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Influence of Nb and Mo contents on phase stability and elastic property of β-type Ti-X alloys YAO Qiang(姚 强), SUN Jian(孙 坚), XING Hui(邢 辉), GUO Wen-yuan(郭文渊) School of Materials Science... approximation. The elastic moduli of the polycrystals for these Ti1-xXx alloys were calculated from the elastic constants of the single crystal by the Voigt-Reuss-Hill averaging method. Based......
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that of the β phase, which is the main secondary phase in Mg-Al base alloys. Furthermore, the enhancement of thermal stability of Mg-Zn-Al based alloys was achieved by small amount of calcium... based alloys, such as AZ91 and AM60, the alloys studied show higher creep properties, which is attributed to the absence of β(Mg17Al12) phase discontinuous precipitation during casting and creep......
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First-Principles Study of Phase Stability and Mechanical Property of Co_3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys () 摘要:The energetics, electronic structure and mechanical property of Co_3(Al,W) precipitates with different ratio of Al to W in Co base alloys were investigated by the method of supercell and augmented plane waves plus local orbitals within......
dilatometry(DIL). The variation of the non-monotonic effects of tungsten content and vacuum conditions on the glass forming ability(GFA) of Fe-based alloys can be drawn in a schematic diagram... dilatometric measurements. Under low and high vacuum conditions, the viscosity and microhardness are improved and the fragility of the Fe-based alloys are decreased by adding tungsten. Key words: glass forming......
of lower content solute on the grain refinement, where w(Cu)<5.65% in Al-Cu alloys for no other phase transition. The Q of melts with high solute content or phase transition is beyond the scope..., DIJK N H, HANSEN T, KATGERMAN L, KEARLEY G J. The role of solute titanium and TiB2 particles in the liquid-solid phase transformation of aluminum alloys [J]. Mater Sci Eng A, 2004, 386: 20-26. [4......
First-principles investigation of mechanical and electronic properties of LaAg5 Laves phase under pressure高恩强1,黄福祥1,陈志谦2,王兰兰1,张照超11. College of Materials Science & Engineering Chongqing University... properties of LaAg5 compound were investigated employing the first-principles method based on the density functional theory. The mechanical results demonstrated that bulk modulus, shear modulus and Young’s......
First-principles investigation of mechanical and electronic properties of LaAg5 Laves phase under pressure高恩强1,黄福祥1,陈志谦2,王兰兰1,张照超11. College of Materials Science & Engineering Chongqing University... properties of LaAg5 compound were investigated employing the first-principles method based on the density functional theory. The mechanical results demonstrated that bulk modulus, shear modulus and Young’s......
Y-Containing Phase in Fe-20Cr-4Al-Y Alloys and Its Effect on Embrittlement李碚,颜玉新,孟广恩,吴双霞,唐凤凰摘 要:<正> In Fe-20Cr-4Al-Y alloys with (0.13~0.73) wt% Y,Y-containing phase was observed.Its Y content andcrystal structure were identical with those Of YFe9 phase basically,and microhardness was 4~5 times higherthan that of α-phase matrix.The phase can......