TC4钛合金激光表面重熔层内拉伸变形$\{10\bar{1}2\}$孪晶形成机制及马氏体变体选择规律

杨朋飞, 孙磊, 孙奇, 杨志远, 赵元, 高英, 张嘉振

Formation Mechanism of $\{10\bar{1}2\}$ Twins and Selection Rule of Martensitic Variants During Tensile Deformation in TC4 Titanium Alloy Laser Surface Remelting Layer

YANG Pengfei, SUN Lei, SUN Qi, YANG Zhiyuan, ZHAO Yuan, GAO Ying, ZHANG Jiazhen

表5 WQ和WQ-LSR试样变体α/α晶界长度占比统计

Table 5 α/α grain boundary length fractions of variants in WQ and WQ-LSR samples

α/α boundary Rotation angle / (°) Frequency / % WQ WQ-LSR Type 1 10.53 1.9 1.3 Type 2 60 33.6 21.6 Type 3 60.83 6.8 4.6 Type 4 63.26 47.0 65.1 Type 5 90 10.6 7.4