Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

THERMODYNAMICS (30 journals)

Showing 1 - 29 of 29 Journals sorted alphabetically
Advances in Heat Transfer     Full-text available via subscription   (Followers: 26)
Applied Thermal Engineering     Hybrid Journal   (Followers: 41)
Araucaria. Revista Iberoamericana de Filosofía, Política y Humanidades     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 9)
Chemical Thermodynamics and Thermal Analysis     Open Access   (Followers: 8)
Condensed Matter Physics     Open Access   (Followers: 2)
Diffusion Foundations     Full-text available via subscription   (Followers: 4)
European Journal of Mechanics - B/Fluids     Hybrid Journal   (Followers: 5)
Experimental Heat Transfer     Hybrid Journal   (Followers: 17)
Experimental Thermal and Fluid Science     Hybrid Journal   (Followers: 34)
Fluids     Open Access   (Followers: 1)
Heat and Mass Transfer     Hybrid Journal   (Followers: 28)
Heat Transfer Engineering     Hybrid Journal   (Followers: 37)
High Temperature     Hybrid Journal   (Followers: 2)
HTM Journal of Heat Treatment and Materials     Full-text available via subscription   (Followers: 3)
International Journal of Thermodynamics     Open Access   (Followers: 11)
International Journal of Thermophysics     Hybrid Journal   (Followers: 7)
Journal of Thermodynamics & Catalysis     Open Access   (Followers: 6)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 4)
Journal of Low Temperature Physics     Hybrid Journal   (Followers: 8)
Journal of Non-Newtonian Fluid Mechanics     Hybrid Journal   (Followers: 16)
Journal of Thermal Science     Hybrid Journal   (Followers: 21)
Journal of Thermal Spray Technology     Hybrid Journal   (Followers: 5)
Journal of Thermodynamics     Open Access   (Followers: 7)
Journal of Thermophysics and Heat Transfer     Hybrid Journal   (Followers: 93)
Low Temperature Physics     Hybrid Journal   (Followers: 6)
Metal Science and Heat Treatment     Hybrid Journal   (Followers: 36)
Quantitative InfraRed Thermography Journal     Hybrid Journal  
Thermophysics and Aeromechanics     Hybrid Journal   (Followers: 6)
Similar Journals
Journal Cover
Metal Science and Heat Treatment
Journal Prestige (SJR): 0.279
Number of Followers: 36  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1573-8973 - ISSN (Online) 0026-0673
Published by Springer-Verlag Homepage  [2468 journals]
  • Effect of Aluminum, Copper and Manganese on the Structure and Properties
           of Cast Irons

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      Abstract: The effect of aluminum, copper and manganese on the structure, mechanical and tribotechnical properties of cast irons is studied. Cast irons of three types (aluminum-alloyed, aluminum- and copper-alloyed, and aluminum-, copper- and manganese-alloyed ones) are obtained by casting into sand-liquid-glass molds. The structure of the iron containing aluminum and copper acquires nanosize particles of phase ε-Cu promoting increase in the hardness and strength of the material. Alloying with aluminum, copper and manganese yields a structure where pearlite is accompanied by microvolumes of martensite and retained austenite. Particles of ε-Cu are detectable both within the colonies of lamellar pearlite and inside martensite crystals. The presence of martensite in the structure of the cast iron raises its wear resistance.
      PubDate: 2024-02-20
       
  • Effect of Ni Addition on the Metallurgical and Mechanical Properties of WC
           – 10Co – 4Cr Laser Cladding Surfaces on Mild Steel

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      Abstract: The effect of laser cladding process technological parameters, as well as of the addition of nickel (5 – 15 wt.%) on the structure and mechanical properties of WC – 10Co – 4Cr laser cladding on mild steel, has been studied. The most effective laser cladding process parameters were determined when applying single-pass clad tracks and tracks with 50% overlap. The microstructure and the phase composition of the coatings were determined using EDS and XRD. The microhardness of the coatings and their erosion wear resistance were measured. The maximum microhardness (3.6 times higher than that of the substrate material) was exhibited by the WC – 10Co – 4Cr coating (without Ni). The WC – 10Co – 4Cr – 5Ni coating (with 5% Ni) exhibited the highest erosion wear resistance as compared to the coatings with 10 and 15% Ni.
      PubDate: 2024-02-20
       
  • Effect of Pressure and Heating Temperature on the Structure and Mechanical
           Properties of Explosion-Welded Aluminum-Niobium Multilayer Composite

