| 工业态AZ31镁合金的超塑性变形行为 |
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| 引用本文： | 刘满平,马春江,王渠东,吴国华,朱燕萍,丁文江. 工业态AZ31镁合金的超塑性变形行为[J]. 中国有色金属学报, 2002, 12(4): 797-801 |
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| 作者姓名： | 刘满平 马春江 王渠东 吴国华 朱燕萍 丁文江 |
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| 作者单位： | 上海交通大学,轻合金精密成型国家工程研究中心,上海,200030 |
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| 基金项目： | 教育部科学技术重大研究资助项目(00-013) |
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| 摘 要： | 研究了工业态AZ31镁合金在温度 6 2 3～ 72 3K和应变速率 1× 10 -5～ 1× 10 -3 s-1范围内的超塑性变形行为。结果表明 ,工业态AZ31镁合金表现出良好的超塑性 ,其最高断裂延伸率达到 314%,应变速率敏感指数达 0 .4。显微组织观察和断口分析表明 ,工业态AZ31镁合金超塑变形主要由晶界滑动机制所控制 ,同时 ,动态再结晶也是合金超塑变形的一种协同机制。
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| 关 键 词： | 超塑性 AZ31镁合金 晶界滑动 动态再结晶 |
| 文章编号： | 1004-0609(2002)04-0797-05 |
| 修稿时间： | 2001-08-17 |
Superplastic deformation behavior of commercial magnesium alloy AZ31 |
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| LIU Man-ping,MA Chun-jiang,WANG Qu-dong,WU Guo-hua,ZHU Yan-ping,DING Wen-jiang. Superplastic deformation behavior of commercial magnesium alloy AZ31[J]. The Chinese Journal of Nonferrous Metals, 2002, 12(4): 797-801 |
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| Authors: | LIU Man-ping MA Chun-jiang WANG Qu-dong WU Guo-hua ZHU Yan-ping DING Wen-jiang |
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| Abstract: | Superplastic behavior of a commercial AZ31 magnesium alloy is investigated at temperatures ranging from 623 to 723 K and strain rates ranging from 10 -5 to 10 -3?s -1. The results showed that the alloy exhibits excellent superplasticity, and the maximum elongation-to-failure reaches 314%. The alloy also shows a high strain rate sensitivity exponent of 0.4. Microstructural observations suggest that grain boundary sliding (GBS) makes a substantial contribution to the superplastic deformation, and the dynamic recrystallization is the accommodated mechanism for the deformation. |
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| Keywords: | superpalsticity AZ31 magnesium alloy grain boundary sliding dynamic recrystallization |
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