Dynamic recrystallization of AZ91 magnesium alloy during compression deformation at elevated temperature

被引：0

作者：

李淑波

王艳秋

郑明毅

吴昆

机构：

[1] SchoolofMaterialsScienceandEngineering,SchoolofMaterialsScienceandEngineering,SchoolofMaterialsScienceandEngineering,SchoolofMaterialsScienceandEngineeringHarbinInstituteofTechnology,Harbin,China,HarbinInstituteofTechnology,Harbin,China,HarbinInstituteofTe

来源：

Transactions of Nonferrous Metals Society of China | 2004年 / 02期

关键词：

AZ91 magnesium alloy; high temperature compression; continuous dynamic recrystallization;

D O I：

暂无

中图分类号：

TG146.22 [];

学科分类号：

080502 ;

摘要：

High temperature compressive tests of AZ91 Mg alloy were carried out at 573723 K and strain rates of 0.0011 s-1. The microstructures of as-compressed samples were observed by optical microscopy and transmission electron microscopy （TEM）, and the microhardness was also tested. It is shown that with the increase of temperature or the decrease of strain rate, the flow stress decreases, at the same time the dynamic recrystallization （DRX） of the alloy is more noticeable. The microstructures reveal that continuous dynamic recrystallization, which develops through conversion of low-angle grain boundaries into high-angle boundaries, occurs preferentially at the grain boundary.

引用

页码：306 / 310

页数：5