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      Abstract: Multilayer composites formed by explosion welding from alternated plates of niobium and aluminum are studied. The samples are subjected to annealing at 700, 800 and 900°C under a load and without load. The structure, the ultimate tensile strength, the impact toughness and the Vickers microhardness of the composites are determined. It is shown that mixed zones represented by nonequilibrium phases, intermetallic particles of NbAl3 and Nb2 Al, and undissolved niobium volumes are formed near “local melting/rapid solidification” interfaces. Increase of the annealing temperature from 700 to 900°C causes growth of the intermetallic inclusions, appearance of cracks in the reaction layer, and considerable worsening of the mechanical properties. The highest ultimate strength (700 MPa) and impact toughness (86 J/cm2 ) are obtained in the samples annealed under pressure at 900 and 800°C, respectively. Annealing at 700°C at a pressure of 30 MPa is shown to be an optimum treatment producing a favorable effect on the strength characteristics and providing a defect-free structure.
      PubDate: 2024-02-20
       
  • High-Resolution Characterization of Subunits in Nanostructured Bainite in
           High-Carbon Silicon Steel

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      Abstract: The microstructure of nanostructured bainite formed by austempering in high-carbon silicon steel is characterized by high resolution electron microscopy. The results show that the bainitic sheaves consist of nanoscale subunits. The found kinds of crystal lattice distortions of each subunit in one bainite lath show clear difference. The latest generated subunit has most distortions. As the subunit grows up, the lattice distortion gradually gets relaxed. This indicates that the subunits form with high phase transformation strain energy, which causes severe lattice distortion. The results provide new experimental evidence on subjects relevant to the understanding of the mechanism of formation of bainitic ferrite.
      PubDate: 2024-02-19
       
  • Hot Deformation Behavior of Duplex Stainless Steel 2205

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      Abstract: The deformation behavior of duplex stainless steel 2205 is investigated by the method of high-temperature tensile and compressive tests using Gleeble 1500. The results of the tensile tests show that the tensile strength gradually decreases with increase in the deformation temperature; in the temperature range from 1020 to 1260°C the reduction of area is more than 60%. The incoordinate deformation of the two-phase tested steel in the range of 1020 – 1080°C leaves 1100 – 1200°C a suitable range for hot deformation. The results of compressive tests at the temperatures from 1100 to 1200°C show that the flow curve has typical features of dynamic recrystallization; with increase of the deformation temperature or decrease of the deformation rate, the peak stress and strain decrease separately; from this the Zener–Hollomon parameter is determined, which reflects the flow property of the tested steel, and an equation is proposed to describe the hot deformation.
      PubDate: 2024-02-19
       
  • Effect of Complex Alloying of the Damping Capacity of Mn – Cu Alloys in
           the Range of Amplitude-Independent Damping

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      Abstract: The effect of complex alloying with iron, nickel, aluminum, zinc, zirconium and titanium in an amount of 0.5 – 1.2% each on the damping capacity of binary alloys Mn – 50% Cu and Mn – 40% Cu in the range of amplitude-independent damping is studied after aging at 643 K for 0.5 – 40 h and natural aging for 7 months. It is shown that alloying of the Mn – Cu alloys in cast condition may either raise their damping capacity or leave it invariable. With increase of the aging time, the values of the frequency of resonance vibrations of specimens of the Mn – Cu alloys fall to a minimum and then grow to a maximum level. The high damping capacity of the multicomponent Mn – 45.6% Cu – 1% Fe – 1% Ni – 1% Zn – 0.9% Zr – 0.5% Ti alloy (ψ = 2.9%) and of the Mn – 35.8% Cu – 1%Fe – 1%Ni – 1%Al – 1.2% Zr alloy (ψ = 3.5%) cast and aged for 40 h at 643 K does not decrease after 7 months of natural aging at 293 K.
      PubDate: 2024-02-19
       
  • Transformation of Niobium Carbide in Heat-Resistant Alloys Based on Fe –
           25Cr – 35Ni at 900°C and 1150°C

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      Abstract: Cross sections prepared using a focused ion beam are used for a transmission electron microscopy study of the microstructure and elemental composition of the intermetallic phases formed after long-term holding a 900 and 1150°C at the boundaries of dispersed particles of niobium carbide in a heat-resistant alloy of type HP40NbTi. Formation of a well-known G-phase is detected at 900°C. When the temperature is raised to 1150°C, an fcc intermetallic phase with parameter a = 1.084 nm (space group Fd3m) is detected. The elemental composition of the high-temperature intermetallic compound and participation of atmospheric nitrogen in its formation are established.
      PubDate: 2024-02-19
       
