| 高锶含量AZ31镁合金的铸态组织及含锶相(英文) |
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| 引用本文： | 吴璐,潘复生,杨明波,吴菊英,刘婷婷.高锶含量AZ31镁合金的铸态组织及含锶相(英文)[J].中国有色金属学会会刊,2011,21(4):784-789. |
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| 作者姓名： | 吴璐 潘复生 杨明波 吴菊英 刘婷婷 |
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| 作者单位： | 吴璐,潘复生,吴菊英,刘婷婷,WU Lu,PAN Fu-sheng,WU Ju-ying,LIU Ting-ting(重庆大学国家镁合金工程技术研究中心,重庆,400044);杨明波,YANG Ming-bo(重庆理工大学材料科学与工程学院,重庆,400050) |
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| 基金项目： | Project (50725413) supported by the National Natural Science Foundation of China，Project (2007CB613704) supported by the National Basic Research Program of China，Project (2010CSTC-BJLKR) supported by Chongqing Science and Technology Commission |
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| 摘 要： | 研究不同Sr含量(0,0.3%,2.5%和5.0%,质量分数)的AZ31镁合金的铸态组织及含锶相。结果表明:在AZ31镁合金中添加Sr后,枝晶/晶粒尺寸变小,并且在0~5.0%的范围内,随着Sr含量的增加,枝晶细化且形态出现钝化现象,位于晶界/枝晶界的合金相分布更加弥散。添加0.3%Sr后,β-Mg17Al12相从未添加Sr的AZ31合金中的连续、不规则条状转变为不连续、不规则条状和/或细小颗粒状。在添加2.5%Sr和5.0%Sr的合金中发现了一些层片状共晶相,且后者的层片间距更加小。较高含量的Sr添加到AZ31镁合金中可以形成一种新的共晶和/或离异共晶三元Mg11Al5Zn4相,在添加2.5%Sr和5.0%Sr的合金中发现了Mg17Sr2相和Mg2Sr相。
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| 关 键 词： | 镁合金 AZ31镁合金 含锶相 锶 |
As-cast microstructure and Sr-containing phases of AZ31 magnesium alloys with high Sr contents |
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| WU Lu,PAN Fu-sheng,YANG Ming-bo,WU Ju-ying,LIU Ting-ting.As-cast microstructure and Sr-containing phases of AZ31 magnesium alloys with high Sr contents[J].Transactions of Nonferrous Metals Society of China,2011,21(4):784-789. |
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| Authors: | WU Lu PAN Fu-sheng YANG Ming-bo WU Ju-ying LIU Ting-ting |
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| Affiliation: | WU Lu 1,PAN Fu-sheng 1,YANG Ming-bo 2,WU Ju-ying 1,LIU Ting-ting 1 1. National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China,2. College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 400050 |
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| Abstract: | The as-cast microstructure and Sr-containing phases in the AZ31 magnesium alloys with different Sr contents (0%, 0.3%, 2.5% and 5.0%, mass fraction) were investigated. The results indicate that after adding Sr to the AZ31 magnesium alloy, the dendrite/grain size is decreased, and with the Sr content increasing from 0 to 5.0%, the dendrite becomes finer, the dendrite morphology becomes more passive and the distribution of alloying phases at dendrite/grain boundary is dispersed. Furthermore, the morphology of... |
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| Keywords: | magnesium alloy AZ31 magnesium alloy Sr-containing phase Sr |
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