Microstructures and mechanical properties of high strength Mg-Zn-Mn alloy

被引：11
|
作者：
张丁非 [1 ,2 ]
石国梁 [2 ]
戴庆伟 [2 ]
袁炜 [2 ]
段红玲 [2 ]
机构：
[1] National Engineering Research Center for Magnesium Alloys,Chongqing University
[2] College of Materials Science and Engineering,Chongqing University
来源：
TransactionsofNonferrousMetalsSocietyofChina | 2008年 / 18(S1)卷 / S1期
关键词：
high strength; Mg-Zn-Mn alloy; microstructures; mechanical properties;
D O I：
暂无
中图分类号：
TG146.22 [];
学科分类号：
080502 ;
摘要：
The microstructures and mechanical properties of a new Mg-6%Zn-1%Mn(mass fraction) wrought magnesium alloy were studied,which could be extruded smoothly at 310-330℃with a complete dynamic recrystallization.After solution treatment one and two-step aging techniques were used.All as-aged microstructures contained two types of dispersed phases:β’ phases and pureα-Mn particles.The two-step aging had a better strengthening effect than the traditional one-step aging,and the strength value achieved by the two-step aging could reach that of the ZK60 wrought magnesium alloy.The outstanding precipitation strengthening effect of the alloy should be attribute to the GP zones,diffusive solute-rich zones and some metastable phases formed during the first step aging that provide more effective nuclei for Mg-Zn strengthening phases during the second step aging.
引用
收藏
页码：59 / 63
页数：5
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