采用铜模喷铸法制备出直径为3 mm的原位Mg晶态相增强块状Mg70Cu17Dy13非晶基复合材料,对Mg-Cu-Dy 类合金的力学性能和变形行为进行研究.结果表明,Mg70Cu17Dy13非晶基复合材料受压时产生加工硬化并获得最大抗压强度为702.38 MPa和塑性变形率为0.81％.这缘于其中Mg相有效的承载能力、塑性变形能力及Mg相对剪切带及裂纹扩展的有效抑制作用,可从其剪切变形、断裂方式和断裂面上密集的熔滴及凸凹不平得到证实.
参考文献
| [1] | Xi X K;Zhao D Q;Pan M X .[J].Physical Review Letters,2005,94:125510. |
| [2] | Xu Y K;Xu J .[J].Scripta Materialia,2003,49(09):843. |
| [3] | Li Z G;Hui X;Zhang C M et al.[J].Journal of Alloys and Compounds,2008,454(01):168. |
| [4] | Ma H;Xu J;Ma E .[J].Applied Physics Letters,2003,83(14):2372. |
| [5] | 惠希东,董伟,王美玲,刘雄军,于家伶,陈国良.超常塑性Mg77Cu12Zn5Y6块体金属玻璃基内生复合材料[J].科学通报,2006(02):224-229. |
| [6] | Tian W;Pang S J;Men H et al.[J].University Science Technologyof Beijing,2007,14(01):43. |
| [7] | Kim S G;Inoue A;Masumoto T .[J].Materials Transactions-Japan Institute of Metals,1991,32(09):875. |
| [8] | Hays CC.;Johnson WL.;Kim CP. .Microstructure controlled shear band pattern formation and enhanced plasticity of bulk metallic glasses containing in situ formed ductile phase dendrite dispersions[J].Physical review letters,2000(13):2901-2904. |
| [9] | Li J Q;Wang L;Zhang H F et al.[J].Materials Letters,2007,61(l1):2217. |
| [10] | Pan D G;Zhang H F;Wang A M et al.[J].Applied Physics Letters,2006,89(26):1904. |
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%