Effect of Friction Stir Welding on the Microstructure and Mechanical Properties of Super Duplex Stainless Steel

被引：4
|
作者：
Ahl Sarmadi, Mohammad [1 ]
Shamanian, Morteza [1 ]
Edris, Hossein [1 ]
Behjat, Amir [1 ]
Mohtadi-Bonab, M. A. [2 ]
Szpunar, Jerzy [3 ]
机构：
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
[2] Univ Bonab, Dept Mech Engn, Bonab, Iran
[3] Univ Saskatchewan, Dept Mech Engn, Saskatoon, SK S7N5A9, Canada
来源：
METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS | 2021年 / 10卷 / 03期
关键词：
Super duplex stainless steel; Friction stir welding; Microstructure; Mechanical properties; PROCESS MODEL; RESISTANCE;
D O I：
10.1007/s13632-021-00754-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The aim of this study is to investigate the microstructure and mechanical properties of friction stir welded super duplex stainless steels. In this regard, UNS S32750 steel is joined by friction stir welding (FSW) method. The tool used in this research is made of WC with 16-mm shoulder diameter and 5-mm pin diameter. Microstructural investigations are carried out by optical microscope and scanning electron microscope. In addition, in order to evaluate the mechanical properties, microhardness and tensile test are utilized. The results show that grain refinement occurs in the stir zone (SZ) during the FSW process. Image analysis reveals that the volume fraction of ferrite in the SZ was about 60%. Microhardness test shows that the average hardness value of base metal is 285 Vickers, however, in the stir zone, the hardness value is increased up to 360 Vickers.
引用
收藏
页码：383 / 391
页数：9
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