| AZ91D镁合金的晶粒细化 |
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| 引用本文： | 张永忠,赵浩峰. AZ91D镁合金的晶粒细化[J]. 理化检验(物理分册), 2004, 40(2): 68-70 |
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| 作者姓名： | 张永忠 赵浩峰 |
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| 作者单位： | 1. 太原理工大学,太原,030024
2. 太原理工大学,太原,030024;西安交通大学,西安,710054 |
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| 摘 要： | AZ91D镁合金属于密排六方结构，它在塑性变形性能和力学性能上呈现较低的特征。采用晶粒细化的方法可在很大程度上改善镁合金的力学性能。选用MgCO3，La2(CO3)3及两者的混和物分别作为AZ91D镁合金的细化剂。实验结果表明，MgCO3和La2(CO3)3作为镁合金的细化剂各有特点，而用MgCO3与La2(CO3)3的混和物细化效果更好。
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| 关 键 词： | AZ91D镁合金 晶粒细化 冲击值 碳酸镁 碳酸镧 细化剂 晶粒尺寸 |
| 文章编号： | 1001-4012(2004)02-0068-03 |
GRAIN REFINEMENT FOR AZ91D MAGNESIUM ALLOY |
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| ZHANG Yong-zhong,ZHAO Hao-feng. GRAIN REFINEMENT FOR AZ91D MAGNESIUM ALLOY[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2004, 40(2): 68-70 |
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| Authors: | ZHANG Yong-zhong ZHAO Hao-feng |
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| Affiliation: | ZHANG Yong-zhong~1,ZHAO Hao-feng~ |
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| Abstract: | The AZ91D magnesium alloy has the crystal structure of hexagonal close packed lattice. The performance of plastical deformation and its mechanical property have been lower feature. But the fine structure contributes to slipping and restrains twinning. Therefore, grain refining can improve the mechanical properties of the magnesium alloy to great extent. MgCO_3, La_2(CO_3)_3 and the mixture of them are used as the grain refiner in magnesium alloy. The result showed that as grain refiner of magnesium alloy, MgCO_3, La_2(CO_3)_3 had respectively their own characteristic, and the mixture of them had better effect on magnetism alloy than any one of them. |
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| Keywords: | AZ91D magnesium alloy Grain refinement Impact value |
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