Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy
文献类型：期刊论文
| 作者 | J. X. Zhou ; J. Wang ; Y. S. Yang |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2010 |
| 卷号 | 20页码:S331-S335 |
| 关键词 | magnesium alloy AZ91D strontium (Sr) rare earth grain refinement precipitation dendrite growth mechanical-properties grain-refinement microstructure behavior ca |
| ISSN号 | 1003-6326 |
| 中文摘要 | To develop AZ91D alloys with fine microstructure, effects of the addition of rare earth (RE), Sr and RE + Sr on the dendrite growth and phase precipitation in AZ91D magnesium alloy were studied, respectively. The results show that the microstructure is refined and the morphology of beta-Mg(17)A1(12) phase is modified with RE or Sr addition, especially with the RE+Sr composite addition which can reduce the average grain size of AZ91D alloy obviously to 141 mu m. The needle-like or block-like new phases adhering to mu-Mg(17)A1(12) phase form at interdendrites during solidification. The enrichment of RE or/and Sr elements in front of the solidification interface, especially at the tips of alpha-Mg dendrite, which restricts the growth of alpha-Mg dendrite, changes the preferential growth of alpha-Mg and finally results in the grain refinement and the blunting of alpha-Mg dendrite. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31776]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. X. Zhou,J. Wang,Y. S. Yang. Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy[J]. Transactions of Nonferrous Metals Society of China,2010,20:S331-S335. |
| APA | J. X. Zhou,J. Wang,&Y. S. Yang.(2010).Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy.Transactions of Nonferrous Metals Society of China,20,S331-S335. |
| MLA | J. X. Zhou,et al."Effects of RE and Sr additions on dendrite growth and phase precipitation in AZ91D magnesium alloy".Transactions of Nonferrous Metals Society of China 20(2010):S331-S335. |
入库方式： OAI收割
来源：金属研究所
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