Effect of Alloy Composition and Pre-Ageing on the Stretch Formability of 6xxx Automotive Sheet Alloys

被引：0

作者：

Zhong, Hao ^{[1
]}

Cao, Lingfei ^{[2
]}

机构：

[1] Suzhou Nonferrous Met Technol Co Ltd, Suzhou 215026, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

来源：

THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS | 2018年 / 941卷

关键词：

6xxx automotive sheet alloys; stretch formability; pre-ageing; composition; SI;

D O I：

10.4028/www.scientific.net/MSF.941.955

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the effect of Mg/Si ratio, Cu content and/or pre-ageing treatment (e.g. 100 degrees C for 2 h and/or 200 degrees C for 20 s) on the stretch formability of 6xxx alloys was investigated through their influence on the work hardening and strain-rate hardening behaviour using tensile testing and forming limit diagram tests. The results showed that a high Mg/Si ratio, a low Cu content and/or the employment of pre-ageing could deteriorate the stretch formability due to the decrease in work hardening and/or strain rate hardening capabilities. Moreover, the stretch formability was observed to have an opposite correlation with the paint-bake response of the alloys studied.

引用

页码：955 / 960

页数：6

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