TC4钛合金循环变形微观组织演化与滑移机制

吴帆, 刘华辉, 边文珊, 蔡竣宇, 金士杰, 罗忠兵

Microstructural Evolution and Slip Mechanisms in TC4 Titanium Alloy During Cyclic Deformation

WU Fan, LIU Huahui, BIAN Wenshan, CAI Junyu, JIN Shijie, LUO Zhongbing

图4 不同循环周次TC4合金LSCM表面形貌、EBSD晶粒取向分布反极图及局部取向差(KAM)结果

Fig.4 Microstructural evolutions of TC4 alloy at 0th cyc (a, e, i), 100th cyc (b, f, j), 500th cyc (c, g, k), and 5000th cyc (d, h, l) (a-d) LSCM surface morphologies (PSB—persistent slip band) (e-h) inverse pole figure (IPF) maps, with the MTRs (Zone I) and a reference small grain (Zone II) of identical orientation (MTR—microtextured region) (i-l) kernel average misorientation (KAM) maps