Effect of precipitation on Portevin-Le Chatelier effect in Al-Mg alloys

被引：7

作者：

Hu Qi ^{[1
]}

Zhang Qing-Chuan ^{[1
]}

Fu Shi-Hua ^{[1
]}

Cao Peng-Tao ^{[1
]}

Gong Ming ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China

来源：

ACTA PHYSICA SINICA | 2011年 / 60卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Portevin-Le Chatelier effect; dynamic strain aging; Al-Mg alloys; SERRATED FLOW; BANDS;

D O I：

10.7498/aps.60.096201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the alloy with solute content higher than the limiting solubility, the solute atoms failing to dissolve will precipitate from the solid solution and form precipitations. In this study, the Portevin-Le Chatelier (P-LC) effects in annealed 5456 and 5052 aluminum alloys with different precipitation content are investigated under different applied strain rates respectively. The findings suggest that precipitations have a significant effect on the P-LC effect and different precipitation content has different effects. Furthermore, the solute diffusion is pipe diffusion in 5052 alloy with lower precipitation content. However, for 5456 alloy with higher precipitation content, the diffusion is no longer the case but more complex.

引用

页数：8

共 25 条

[11] Spatio-temporal dynamics of the Portevin-Le Chatelier effect:: Experiment and modelling [J].