Study on the dynamic and static softening phenomena in Al-6Mg alloy during two-stage deformation through interrupted hot compression test

被引：36

作者：

Pouraliakbar, Hesam ^{[1
]}

Pakbaz, Mehdi ^{[2
]}

Firooz, Soheil ^{[3
,4
]}

Jandaghi, Mohammad Reza ^{[1
]}

Khalaj, Gholamreza ^{[5
]}

机构：

[1] WorldTech Sci Res Ctr, Dept Adv Mat, Tehran, Iran

[2] Islamic Azad Univ, Sci & Res Branch, Dept Mat Engn, Tehran, Iran

[3] Sharif Univ Technol, Dept Aerosp Engn, Tehran, Iran

[4] Sharif Univ Technol, Sch Mech Engn, Tehran, Iran

[5] Islamic Azad Univ, Saveh Branch, Dept Mat Engn, Saveh, Iran

来源：

MEASUREMENT | 2016年 / 77卷

关键词：

Al-6Mg alloy; Dynamic softening; Hot deformation; Interrupted deformation; Compression test; Flow stress; ALUMINUM ALLOY-AA2024; HOMOGENIZATION; WORKABILITY;

D O I：

10.1016/j.measurement.2015.08.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamic and static softening phenomena in Al-6Mg alloy were studied through interrupted two-stage hot compression test performed isothermally at 480 degrees C and strain rate range of 0.001-0.1 s (1). The interruptions of 29 and 90 s were considered when the true strain reached 0.5. It was concluded that the effect of static softening on the flow stress was not highlighted by extending the interruption at a constant strain rate. Also, it was exhibited that softening rate highly enhanced with the strain rate decrement at a constant time. Moreover, the static and dynamic recrystallization was revealed as the dominant softening mechanisms at low and high strain rates, respectively. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：50 / 53

页数：4

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