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and Engineering, University of Science and Technology Beijing, Beijing 100083, China) Abstract: The smooth surface and single <100> oriented columnar-grained copper rods were prepared by downward continuous unidirectional solidification equipments with reasonable process parameters, then, the copper rods were drawn at ambient temperature (without intermediate heat treatment), which exhibits......
, China) Abstract: The evolution regularity of microstructures and mechanical properties of a forged Fe-based alloy were investigated by optical microstructure, energy spectrum analysis, X-ray diffractrometry and Rockwell hardness testing. The results show that few nucleus of crystal is formed on the forged Fe-based alloy, the grains occur recrystallization and the second phase is composed of Ti......
method after the steel was multiply forged. The mechanical properties of nitro-gen-containing die steel forgings are better than the standard of NADCA #207-2003.关键词:......
mechanism by calculating the Gibbs energy curves of the α and β phases of the Ti64–xMo alloys at 600℃. Bulk forged Ti64–6 Mo alloy exhibited high strength and moderate plasticity after α/β-phase-field......
Trans. Nonferrous Met. Soc. China 29(2019) 569-578 Characterization of residual stresses and microstructural features in an Inconel 718 forged compressor disc Xiao-yan XU1, Xiang-dong MA2, Hong WANG3... of forged compressor disc. X-ray diffraction and neutron diffraction methods were used to measure the residual stress of Inconel 718 forged discs at the surface and in the interior, respectively......
strength of the forged alloy decrease by 33 MPa and 37 MPa, respectively, but the elongation, electrical conductivity and hardness all have increased, and the forged alloys exhibit a ductile fracture. The extruded alloys feature fine and homogeneous, the grains are elongated along extrusion, but some grains of forged alloys are broken, and some grains grow up; and the grain......
明显的由粉末颗粒被拉开所造成的空洞,说明粉末坯在非常短的时间内就达到了非常好的固结状态. 关键词:纯钛;粉末冶金;拉伸性能;锻造;挤压;显微组织 中图分类号:TG146.2 文献标志码:A Mechanical properties of powder compact forged and powder compact extruded... forged titanium and powder compact extruded titanium have very high tensile strength due to α lamella structure and high oxygen content. The fracture surface analysis of the forged titanium and extruded......
2018 Abstract: A cup-shaped component of Mg-4Al-2Ba-2Ca (ABaX422) alloy was forged in the temperature range of 300-500 °C and at speeds in the range of 0.01-10 mm/s with a view to validate... of the above two domains were sound and symmetrical, and had finer grain sizes when being forged in the first domain. However, when being forged in the flow instability regimes, the alloy fractured before......
and mechanical properties are inhomogeneous in direct forged samples. The microstructure of the wall is coarser than that of the base, and the mechanical properties are lower and some defects... properties become more homogeneous. The defects disappear when the feeding amount is 4 mm. The forged wheel hubs could obtain fine and homogeneous microstructure with grain size of 20-30 μm, tensile......
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