Grain morphology control and texture characterization of laser solid formed Ti6Al2Sn2Zr3Mo1.5Cr2Nb titanium alloy
作者: Q. ZhangJ. ChenX. LinH. TanW.D. Huang
作者单位: 1State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, China
刊名: Journal of Materials Processing Tech., 2016, Vol.238 , pp.202-211
来源数据库: Elsevier Journal
DOI: 10.1016/j.jmatprotec.2016.07.011
关键词: Additive manufacturingSolidification microstructureGrain morphology controlTexture characterizationTitanium alloy
原始语种摘要: Abstract(#br)To better understand β grain morphology control during the laser additive manufacturing of titanium alloys, a damage tolerance α+β titanium alloy, Ti6Al2Sn2Zr3Mo1.5Cr2Nb alloy, was built by laser solid forming (LSF) with different process strategies. The corresponding microstructure and macrotexture were investigated using optical microscopy and X-ray diffraction. Near equiaxed grains, columnar grains (both vertical and inclined) and mixed grain morphology were obtained by suitable control of the processing parameters. The surviving captured powders in the molten pool could act as a substrate core for equiaxed dendritic growth. A lower laser energy density and smaller remelt depth are critical for the formation of equiaxed grains. As expected, near equiaxed grains are more...
全文获取路径: Elsevier  (合作)
影响因子:1.953 (2012)