含有不同尺度微裂纹的铝合金伸长率模型

宋旼; 陈康华; 齐雄伟

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含有不同尺度微裂纹的铝合金伸长率模型
A Model for the Tensile Ductility of Aluminum Alloy with Various-sized Micro-cracks
2007年第1期页码：3-7
纸质出版日期： 2007 ，
DOI：

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[1]宋旼,陈康华,齐雄伟.含有不同尺度微裂纹的铝合金伸长率模型[J].特种铸造及有色合金,2007(01):3-7.

Song Min, Chen Kang hua, Qi Xiongwei. A Model for the Tensile Ductility of Aluminum Alloy with Various-sized Micro-cracks[J]. Special Casting & Nonferrous Alloys, 2007,(1):3-7.
[1]宋旼,陈康华,齐雄伟.含有不同尺度微裂纹的铝合金伸长率模型[J].特种铸造及有色合金,2007(01):3-7. DOI：

Song Min, Chen Kang hua, Qi Xiongwei. A Model for the Tensile Ductility of Aluminum Alloy with Various-sized Micro-cracks[J]. Special Casting & Nonferrous Alloys, 2007,(1):3-7. DOI：

摘要

基于铝合金在变形过程中形成不同尺度的微裂纹

建立了铝合金伸长率与微米级的结晶相及沿晶界分布的亚微米级的弥散相的非线性解析模型

模型的预测与试验值较为符合。借助模型的理论分析

可以定量地得出不同尺度的结晶相

弥散相含量及尺寸对铝合金伸长率的影响。同时

根据模型的解析结果

提出了改善铝合金伸长率的方法。

Abstract

A nonlinear model was developed to describe the relationship between tensile ductility and constituents in micron scale as well as dispersoids in sub-micron scale in aluminum alloy based on the formation of various-sized micro-cracks during deformation.The model prediction agrees well with the experimental data.Effects of the volume fraction and size of the various-sized constituents and dispersoids on tensile ductility of aluminum alloy can be quantitatively analyzed by means of the model.Meanwhile

measures of improving tensile ductility of aluminum alloy were taken based on the simulated results.