| MB2/SiC复合材料高应变速率超塑性及空洞行为 |
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| 引用本文： | 陈培生,孙扬善,隽海昌,蒋建清,马爱斌.MB2/SiC复合材料高应变速率超塑性及空洞行为[J].东南大学学报(自然科学版),2000,30(2):106-110. |
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| 作者姓名： | 陈培生 孙扬善 隽海昌 蒋建清 马爱斌 |
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| 作者单位： | 1. 南京航空航天大学,南京,210016
2. 东南大学材料科学与工程系,南京,210096 |
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| 基金项目： | 国家自然科学基金资助项目! (5 95 71 0 0 4) |
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| 摘 要： | 测试了MB2/10%SiC复合材料的超塑性，并对不同应变量拉伸试样轴剖面上的空洞进行了观察。结果表明该复合材料呈现出高温高应变速率超塑性。超塑性变形过程中形成大量的空洞，空洞在颗粒／基体界面上形核，其生长服从指数定律。
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| 关 键 词： | MB2／SiC 镁 复合材料 超塑性 空洞 应变速率 |
High Strain Rate Superplasticity and Cavity Behavior in MB2/SiC Magnesium Matrix Composites |
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| Chen Peisheng,Sun Yangshan,Jun Haichang,Jiang Jianqing,Ma Aibin.High Strain Rate Superplasticity and Cavity Behavior in MB2/SiC Magnesium Matrix Composites[J].Journal of Southeast University(Natural Science Edition),2000,30(2):106-110. |
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| Authors: | Chen Peisheng Sun Yangshan Jun Haichang Jiang Jianqing Ma Aibin |
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| Institution: | Chen Peisheng;
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| Abstract: | Superplasticity of MB2/10%SiC magnesium matrix composites was investigated. Fracture surface of superplasticity deformed samples at different amount of strain was also observed. Results show that this composite has the characteristic of high strain rate superplasticity. Large amount of cavity has formed during the superplasticity deformation. Cavity nucleated at the interface of particulate and matrix and its growth rate obey the exponential law. |
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| Keywords: | magnesium composite superplasticity cavity |
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