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混合稀土對Mg-5Al-1Si組織及性能的影響
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TG146.22

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國家高技術研究發(fā)展計劃(“863”計劃)重點資助項目(2001AA331030)


Effect of RE on the Microstructure and Properties of Mg-5Al-1Si Alloy
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    摘要:

    研究了不同組分含量的混合稀土對Mg-5Al-1Si合金高溫蠕變性能的影響，對析出相進行了鑒定。研究結果表明，分別加入富鑭及富鈰混合稀土以后，合金中Mg2Si相得到細化；力學性能檢測結果表明，室溫及150℃拉伸性能均明顯提高。同時，在微量混合稀土及Mg2Si相的綜合作用下，含不同混合稀土的Mg-5Al-1Si合金的抗高溫蠕變性能均超過AE42。

    Abstract:

    The influence of different contents of RE on microstructure of Mg-5Al-1Si alloys was studied. Also, the extracting phases were identified and the extracting process and its influence on the mechanical property of alloy were investigated. The results show that addition of small amount of RE to Mg-5Al-1Si alloys resulted in refinement of microstructure. The morphology of the Mg2Si phase changed form coarse Chinese script shape to the fine polygonal shape. Owing to the improvement of microstructure, the mechanical properties of Mg-5Al-1Si alloys at both ambient and elevated temperatures were increased . The high temperature creep resistant properties of Mg-5Al-1Si-xRE raises with the increase of RE content and higher than that of AE42.

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黃曉鋒 王渠東 劉六法 朱燕萍 袁廣銀 盧晨 丁文江.混合稀土對Mg-5Al-1Si組織及性能的影響[J].稀有金屬材料與工程,2005,34(5):795~798.[Huang Xiaofeng, Wang Qudong, Liu Liufa, Zhu Yanping, Yuan Guangyin, Lu Chen, Ding Wenjiang. Effect of RE on the Microstructure and Properties of Mg-5Al-1Si Alloy[J]. Rare Metal Materials and Engineering,2005,34(5):795~798.]
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  • 最后修改日期:2003-10-14
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