  • Raising the Wear Resistance of Chromium-Nickel Steel Surface-Hardened with
           Titanium Carbide Particles

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      Abstract: Electron microscopy and x-ray diffraction analysis are used to study the structure of coatings deposited on steel 12Kh18N9T by non-vacuum electron beam cladding of TiC and Ti + C particles. Wear tests of the coated samples are performed under the conditions of friction against fixed abrasive particles and hydroabrasive impact. It is shown that cladding of the Ti + C powder mixture produces composite titanium carbides with dominantly dendritic structure. The reinforcement of the surface layers of steel 12Kh18N9T (AISI 321) with TiC particles doubles its wear resistance.
      PubDate: 2024-02-19
       
  • Review of Synthesis Methods, Microstructure and Properties of WC –
           Co-Based Hard Alloys

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      Abstract: Advanced recent and traditional processes for synthesizing hard alloys based on WC – Co are reviewed. The mechanisms of grain compaction during sintering and the efficiencies of the grain growth inhibitors for repeated precipitation of WC grains are considered. The methods of pressure sintering and rapid sintering are studied. Advantages and disadvantages of different methods are described.
      PubDate: 2024-02-19
       
  • Effect of Tempering Temperature on Mechanical and Corrosion Properties of
           Modified Martensitic Stainless Steel CA6NM

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      Abstract: The effect of tempering temperature on the mechanical and corrosion properties of modified martensitic steel CA6NM is studied. Mechanical characteristics are determined in tensile and hardness tests, and corrosion properties are investigated using potentiodynamic and cyclic polarization in an artificial brine solution. The relationship between the microstructure and the mechanical and corrosion properties of the steel in the heat-treated state is revealed. It is shown that the best combination of mechanical and corrosion properties is achieved by tempering at a temperature of 600°C.
      PubDate: 2024-02-19
       
  • Effect of Intermittent Water Spray Quenching on the Wear Resistance of
           Forged Grinding Balls Made of Steel 70SiMnCr

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      Abstract: The efficiency of replacing traditional quenching in a bath by spray quenching to manufacture grinding balls ∅120 mm made of 70SiMnCr steel to reduce stresses and control the phase composition is investigated. A process of forging grinding balls with the use of water spray cooling is suggested, which ensures bainite transformation under isothermal conditions and formation of the specified structure. The W70A45W20 process, implemented at 200°C for 4.5 h, yields balls with a final volume hardness of 56 HRC and a toughness of 73 J. After this mode of heat treatment, the steel balls have a high wear resistance, and the main mechanism of their surface wear is plastic deformation and micro-cutting.
      PubDate: 2024-02-19
       
  • A Study of Decomposition of Supercooled Austenite in High-Strength
           Medium-Carbon Complexly Alloyed Cold-Resistant Steels

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      Abstract: Special features of structural and phase transformations, position of critical points, quantitative parameters of the structure, and hardness under continuous transformation of supercooled austenite in steels 30KhNMFRA, 30KhGNMFRA and 30KhN3MFRA are determined. Thermokinetic diagrams of decomposition of supercooled austenite in the steels are plotted using a Gleeble 3500 research complex. Recommendations are developed for selection of chemical composition and cooling rate for billets in order to provide a high strength and enough impact toughness of the steels after quenching and low tempering. The results may be used for development of high-strength cold-resistant steels and modes of their heat hardening.
      PubDate: 2024-02-19
       
  • Effect of Gas Atmosphere in Aluminobarothermal Synthesis on the Structure
           of Metal Matrix Composites Based on Fe – Cr – Mn – Mo Alloy

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      Abstract: The structures of metal matrix composites based on the Fe – Cr – Mn – Mo system and fabricated by an aluminobarothermal process with the use of argon or nitrogen as the gas atmosphere in the reactor are compared. Chemical analysis for the content of the metals, nitrogen and oxygen in the samples is performed. The structure is studied in different conditions. The total hardness of the samples and the microhardness of their matrixes are determined. It is shown that the morphology of the reinforcing nonmetallic particles depends on the type of the gas atmosphere in the reactor during the synthesis and remains unchanged after a 2-h hold at 1250°C and water cooling. The determined coefficients of recovery of nitrogen from the nitrided chromium and the data of the diffraction analysis are used to show that the aluminobarothermal synthesis under nitrogen pressure is an optimum variant.
      PubDate: 2024-02-19
       
