摘要
采用锻后直接时效处理的方法研究了时效处理工艺对高强耐热镁合金等温模锻件的组织与性能的影响,分析了其时效强化过程中第二相的形成及时效处理制度相关的断裂行为,得出了其时效强化的内在机理及优化的锻后时效制度。研究表明优化的时效处理制度为200℃×63 h。在该时效制度下,材料的室温抗拉强度达到了371 MPa,屈服强度达到243 MPa,伸长率达4.1%
The effect of aging treatment on microstructure and mechanical properties of forging heat-resisting Mg alloy was studied by single aging treatment.The aging phase and fracture behavior were analized.Accroding to the experiment results the optimized treatment process and intrinsic mechanism were achived.After heat treatment at 200℃×63 h,the fracture strength reaches 371 MPa,the yield strength reaches 243 MPa and the elongation reaches 4.1%.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2012年第1期54-56,66,共4页
Aerospace Materials & Technology
基金
国防基础科研计划项目(A0320110003)
关键词
镁合金
等温成形
时效处理
力学性能
Magnisum alloy
Isothermal forming
Aging treatment
Mechanical property
