Microstructure and mechanical properties of double pulse TIG welded super austenitic stainless steel butt joints

被引：0
|
作者：
Kumar, Philomin R. John Raj [1 ]
Baskaran, Adimoolam [1 ]
Thirumalaikumarasamy, Duraisamy [1 ]
Sonar, Tushar [2 ,3 ]
Ivanov, Mikhail [2 ,3 ]
Pavendhan, Rajangam [4 ]
机构：
[1] Annamalai Univ, Dept Mfg Engn, Chidambaram 608002, Tamil Nadu, India
[2] Natl Res Univ, South Ural State Univ, Inst Engn & Technol, Dept Welding Engn, Chelyabinsk 454080, Russia
[3] Nat Res Univ, South Ural State Univ, Inst Engn & Technol, Dept Sci & Innovat Act, Chelyabinsk 454080, Russia
[4] ARM Coll Engn & Technol, Dept Mech Engn, Chennai 603209, Tamil Nadu, India
来源：
MATERIALS TESTING | 2024年 / 66卷 / 09期
关键词：
super austenitic stainless steel; double pulse tig welding; microstructure; mechanical properties; fractography; MAGNETIC ARC OSCILLATION; AA2219; ALUMINUM-ALLOY; TENSILE PROPERTIES; PROCESS PARAMETERS; GRAIN-REFINEMENT; WELDING PROCESS; DUPLEX; SUSCEPTIBILITY; OPTIMIZATION; BEHAVIOR;
D O I：
10.1515/mt-2024-0081
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The primary objective of this study is to analyze the effect of double pulse tungsten inert gas (DP-TIG) welding on microstructure and mechanical properties of super austenitic SMO 254 stainless steel joints. The butt joints of SMO 254 steel were made using ERNiCrMo-10 filler metal. The microstructural characteristics of different regions of joint were analyzed using optical microscope, scanning electron microscope, X-ray diffraction analysis, and energy dispersive spectroscopy. The micrograph of weld metal showed finer equiaxed grains at the middle of weld metal and columnar grains near the weld interface. The SMO 254 steel joints showed the tensile strength of 636 MPa, ductility of 35 %, and impact toughness of 52 J. The fractured surfaces showed ductile mode of failure of joints.
引用
收藏
页码：1379 / 1387
页数：9
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