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挤压态Mg-10Gd-3Y合金动态维氏硬度的研究

Study on Dynamic Vickers Hardness of As-extruded Mg-10Gd-3Y Alloy
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摘要 研究了挤压态Mg-10Gd-3Y合金的动态维氏硬度,分析了压痕周围的微观组织,并与静态维氏硬度值进行对比。结果表明:挤压态Mg-10Gd-3Y合金动态维氏硬度高于静态维氏硬度,表现出明显的应变率正效应,并且其动态维氏硬度随应变量的增加出现一个极大值,压痕周围出现孪晶组织,随应变量的增加孪晶数量减少。 The dynamic Vickers hardness of as-extruded Mg-10Gd-3Y alloy is investigated and the microstructure around the indentation is analyzed.The results show that the dynamic Vickers hardness of as-extruded Mg-10Gd-3Y alloy is higher than the corresponding static ones,and is stress rate sensitivie.The dynamic Vickers hardness increases and reaches maximum with increasing strain rate.There is the twin and deformation around the indentation region,and the number of twin reduces with increasing strain rate.
作者 安林林 杨素媛
机构地区 北京理工大学材料科学与工程学院
出处 《材料开发与应用》 CAS 2010年第5期12-15,共4页 Development and Application of Materials
关键词 Mg-10Gd-3Y合金 动态维氏硬度 应变率强化 孪晶 Mg-10Gd-3Y alloy Dynamic Vickers hardness Stress rate strengthening Twin
分类号 TG146.22 [金属学及工艺—金属材料]
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参考文献8

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材料开发与应用
2010年 第5期

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