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371MPa,屈服强度达到243 MPa,伸长率达4.1％
参考文献
| [1] | Shepeleva L;Bamberger M .Microstructure of high pressure die cast AZ91D modified with Ca and Ce[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006,425(1/2):312-317. |
| [2] | Guohua Wu;Yu Fan;Hongtao Gao;Chunquan Zhai;Yan Ping Zhu .The effect of Ca and rare earth elements on the microstructure, mechanical properties and corrosion behavior of AZ91D[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):255-263. |
| [3] | Du WW.;Sun YS.;Min XG.;Xue F.;Zhu M.;Wu DY. .Microstructure and mechanical properties of Mg-Al based alloy with calcium and rare earth additions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):1-7. |
| [4] | Luo Z P;SOng D Y;Zhang S Q .Strengthening effects of rare earths on wrought Mg-Zn-Zr-RE alloys[J].Journal of Alloys and Compounds,1995,230:109-114. |
| [5] | Alok Singh;M. Nakamura;M. Watanabe;A. Kato;A. P. Tsai .Quasicrystal strengthened Mg-Zn-Y alloys by extrusion[J].Scripta materialia,2003(5):417-422. |
| [6] | Z. Yang;J.P. Li;Y.C. Guo .Precipitation process and effect on mechanical properties of Mg-9Gd-3Y-0.6Zn-0.5Zr alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):274-280. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%