Microstructure and tensile properties of AISI 410 stainless steel welded TIG method

Abstract

In this study, the weldabilities, microstructures and tensile properties of AISI 410
stainless steel joints fabrication by tungsten inert gas (TIG) welding method were
investigated. TIG welding was carried out on steels by using welding wire ER 410 (AWS
A5.9) 2.8 mm in diameter. Tensile test results showed that while tensile and yield strength
increased, the elongation value decreased significantly. The yield strength and tensile
strength were measured as 619 and 801 MPa after welding process, respectively. In
addition, the failure location occurred without any significant cross-sectional narrowing.
Microstructure investigations have been carried out using optical microscopy and
Scanning Electron Microscopy (SEM). The obtained results indicated that the
microstructure of weld metal region had a dual phase such as martensite and ferrite.