Microstructure and mechanical properties of friction-stir welded St52 steel joints

被引：59
作者：
Kucukomeroglu, Tevfik [1 ]
Aktarer, Semih M. [2 ]
Ipekoglu, Guven [3 ]
Cam, Gurel [3 ]
机构：
[1] Karadeniz Tech Univ, Dept Mech Engn, TR-61080 Trabzon, Turkey
[2] Recep Tayyip Erdogan Univ, Dept Automot Technol, TR-53100 Rize, Turkey
[3] Iskenderun Tech Univ, Dept Mech Engn, TR-31200 Antakya, Turkey
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2018年 / 25卷 / 12期
关键词：
friction-stir welding; St52; steel; microstructure; mechanical properties; LASER; WELDABILITY; ALLOYS;
D O I：
10.1007/s12613-018-1700-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this work is to investigate the mechanical properties and microstructures of friction-stir welded (FSWed) St52 structural steel joints. In this study, St52 steel plates with a thickness of 4 mm were butt-welded by friction-stir welding (FSW) using a tungsten carbide tool having a conical pin. The microstructure of the welded zone consists of equiaxed fine ferrite, grain boundary ferrite, Widmanstatten ferrite, and aggregates of ferrite + cementite. The microhardness measurements showed that the hardness of the welded zone was significantly higher than that of the base metal. The FSWed St52 joint exhibited a significant strength overmatching in the weld region and a strength performance similar to or slightly higher than that of the base plate.
引用
收藏
页码：1457 / 1464
页数：8
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