Influences of pin profile on the mechanical and microstructural behaviors in dissimilar friction stir welded AA6082-AA7075 butt Joint

被引：67

作者：

Aval, Hamed Jamshidi ^{[1
]}

机构：

[1] Babol Univ Technol, Dept Mech Engn, Babol Sar, Iran

来源：

MATERIALS & DESIGN | 2015年 / 67卷

关键词：

Dissimilar friction stir welding; Tool geometrical parameters; Microstructure; Mechanical properties; ALUMINUM-ALLOYS; PRECIPITATION;

D O I：

10.1016/j.matdes.2014.11.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigates the effect of tool pin profile and post weld heat treatment on the mechanical and microstructural aspects of friction stir welded dissimilar precipitation-hardenable aluminum alloys between 6xxx (Al-Mg-Si) and 7xxx (Al-Zn-Mg). It was found that the tool with a conical probe with three grooves produces higher temperatures than the tool with a square frustum probe. The mixture of materials in the weld nugget of joints welded by the tool with the square frustum probe was more uniform. Of the natural aging times studied, the stir zone of all welds showed the highest kinetics of microhardness and strength recovery; its effect increased considerably in the heat input per unit length decreased. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：413 / 421

页数：9

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