High Temperature Strain of Metals and Alloys Part 6 doc
High Temperature Strain of Metals and Alloys Part 6 doc
... preliminary decreased value of λ and increased value of D lead to the strain rate decreasing when the applied stress is relatively low. High Temperature Strain of Metals and Alloys, Valim Levitin (Author)Copyrightc ... 20 06 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimISBN: 3-527-313389-983 6 High- temperature Deformation of Superalloys 6. 1γPhase in SuperalloysThe high- temperature strengthrequirementsof ... representative curves of high- temperature tests fortwo superalloys are shown in Figs. 6. 4 and 6. 5.For superalloys it is often preferred to measure the time truntil a ruptureoccurs instead of determining...
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High Temperature Strain of Metals and Alloys Part 8 docx
... increase1 06 6 High- temperature Deformation of SuperalloysFig. 6. 20 Creep curves in C2 36 superalloy at 1073K. B, stress 160 MPa; C, stress 200MPa. Data from Ref. [37]. 6. 8The Prediction of Properties ... 108 6 High- temperature Deformation of SuperalloysFig. 6. 21 Predicted and actual relation between creeprupture stress for IN939 superalloy and its rupture life, tr. Temperature of tests ... orientations of the ZhS26VI superalloy singlecrystals and results of creep tests at T = 1248K and σ = 2 26 MPa.Number ∆θ[001]∆θ[011]∆θ[111]Rupture life, h1 42 .6 8.8 26. 5 58.02 23 .6 20.4 38.1 64 .03...
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High Temperature Strain of Metals and Alloys Part 11 docx
... 1.0VC 263 20.0 0.5 2.2 5.8 – 20.0 – – – 0.7Fe 58CMSX-2 8.0 5 .6 1.0 0 .6 8.0 5.0 6. 0 – – – 57CMSX-3 7.9 5 .6 1.0 0.5 8.0 4 .6 6.0 – – 0.1Hf 43CMSX-4 6. 2 5 .6 1.0 0 .6 6.5 9.4 6. 4 – 2.8 0.1Hf 46 CMSX -6 ... minimum strain rate of niobium and molybdenum is dependent ex-ponentially on the applied stress at high temperatures.The mean value of the activation energy of the high- temperature strain forniobium ... contains 44Nb–35Ti–6Al–5Cr–8V–1W–0.5Mo–0.3Hf. The microstructure of extruded and recrystallized material consists of a solid solution and of particles of titanium carbide, TiC. The particle sizesare...
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High Temperature Strain of Metals and Alloys Part 12 docx
... 1 965 .2. D. McLean, The physics of high temperature creep in metals Rep. Progr.Phys. 1 966 , 29,1.3. A.J. Kennedy, Processes of Creep and Fatigue in Metals, Oliver & Boyd,Edinburgh, 1 967 .4. ... 38– stability 58 62 superalloys– composition 129, 163 – equations of strain rate 95–100,137–140– physical mechanism of strain 96 98– prediction of properties 1 06 108– trends of development ... 150– nickel 63 – niobium 145density of dislocations– differential equation 49–51, 77,78 High Temperature Strain of Metals and Alloys, Valim Levitin (Author)Copyrightc 20 06 WILEY-VCH Verlag...
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High Temperature Strain of Metals and Alloys Part 1 ppt
... Republic of GermanyPrinted on acid-free paperISBN-13: 978-3-527-31338-9ISBN-10: 3-527-31338-9Valim Levitin High Temperature Strain of Metals and Alloys High Temperature Strain of Metals and Alloys, ... latticeparameters of thematrix andof the hardeningphase.The subject of the last chapter is the peculiarities of the strain behavior of refractory metals. A detailed review of all aspects of the problem ... Characteristics of Strain of Metallic Materials at High TemperaturesThe deformation of a metal specimen begins with the application of a load.There are two kinds of high- temperature strain, namely,...
