粉末高温合金FGH4096的疲劳小裂纹扩展行为
杨秦政, 杨晓光, 黄渭清, 石多奇

Propagation Behaviors of Small Cracks in Powder Metallurgy Nickel-Based Superalloy FGH4096
YANG Qinzheng, YANG Xiaoguang, HUANG Weiqing, SHI Duoqi
图10 计算M因子时晶界两侧滑移系的2种情况示意图
Fig.10 Schematics of two situations of the slip systems on both sides of the grain boundary when calculating M factor (Incoming slip plane—the slip plane in current grain, out-going slip plane—the slip plane in the grain in front of the grain boundary, nin—the normal direction of incoming slip plane, nout—the normal direction of out-going slip plane, n111, n1¯11, n11¯1, n1¯1¯1—the normal directions of (111), (1¯11), (11¯1), and (1¯1¯1) slip planes)
(a) the slip planes on both sides of the grain boundary are identified
(b) the slip plane in front of the grain boundary is uncertain, all 4 octahedral slip planes should be considered