期刊论文

Li Wenbin

英文

稀有金属(英文版)

1001-0521

2009

28

1

102-106

10.1007/s12598-009-0020-8

This project was financially supported by the National High-Tech Research and Development Program of China （No. 2006AA03Z523）.

本校为其他机构

Five kinds of Al-Zn-Mg-Cu-Zr based alloys with different Sc additions were prepared by ingot metallurgy. The effects of minor Sc on the microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr based alloys were investigated using tensile tests, optical microscopy (OM), and transmission electron microscopy (TEM). The results show that the ultimate tensile strength and yield strength are improved by 94 and 110 MPa, respectively, and the elongation to failure remains at a reasonable extent (11.1%) in the Al-Zn-Mg-Cu-Zr based alloy with 0.21 wt.%...

五种 Al-Zn-Mg-Cu-Zr 与不同 Sc 增加基于合金被铸块锭冶金学准备。微观结构和 Al-Zn-Mg-Cu-Zr 的机械性质上的次要的 Sc 的效果基于合金用张力的测试，光显微镜学(OM ) ，和传播电子显微镜学(TEM ) 被调查。结果证明分别地，最终的张力的力量和收益力量被 94 和 110 MPa 改进并且到在在 Al-Zn-Mg-Cu-Zr 的合理程度(11.1%)的失败遗体的延伸为 40 min 在 475 °C 在答案热处理以后与 0.21 wt.% Sc 增加基于合金然后为 24 h 在 120 °C 变老。次要的 Sc 的增加导致艾尔 3(Sc,Zr) 粒子的形成，它在精制演员组微观结构是高度有效的，延迟再结晶，和卡住的脱臼。力量的增长主要被归因于好谷物加强，艾...