  • Study and Characterization of Sigma Phase in Duplex Stainless Steel 2205
           (03Kh22N6M2)

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      Abstract: A study of sigma phase formation, its characterization, and its effect on the properties of duplex stainless steel 2205 are presented. The steel has been heat treated according to the mode: heating to a temperature of 850°C, holding during 6 h and cooling in various media, i.e., furnace, air, and water. The optical metallographic methods reveal sigma phases within the ferrite region of the steel microstructure after all the heat treatments; a slightly elevated amount of the phase is detected after cooling with the furnace. Some fine carbides and nitrides are encountered along with the sigma phase. The SEM and EDS characterization confirms that the chemistry of the sigma phase is Fe – 12.2Cr – 2.1Mo. The hardness of the water-quenched steel is 336 HB, which is 47% higher than its hardness before the heat treatment.
      PubDate: 2024-02-17
       
  • A Study of Gas-Saturated Layer After Oxidation of Alloy Ti6242S at 500
           – 800°C

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      Abstract: Oxidation of alloy Ti6242S in the temperature range of 500 – 800°C in an air atmosphere is investigated by x-ray diffraction analysis, nuclear microanalysis, optical and electron microscopy. The effect of the content of oxygen at the oxide/metal interface on the lattice constants of the phases is assessed using XRD. It is shown that the concentration of oxygen in the gas-saturated layer depends on the temperature and the time of the annealing. The results obtained are expected to raise the reliability of prediction of the oxidation behavior of the alloy.
      PubDate: 2024-02-17
       
  • Influence of Thermal Aging on Tensile-Plastic Flow Behavior of Indian
           Steel RAFM (F82H)

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      Abstract: Influence of thermal aging (873 K, 5000 h) on microstructure and tensile-plastic flow behavior of normalized and tempered (N&T) 1.4W – 0.06Ta IN-RAFM steel is investigated. The Ludwigson and Voce equations are used to elucidate the tensile-plastic flow response of the IN-RAFM steel over a wide temperature range of 298 – 873 K. Both the yield strength and the tensile strength are fitted by the initial stress and saturation stress, respectively, as per the Voce constitutive equation. The strain hardening exponent increases under aging due to the increase in the work hardening capability of the aged steel, while the strain hardening coefficient decreases with the aging. TEM specimens extracted from a tensile tested sample are used to correlate the formation and the movement of dislocation debris in the structure of both N&T and thermally aged steel. The absolute value of nv decreases due to the aging exhibiting a two-stage behavior. The acceleration of the recovery process is lower at the high temperature in the steel subjected to thermal aging as compared to the N&T steel. The Voce relation is used successfully to predict the yield stress and the ultimate tensile strength of both thermally aged and N&T IN-RAFM steel at different temperatures.
      PubDate: 2024-02-17
       
  • Effect of Natural Aging on the Structure and Properties of Steel 30KhGSA
           Hardened by Quenching and Partitioning

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      Abstract: Steel 30KhGSA is studied after a quenching and partitioning (Q&P) heat treatment and after traditional quenching. Structural and x-ray analyses are performed and mechanical properties are determined. The Q&P treatment produces a martensite-austenite structure with 10 vol.% retained austenite. The use of Q&P instead of the traditional quenching elevates the impact toughness by a factor of 3 and the resistance to fatigue crack growth by a factor of 2. A long hold at room temperature (for more than a month) reduces the content of retained austenite in the Q&P-steel to 7.5 vol.% and lowers its impact toughness and crack resistance by a factor of 1.5 as compared to the state right after the hardening.
      PubDate: 2024-02-17
       
  • Complex Deformation–Ion-Plasma Treatment of Steel 08Kh18N10T-Sh

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      Abstract: The structure and properties of the surface and of the core of steel 08Kh18N10T-Sh subjected to radial forging and subsequent saturation by the method of ion-plasma nitriding are studied. It is shown that the complex deformation–ion-plasma treatment accelerates the nitriding process and provides a high level of strength of the surface and of the core of steel 08Kh18N10T-Sh. The lower the saturation temperature, the shorter the hold time and the higher the degree of the deformation of the steel, the more deformed α-phase capable to accelerate the saturation process is preserved in the structure.
      PubDate: 2024-02-17
       
  • Diffusion Kinetics and Characterization of Fe2B Coatings Grown
           Thermochemically on Steel ASTM A709

