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等通道角挤压对AZ91镁合金组织性能的影响 被引量：5

Effect of Equal Channel Angular Pressing on Microstructure and Mechanical Properties of AZ91 Alloy
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摘要 在对等通道角挤压中模具通道夹角、挤压路线和挤压温度研究的基础上,确定了实验中的理想工艺。研究发现,AZ91镁合金经过一个道次的等通道角挤压后,材料中就有大量的超细晶粒出现。随着道次数增加,超细晶粒比例逐渐增多。AZ91镁合金经过225℃四道次+180℃二道次的挤压后,屈服强度和抗拉强度分别达到290MPa和417MPa,伸长率达到8.45%。 Based on the investigation of die angle, pressing route and pressing temperature, the optimum parameters were chosen in the experiments of equal channel angular pressing （ECAP）. It was found that a great deal of ultra-fine grains appear in AZ91 just after one pass of ECAP. With the increase of pass number, the proportion of ultra-fine grain increases. After ECAP with 4 passes at 225℃and 2 passes at 180℃, the yield strength and ultimate tensile strength of AZ91 increases to 290MPa and 417MPa respectively, and elongation increases to 8.45%.
作者 陈彬 林栋樑 曾小勤 卢晨
机构地区 上海交通大学金属基复合材料国家重点实验室
出处 《热加工工艺》 CSCD 北大核心 2006年第13期13-16,共4页 Hot Working Technology
关键词 AZ91 等通道角挤压法 微观组织:力学性能 AZ91 equal channel angular pressing microstructure mechanical properties
分类号 TG146.22 [金属学及工艺—金属材料] TG376 [金属学及工艺—金属压力加工]
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参考文献13

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二级参考文献33

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共引文献42

同被引文献48

引证文献5

二级引证文献34

热加工工艺
2006年 第13期

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