Abstract The aim of this work is to investigate the influence of the volumetric energy density (EV) on the microstructure, texture and Vickers hardness of Ti-6Al-4V (wt%) processed by laser powder bed fusion (LPBF), both in the as-built and heat-treated conditions. With this goal, Ti-6Al-4V powder was processed using energy densities ranging between 24.2 and 71.4 J/mm3. Analysis by electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) revealed that LPBF processing gives rise to high density of fine α/α′laths, whose size and orientation is highly dependent on EV, as this parameter influences the size and orientation of prior β grains. In particular, at low energy density (EV

中文翻译：

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能量密度对激光粉末床熔制Ti-6Al-4V组织和织构演变的影响

摘要 本工作的目的是研究体积能量密度 (EV) 对激光粉末床融合 (LPBF) 处理的 Ti-6Al-4V (wt%) 的显微组织、织构和维氏硬度的影响。竣工和热处理条件。为实现这一目标，Ti-6Al-4V 粉末使用范围在 24.2 至 71.4 J/mm3 之间的能量密度进行加工。通过电子背散射衍射 (EBSD) 和 X 射线衍射 (XRD) 分析表明，LPBF 处理产生了高密度的精细 α/α' 板条，其尺寸和方向高度依赖于 EV，因为该参数影响尺寸和先验β晶粒的取向。特别是在低能量密度（EV