,一个典型的人体植入材料应用程序,它可以用作骨板移植手术患者治疗。b的分布和形态α-hcp Ti和Ti-Moβ-bcc Ti在不同地区的样本由激光固体形成(a) P1-top;(b) P4中间;(c) P7底部区域;(d)相组成的统计数据。激光立体成形Ti-Mo合金样品有一个α+β利用结构。样品的α相含量减少从上到下,和样品的β相逐渐增加从上到下,显示一个典型的梯度结构。c、分布和形态α-hcp Ti和β-bcc Ti在不同地区的样本由激光热处理Ti-Mo固体形成(a) P1-top;(b) P4中间;(c) P7底部区域; (d) phase composition statistics. The structure of the heat-treated Ti-Mo alloy sample from the top to the bottom is very uniform, and the structure is almost α mainly α. This shows that after the triple cycle heat treatment, the uniformity of the sample has been greatly improved. This transformation of the structure is due to the triple-cycle heat treatment process and the long holding time, and the non-equilibrium metastable β phase transforms into the equilibrium α phase, so that the structure from the top to the bottom of the sample tends to be thermodynamically stable. d, The compressive strain-stress curve of the sample prepared by laser three-dimensional forming after processing (a, b) and heat treatment (c, d). The heat-treated Ti-Mo alloy has higher strength and toughness than the deposited alloy. In addition, compared with the deposited samples, the heat-treated samples exhibited more uniform mechanical properties in terms of strength, ductility and fracture properties. Credit: Nan Kang, Kai Wu, Jin Kang, Jiacong Li, Xin Lin and Weidong Huang