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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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TiAl单晶中〈011]超点阵位错滑移的临界分切应力（CRSS）与晶体取向的关系
, PP. 337-342
Keywords: γ－TiAl单晶,临界分切应力
Abstract:
γ－ＴｉＡｌ单晶中,〈０１１」超点阵位错的运动方向同晶体取向有关,当沿极射投影图００１－１１０－０１０单位三角形的００１－１１１－０２１区域中的取向变形时,ＳＩＳＦ偏位错为领先位错；而沿三角形中其科区域中的取向变形时,ＡＰＢ偏位错为领域先位错.在反常温度区域中,前者的ＣＲＳＳ较高,形变的热激活焓也较高,〈０１１」超点阵位错的脱钉过程更为困难,造成ＣＲＳＳ反常上升的速率较快.
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