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      Abstract: The study is devoted to pack-powder boriding of ASTM A709 steel in a powder mixture containing boron carbide, potassium fluoroborate and silicon carbide. This surface hardening process is conducted between 1123 and 1273 K for from 2 to 8 h. The formed diiron boride layers are studied by different techniques (scanning electron microscopy, x-ray diffraction (XRD) analysis, glow discharge optical emission spectroscopy (GDOES), Vickers microhardness testing, surface profilometry, Rockwell-C indentation cohesion and pin-on-disc tests). Kinetically, an integral-method-based approach is applied to calculate the boron diffusivities in Fe2B. The activation energy of the process is deduced and compared to reported data. The same model is ultimately verified by comparing the empirical values of the thickness of the Fe2B layers obtained at 1223 K and 1273 K for 9 h and the predicted values.
      PubDate: 2024-02-17
       
  • Effect of Molybdenum Electron-Beam Cladding on the Heat and Wear
           Resistances of Surface Layers of Chromium-Nickel Austenitic Steel
           12Kh18N9T

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      Abstract: The structure and properties of surface layers of billets from steel 12Kh18N9T formed by vacuum electron beam surfacing of powder mixtures are studied. The main alloying component is molybdenum in an amount of 40 wt.%. The structural and phase studies are made using optical and electron microscopes and an x-ray diffractometer. The microhardness and the wear resistance of the deposited layers are determined. The structure of the hardened surface layer is shown to contain phases Mo0.08Fe0.92, Mo0.9Fe0.1, Mo0.1Fe0.9, α-Fe and γ-Fe. The alloying with molybdenum raises the wear resistance of the steel by a factor of 1.8 and the heat resistance by a factor of 6.7.
      PubDate: 2024-02-17
       
 
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  Subjects -> PHYSICS (Total: 857 journals)
    - ELECTRICITY AND MAGNETISM (10 journals)
    - MECHANICS (22 journals)
    - NUCLEAR PHYSICS (53 journals)
    - OPTICS (92 journals)
    - PHYSICS (625 journals)
    - SOUND (25 journals)
    - THERMODYNAMICS (30 journals)

THERMODYNAMICS (30 journals)

Showing 1 - 29 of 29 Journals sorted alphabetically
Advances in Heat Transfer     Full-text available via subscription   (Followers: 26)
Applied Thermal Engineering     Hybrid Journal   (Followers: 41)
Araucaria. Revista Iberoamericana de Filosofía, Política y Humanidades     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 9)
Chemical Thermodynamics and Thermal Analysis     Open Access   (Followers: 8)
Condensed Matter Physics     Open Access   (Followers: 2)
Diffusion Foundations     Full-text available via subscription   (Followers: 4)
European Journal of Mechanics - B/Fluids     Hybrid Journal   (Followers: 5)
Experimental Heat Transfer     Hybrid Journal   (Followers: 17)
Experimental Thermal and Fluid Science     Hybrid Journal   (Followers: 34)
Fluids     Open Access   (Followers: 1)
Heat and Mass Transfer     Hybrid Journal   (Followers: 28)
Heat Transfer Engineering     Hybrid Journal   (Followers: 37)
High Temperature     Hybrid Journal   (Followers: 2)
HTM Journal of Heat Treatment and Materials     Full-text available via subscription   (Followers: 3)
International Journal of Thermodynamics     Open Access   (Followers: 11)
International Journal of Thermophysics     Hybrid Journal   (Followers: 7)
Journal of Thermodynamics & Catalysis     Open Access   (Followers: 6)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 4)
Journal of Low Temperature Physics     Hybrid Journal   (Followers: 8)
Journal of Non-Newtonian Fluid Mechanics     Hybrid Journal   (Followers: 16)
Journal of Thermal Science     Hybrid Journal   (Followers: 21)
Journal of Thermal Spray Technology     Hybrid Journal   (Followers: 5)
Journal of Thermodynamics     Open Access   (Followers: 7)
Journal of Thermophysics and Heat Transfer     Hybrid Journal   (Followers: 93)
Low Temperature Physics     Hybrid Journal   (Followers: 6)
Metal Science and Heat Treatment     Hybrid Journal   (Followers: 36)
Quantitative InfraRed Thermography Journal     Hybrid Journal  
Thermophysics and Aeromechanics     Hybrid Journal   (Followers: 6)
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JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 44.192.20.240
 
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