| EW93镁合金轧制-T5状态的显微组织与力学性能 |
| |
| 引用本文： | 张新明,宁振忠,李理,邓运来,唐昌平,周楠.EW93镁合金轧制-T5状态的显微组织与力学性能[J].中南大学学报(自然科学版),2011,42(12). |
| |
| 作者姓名： | 张新明 宁振忠 李理 邓运来 唐昌平 周楠 |
| |
| 作者单位： | 中南大学材料科学与工程学院,湖南长沙,410083 |
| |
| 基金项目： | 国家重点基础研究计划(“973”计划)项目(5133001E); 国家高技术研究发展计划(“863”计划)项目(2005AA741062) |
| |
| 摘 要： | 研究EW93镁合金在轧制-T5状态的显微组织与力学性能,并与铸造T6态进行比较.研究结果表明；合金经过热轧制变形,发生了明显的动态再结晶,晶粒显著细化,轧制-T5态的晶界强化贡献由铸造T6态的12.2％上升到26.7％.轧制板材经过T5处理后,抗拉强度和屈服强度均有大幅度提高,分别由228 MPa和177 MPa提高到372 MPa和311 MPa,但析出相不均匀,伸长率由4.3％降低为3.1％.对于铸造T6态和轧制-T5态,沉淀强化均是主要的强化机制,沉淀强化贡献分别为66.7％和54.3％.
|
| 关 键 词： | EW93镁合金合金 轧制 时效 强化机制 |
Microstructures and mechanical properties of EW93 magnesium alloy with rolled-T5 temper |
| |
| ZHANG Xin-ming
,
NING Zhen-zhong
,
LI Li
,
DENG Yun-lai
,
TANG Chang-ping
,
ZHOU Nan.Microstructures and mechanical properties of EW93 magnesium alloy with rolled-T5 temper[J].Journal of Central South University:Science and Technology,2011,42(12). |
| |
| Authors: | ZHANG Xin-ming NING Zhen-zhong LI Li DENG Yun-lai TANG Chang-ping ZHOU Nan |
| |
| Institution: | ZHANG Xin-ming,NING Zhen-zhong,LI Li,DENG Yun-lai,TANG Chang-ping,ZHOU Nan (School of Materials Science and Engineering,Central South University,Changsha 410083,China) |
| |
| Abstract: | The strengthening mechanism of the rolled EW93 magnesium alloy through T5 heat treatment was investigated.The microstructures and mechanical properties of the alloy with cast-T6 and rolled-T5 temper were compared.The results show that effective grain refinement is attained after hot rolling and the contribution of grain boundary strengthening rises from 12.2% to 26.7%.After optimizing the heat treatment parameters,the ultimate tensile strength and yield strength of the as-rolled sample increase to 372 MPa a... |
| |
| Keywords: | EW93 magnesium alloy rolling aging strengthening mechanism |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
