包章琦;高永浩;蒋树农;刘楚明;卢立伟;

• 1:中南大学材料科学与工程学院
• 2:中南大学土木工程学院
• 3:湖南科技大学材料科学与工程学院

摘要(Abstract)：

为研究轧制温度对Mg-8.3Gd-2.6Y-0.4Zr(质量分数/%)合金显微组织和力学性能的影响,将500℃预轧制所得板材在200、300、400℃进行二次轧制变形。结果表明:200℃二次轧制变形使合金中引入大量位错和孪晶;合金在300℃二次轧制过程中,于晶界和晶粒内部分别形成大量的β相和β′相,而400℃二次轧制仅使合金晶界处形成粗大的β相;不同温度下二次轧制变形均使预轧制板材的基面织构强度增大,二次轧制温度越低,基面织构越强;不同温度下二次轧制变形均使预轧制板材的强度提高,二次轧制温度越低,合金强度提高越显著;经200℃二次轧制得到的合金具有331 MPa的最高屈服强度。

关键词(KeyWords)： 镁合金;轧制温度;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 包章琦;高永浩;蒋树农;刘楚明;卢立伟;

Email:

DOI: 10.14024/j.cnki.1004-244x.20170626.002

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