Extra Strain Hardening in High Pressure Die Casting Mg-Al-RE Alloy

被引：0
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作者：
Jie Wei
Qudong Wang
Dongdi Yin
Li Zhang
Hao Zhou
Bing Ye
Haiyan Jiang
Wenjiang Ding
机构：
[1] Shanghai Jiao Tong University,National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, School of Materials Science and Engineering
[2] Southwest Jiaotong University,Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering
[3] Nanjing University of Science and Technology,Nano and Heterogeneous Materials Center, School of Materials Science and Engineering
来源：
Metallurgical and Materials Transactions A | 2020年 / 51卷
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摘要：
High pressure die casting Mg-Al-RE alloy has an intrinsic and macroscopic gradient structure regarding the grain size and the area fraction of second phase along the depth direction. Such gradient structure exhibits incompatible but continuous mechanical properties in regions of different depth from surface during uniaxial tension. An extra strain hardening and a higher strength are thus produced. The unique mechanical behaviors originate from the generation and accumulation of geometrically necessary dislocations promoted by the strain gradient.
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页码：1487 / 1492
页数：5
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