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稀土对时效-回归-再时效处理的Al-Zn-Mg合金硬度和氢脆的影响 被引量：1

Effects of rare earths on hardness and hydrogen embrittlement of an aged-retrogressed-reaged Al-Zn-Mg alloy
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摘要 将少量稀土元素添加到Al Zn Mg合金中进行时效 回归 再时效处理.利用扫描电子显微镜和X射线衍射对该合金的显微结构和沉淀相进行了观察和研究.结果表明,经过时效 回归 再时效处理后,稀土Al Zn Mg合金的晶粒尺寸减小,沉淀相MgZn2增加,同时,峰时效硬度和氢脆阻力增强. The effects of a small amount of rare earth (RE) elements added on the hardness and hydrogen embrittlement of an aged and retrogressed-reaging Al-Zn-Mg alloy were investigated. Scanning electron microscopy and X-ray diffraction were employed to study the microstructure and the precipitation phase of the alloy. The addition of RE improves the precipitation of a strengthing phase (MgZn_2) and decreases the grain size. By the addition of RE, the strength, hardness and elongation of the alloy at peak-aging can be improved, the hardness and hydrogen embrittlement resistance of the alloy after aged-retrogressed-reaged can be enhanced.
作者 徐跃 于文学 郑伟涛 赵竹第
机构地区 吉林大学测试科学实验中心 吉林大学材料科学与工程学院材料科学系
出处 《吉林大学学报（理学版）》 CAS CSCD 北大核心 2004年第4期578-581,共4页 Journal of Jilin University:Science Edition
基金 国家自然科学基金(批准号:50372024) 教育部高校青年教师基金(批准号:2002359).
关键词 MG合金 时效处理 沉淀相 氢脆 硬度 稀土 晶粒尺寸 增强 添加 扫描电子显微镜 rare earths Al-Zn-Mg alloy aging-retrogression-reaging hardness and hydrogen embrittlement
分类号 N94-02 [自然科学总论—系统科学] TG146 [金属学及工艺—金属材料]
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参考文献12

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共引文献1

同被引文献12

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吉林大学学报（理学版）
2004年 第4期

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