Effect of solute concentration on the serrated flow in solution-treated Al-4%Cu alloys  

作　　者：江慧丰 张青川 孙亮 伍小平 

机构地区：[1]Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Chinese Academy of Sciences, Hefeli 230027, China

出　　处：《Chinese Physics B》2006年第5期1051-1054,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant Nos 10232030 and 10372098）.

摘　　要：In order to compare with annealed Al-4%Cu alloys, the influence of solute concentration on the serrated flow is investigated by solution treatment. In this paper, some dynamic parameters, such as critical time and the ultimate tensile strength are obtained. Moreover, the change of the strain rate range for serrated flow in Al-4%Cu alloys prepared by annealing and quenching heat treatments is reported too. The difference between them is attributed to the increasing solute concentration in the bulk of the solution treated materials.In order to compare with annealed Al-4%Cu alloys, the influence of solute concentration on the serrated flow is investigated by solution treatment. In this paper, some dynamic parameters, such as critical time and the ultimate tensile strength are obtained. Moreover, the change of the strain rate range for serrated flow in Al-4%Cu alloys prepared by annealing and quenching heat treatments is reported too. The difference between them is attributed to the increasing solute concentration in the bulk of the solution treated materials.

关 键 词：Portevin-Le Chatelier effect solution treatment dynamic strain aging 

分 类 号：TB3[一般工业技术—材料科学与工程]