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TiAl基合金微观变形及显微结构对屈服应力的影响
引用本文:杨晓华,梁伟.TiAl基合金微观变形及显微结构对屈服应力的影响[J].有色金属,2000,52(3):74-75.
作者姓名:杨晓华  梁伟
作者单位:[1]福州大学材料学院 [2]太原理工大学测试中心
摘    要:分析了全层片多晶体TiAL基合金的几种可能的微观变形模式及显微结构对屈服应力的影响。在此基础上推导出全层片多晶体TiAl基合金室温下应力和晶粒 d以及层片间距的关系,可表示为:σr=σ0+KyL^-1/2+K3c.dc^-1/2。其中晶凿尺寸对屈服应力的影响比层片间距显得多。

关 键 词:TiAl基合金  屈服应力  晶粒尺寸  微观变形

MICRO DEFORMATION MODES AND EFFECT OF MICROSTRUCTURE ON YIELD STRESS OF FULLY LAMELLAE POLYCRYSTALLINE TiAL-BASE ALLOY
YANG Xiaohua,LIANG Wei,YANG Dezhuang.MICRO DEFORMATION MODES AND EFFECT OF MICROSTRUCTURE ON YIELD STRESS OF FULLY LAMELLAE POLYCRYSTALLINE TiAL-BASE ALLOY[J].Nonferrous Metals,2000,52(3):74-75.
Authors:YANG Xiaohua  LIANG Wei  YANG Dezhuang
Abstract:The micro deformation modes and the effect of microstructure on yield stress of fully lamellae polycpetalline TiAl-base alloy are studied in this paper. Based on the analyses above the relationship between the yield stress and colony size d and lamellar spacing A is derived as follows The colony size shows a much stronger effect on yield stess than the lamellar spacing does.
Keywords:TiAl-base alloy  yield stress  grain size
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