| Sr对ZK60镁合金晶粒细化的影响 |
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| 引用本文： | 程仁菊,潘复生,杨明波,汤爱涛.Sr对ZK60镁合金晶粒细化的影响[J].北京科技大学学报,2008,30(12). |
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| 作者姓名： | 程仁菊 潘复生 杨明波 汤爱涛 |
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| 作者单位： | 1. 重庆大学材料科学与工程学院,重庆,400030
2. 重庆工学院材料科学与工程学院,重庆,400050 |
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| 基金项目： | 国家杰出青年基金资助项目
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国家重点基础研究发展规划资助项目
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| 摘 要： | 用金相显微分析、扫描电镜分析及能谱分析等方法研究了Sr对ZK60镁合金晶粒细化的影响. 结果表明:添加少量的Sr对ZK60镁合金有很好的组织细化效果,但其细化效率受Sr加入量和熔体保温时间的影响较大. 在给定熔体保温时间的条件下,随着Sr质量分数从0.01%增加到0.1%,晶粒细化效率逐渐提高. 在给定Sr加入量的条件下,当熔体保温时间为20～80min时,晶粒细化效率随熔体保温时间的延长而提高;当熔体保温时间超过80min后,晶粒细化效率随熔体保温时间的延长而降低.
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| 关 键 词： | ZK60镁合金 锶 中间合金 晶粒细化 |
Effect of Sr on the grain refinement of ZK60 magnesium alloy |
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| CHENG Renju,PAN Fusheng,YANG Mingbo,TANG Aitao.Effect of Sr on the grain refinement of ZK60 magnesium alloy[J].Journal of University of Science and Technology Beijing,2008,30(12). |
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| Authors: | CHENG Renju PAN Fusheng YANG Mingbo TANG Aitao |
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| Institution: | CHENG Renju1),PAN Fusheng1),YANG Mingbo2),TANG Aitao1)1)Materials Science & Engineering College,Chongqing University,Chongqing 400030,China2)Materials Science & Engineering College,Chongqing Institute of Technology,Chongqing 400050,China |
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| Abstract: | The effect of Sr addition on the grain refinement of ZK60 magnesium alloy was investigated by means of OM,SEM and EDX.The results indicate that adding small amounts of Sr can effectively refine the as-cast microstructure of ZK60 alloy,but the effects of Sr adding amount and melt holding time on the refinement efficiency are obvious.For a given melt holding time,the refinement efficiency enhances with the Sr adding amount increasing from 0.01% to 0.1%.For a given Sr adding amount,the refinement efficiency en... |
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| Keywords: | ZK60 magnesium alloy strontium Mg-Sr master alloy grain refinement |
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