| 重稀土耐热镁合金的研究现状及发展 |
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| 引用本文： | 刘宝忠,范燕平,刘娇娇,彭秋明.重稀土耐热镁合金的研究现状及发展[J].材料导报,2012,26(11):110-113,118. |
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| 作者姓名： | 刘宝忠 范燕平 刘娇娇 彭秋明 |
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| 作者单位： | 1. 河南理工大学材料学院,焦作,454000
2. 燕山大学材料科学与工程学院,秦皇岛,066000 |
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| 基金项目： | 国家自然科学基金，中国博士后特别资助，中国博士后基金 |
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| 摘 要： | 重稀土元素在金属镁中有较大的固溶度,且固溶度随温度的降低急剧减小,热处理后固溶强化及时效强化效果明显,因此,重稀土耐热镁合金成为研究的热点。重点介绍了Mg-Y、Mg-Gd、Mg-Ho几种重稀土耐热镁合金及其研究现状,分析了Y、Gd、Ho重稀土元素的性质,在耐热镁合金中的作用及强化镁合金的机理,总结了重稀土耐热镁合金在应用中存在的问题,并对其发展及应用提出了具体看法。
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| 关 键 词： | 重稀土 镁合金 强化机理 |
Research and Development of Heat Resistant Magnesium-Heavy Rare Earth Alloys |
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| LIU Baozhong
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FAN Yanping
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LIU Jiaojiao
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PENG Qiuming.Research and Development of Heat Resistant Magnesium-Heavy Rare Earth Alloys[J].Materials Review,2012,26(11):110-113,118. |
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| Authors: | LIU Baozhong FAN Yanping LIU Jiaojiao PENG Qiuming |
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| Affiliation: | 1 School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454000;2 School of Materials Science and Engineering,Yanshan University,Qinhuangdao 066000) |
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| Abstract: | The heavy rare earth(HRE) elements have large solubility in Mg matrix at high temperature and rapid decrease with lowering temperature.The Mg-HRE alloys show remarkable solution strengthening and age-hardening response after heat processing,and are considered as the most promising heat resistance Mg alloys.The current researches of Mg-Y,Mg-Gd and Mg-Ho alloys are introduced,the characteristics of Y,Gd and Ho element,the effects of HRE in Mg and strengthening mechanism of magnesium alloys are analyzed,and the problems of Mg-HRE alloys in application are discussed.The developments and applications of Mg-HRE alloys are also prospected. |
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| Keywords: | heavy rare earth magnesium alloys strengthening mechanism |
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