研究了稀土元素Y(0～2.4wt%)对Mg-6Al合金显微组织和力学性能的影响.结果表明,添加稀土元素Y可以显著提高时效态合金从室温至200℃区间的拉伸屈服强度和抗拉强度.在Mg-6Al合金中加入0.6wt%～2.4wt%的Y后,合金的显微组织均得到细化,Al2Y高熔点点状稀土合金相产生.在本研究的范围内,加入1.2wt%Y的合金从组织到性能各项性能最优.
参考文献
| [1] | 杨明波,潘复生,张静.Mg-Al系耐热镁合金的开发及应用[J].铸造技术,2005(04):331-335. |
| [2] | 高强.最新有色金属金相图谱大全[M].北京:冶金工业出版社,2005:975-979. |
| [3] | 陈振华.耐热镁合金[M].北京:化学工业出版社,2007:79-87. |
| [4] | S. Al Shakhshit;M. Medraj .Computational Thermodynamic Model for the Mg-Al-Y System[J].Journal of Phase Equilibria and Diffusion,2006(3):231-244. |
| [5] | Bramfitt B L .The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron[J].Metallurgical and Materials Transactions,1970,1(07):1987-1995. |
| [6] | 余琨,黎文献,张世军.Ce对镁及镁合金中晶粒的细化机理[J].稀有金属材料与工程,2005(07):1013-1016. |
| [7] | Drnschitz A P;Showalter E R;Joseph et al.Evolution of structural and high-temperature magnesium alloys[R].SAE Technological Paper,2002. |
| [8] | 束德林.金属力学性能[M].北京:机械工业出版社,1999:16-18. |
| [9] | Armstrong R;Cold I;Doutwaite R M et al.The relation of yield and flow stresses with grain size in polycrystalline iron[J].Philosophical Magazine,1962,77(07):45-51. |
| [10] | Hiromasa Yabe;Toshiro Kuji .Thermal stability and hydrogen absorption/desorption properties of Mg_(17)Al_(12) produced by bulk mechanical alloying[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2007(1/2):241-245. |
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%