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High Temperature Strain of Metals and Alloys Part 2 pptx
... at high temperatures.Pure metals, solid solutions and nickel-based superalloys have been stud-ied. High Temperature Strain of Metals and Alloys, Valim Levitin (Author)Copyrightc 20 06 WILEY-VCH ... Characteristics of Strain of Metallic Materials at High Temperatures 6. The various directions of research are somewhat separated from eachother.7. The physical nature of the creep deformation behavior of ... investiga-tions of metals and alloys directly during high- temperature deformation. Themethod of measurement of the irradiation intensities, which are diffractedby separate crystallites of the investigated...
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High Temperature Strain of Metals and Alloys Part 3 pdf
... 2.57 .6 28.4 1.1 3.42.1 7.8 1 .6 2.20 .60 164 5 2 .6 9.8 1.3 2.73.1 11.8 1.1 3.25.3 24.5 1.9 3 .6 0.50 10 96 6.3 29.4 1.5 4.17.4 34.3 0.8 4.42 .6 12.8 2.2 4.3V 0.55 12 06 3.7 17.2 1 .6 4.54.2 19 .6 ... 24.9 1 .6 873 68 .7 5.7 1370 29.4 3.1Ni 98.1 9.5 Nb 35.3 3.81023 9.8 1.3 1508 17.2 2.940.0 6. 3 28.4 5.3Cu 67 8 8.8 2.2 V 10 96 29.4 1 .6 20 .6 9 .6 34.3 1.4 26 3 Structural Parameters in High- Temperature ... 55 ± 3 56 5 85140.0 50 ± 348± 3 21150.0 63 ± 66 7± 7 60 Ni 873 58.0 58 ± 454± 5 12572.0 58 ± 4 46 5 7510.0 54 ± 565 ± 5 96 1073 14.0 45 ± 348± 4 12920.0 38 ± 345± 7 85873 25.0 64 ± 563 ± 5...
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High Temperature Strain of Metals and Alloys Part 4 ppsx
... 7 .6 11.5873 70 54 0.9 2.8 1.01 36 33 13.9 8.2 13.0Ni+9.5W 873 138 41 5 .6 12.0 7.8170 33 17 .6 8 .6 26. 01023 50 46 1 .6 6.0 1.890 32 7 .6 17.0 10.8Comparison of the temperature dependence of ... work, dA, and facilitates the generationFig. 4.3 Scheme of energetic barriers for the motion of thescrew dislocation with vacancy-absorbing jogs. High Temperature Strain of Metals and Alloys, ... values of D are of the order of 0.7–2.0 µm, the values of η are of the order of 2.9 6. 0 mrad.The substructure is formed inside crystallites during the primary stage of creep. The value of D decreases...
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High Temperature Strain of Metals and Alloys Part 5 pdf
... 2πZ)−µb2πλX(4.22) High Temperature Strain of Metals and Alloys, Valim Levitin (Author)Copyrightc 20 06 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimISBN: 3-527-313389-9 67 5Simulation of the Evolution of ... adequate understanding of dislocation processes in these ranges of temperature and stress is of great practical importance. Most heat-resistant metals, steels and alloys operate at temperatures ... stress is higher thanabout 2 × 10−3µ, the sub-boundaries then break up. 62 4 Physical Mechanism of Strain at High TemperaturesThe condition of the stability of the boundary during strain is1Γ>τcreep.Here...
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High Temperature Strain of Metals and Alloys Part 7 pot
... particlesin the EI 867 alloy. 60 000.88 6 High- temperature Deformation of Superalloys 6. 2Changes in the Matrix of Alloys during Strain The specimens of industrial superalloys (see Table 2.1) were ... because we have used the results of measurements of the particle sizes and the data of the strain rate tests. 6. 3 Interaction of Dislocations and Particles 93particles cannot be obstacles for ... ln[f(c)N2] (6. 16) Thus, the logarithm of the ratio of the dislocation densities is given bylnN2N1=A1− A2kT (6. 17)98 6 High- temperature Deformation of Superalloysbranches of the double...
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