文献类型：期刊文献

中文题名：异步轧制工艺参数对MB1镁合金板材组织和性能的影响

英文题名：Influences of Differential Speed Rolling Process Parameters on Microstructure and Properties of MB1 Magnesium Alloy Sheets

作者：李伟[1];张修庆[1];冯文涛[1];齐建军[1];赵祖欣[1];马春江[1]

机构：[1]华东理工大学承压系统安全科学教育部重点实验室,机械与动力工程学院,上海200237

年份：2009

期号：10

起止页码：5

中文期刊名：机械工程材料

外文期刊名：Materials For Mechanical Engineering

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：上海市重点学科建设资助项目(B503)

语种：中文

中文关键词：MBI镁合金;异速比;轧制路径;显微组织;力学性能

外文关键词：MB1 magnesium alloy; different speed ratioy;rolling route; microstructure; mechanical property

摘要：采用不同异速比（1．2～1．8）和轧制路径对MB1镁合金板材进行异步轧制，对轧制得到合金板材的显微组织和力学性能进行了研究。结果表明：开始随着异速比（〈1．6）的增大，MB1镁合金板材的显微组织逐渐细化，孪晶数量不断减少，抗拉强度和伸长率增大；当异速比为1．6时，合金的晶粒最均匀细小，平均尺寸约为20μm，且几乎没有孪晶，抗拉强度为235MPa，伸长率达到23％；再进一步增大异速比，合金的力学性能又有所下降；按不同路径进行轧制，合金的晶粒逐步细化、均匀，孪晶依次减少，板材的伸长率按路径A，B，C，D的顺序逐步升高，强度逐步降低。
The microstructure and mechanical properties of MB1 magnesium alloy sheet produced by differential speed rolling process under the conditions of different rolling speed ratios （1.2--1.8） and rolling routes were studied. The results show that when the rolling speed ratio increased from 1.2 to 1.6, the grains became refined and twins disappeared gradually, and the tensile strength and elongation all increased. Especially when the rolling speed ratio was 1. 6, the alloy had minimum grain size of 20 μm with no twin, its tensile strength and elongation could reach 235 MPa and 23%. However, when the rolling speed ratio increased further, the mechanical properties droped a little. When the routes were changed from A, B, C to D, the grains became refined and twins disappeared gradually, while the strength decreased and elongation increased gradually.