北京航空航天大学学报 ›› 2002, Vol. 28 ›› Issue (5): 519-523.

• 论文 • 上一篇    下一篇

高强铝合金穿晶剪切断裂研究

陈昌麒   

  1. 北京航空航天大学 材料科学与工程系
  • 收稿日期:2002-07-25 出版日期:2002-05-31 发布日期:2010-09-25
  • 作者简介:陈昌麒(1932-),男,浙江奉化人,教授,100083,北京.

Transgranular Shear Fraefure of High Strength Aluminum Alloys

CHEN Chang-qi   

  1. Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering
  • Received:2002-07-25 Online:2002-05-31 Published:2010-09-25

摘要: 为了澄清穿晶剪切模式的产生条件,对各种工业铝合金和单晶体进行了大量的实验研究和理论分析.变形的平面应变状态(外在或内在的)和应变硬化率趋近于0是产生剪切应变局部化的基本条件.剪切应变局部化导致剪开,即为穿晶剪切断裂.对作者原来提出的模型进行改进.

Abstract: In order to reveal the conditions for shear failure of high strength aluminum alloys, experimental tests and theoretical analysis were performed on various aluminum alloys and single crystals. It is concluded that plane strain deformation mode (external or internal) and very low strain hardening rate are two fundamental conditions for shear deformation localization to happen. Shear localization resulted in shear fracture. The author's previous proposed micro-mechanical model was revised.

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