Interfacial features of TiAl alloy/316L stainless steel joint brazed with Zr−Cu−Ni−Al amorphous filler metal

In this paper, dissimilar joining of 316L stainless steel to low carbon steel was carried out using gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW). Samples were welded using AWS: ER309L welding electrode for GMAW and AWS: ER316L welding electrode for GTAW process. Determination of mechanical properties and material characterization on the welded joints were carried out using the Instron tensile test machine and an optical microscope respectively. The cross section area of the welded joint consists of three main areas namely the base metal (BM), heat affected zone (HAZ), and weld metal (WM). It was found that, the yield and tensile strengths of welded samples using ER316L filler metal were slightly higher than the welded sample using ER309L welding electrode. All welded samples fractured at low carbon steel base metal indicating that the regions of ER316L stainless steel base metal, ER316L filler metal and heat affected zone (HAZ) have a higher strength than low carbon steel base metal. It was also found that ER316L welding electrode was the best filler to be used for welding two dissimilar metals between carbon and stainless steel.

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Failure analysis of fillet welds with premature corrosion in 316L stainless steel slide gates using constitution diagrams

Revista UIS Ingenierías ◽

10.18273/revuin.v19n2-2020016 ◽

2020 ◽

Vol 19 (2) ◽

pp. 141-148

Author(s):

Carlos Mauricio Franco-Rendón ◽

Henry León-Henao ◽

Álvaro Diego Bedoya-Zapata ◽

Juan Felipe Santa ◽

Jorge Enrique Giraldo B.

Keyword(s):

Stainless Steel ◽

Failure Analysis ◽

316L Stainless Steel ◽

Filler Metal ◽

Optical Emission ◽

Localized Corrosion ◽

Fillet Welds ◽

Emission Spectrometry ◽

Metallographic Examination ◽

Ferrite Number

The service environment of the slide gates may cause localized corrosion at welds. In this work, a failure analysis was conducted to determine the causes of the prematurecorrosion of the fillet welds before the commissioning. According to the contractor, the slide gates were manufactured in ASTM A240 Type 316L stainless steel and welded with GMAW using an ER316LSi filler metal. Test samples of the fillet weld metals were extracted from gates after a preliminary visual inspection. The samples were analyzed using ferrite number measurements, Optical Emission Spectrometry, chemical analysis, metallographic examination and Scanning Electron Microscopy with microanalysis. The analysis of results using the Schaeffler and WRC-92 constitution diagrams showed that the estimatedchemical composition of the filler metal differs with the filler metal specified in the WPS suggesting that an incorrect carbon steel filler metal was used during the construction of the gates

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Physical Characteristics of Keyhole in 316L Stainless Steel Joint During an Autogenous Pulsed Laser Beam Welding

Springer Proceedings in Materials - Advances in Materials and Manufacturing Engineering ◽

10.1007/978-981-15-6267-9_59 ◽

2020 ◽

pp. 519-531

Author(s):

A. Jayanthi ◽

K. Venkataramanan ◽

K. Suresh Kumar

Keyword(s):

Stainless Steel ◽

Laser Beam ◽

316L Stainless Steel ◽

Laser Beam Welding ◽

Pulsed Laser ◽

Physical Characteristics ◽

Steel Joint ◽

Pulsed Laser Beam Welding ◽

Pulsed Laser Beam

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Microstructure and Shear Strength in Brazing Joint of Mo-Cu Composite with 304 Stainless Steel by Ni-Cr-P Filler Metal

High Temperature Materials and Processes ◽

10.1515/htmp-2014-0048 ◽

2015 ◽

Vol 34 (4) ◽

Cited By ~ 1

Author(s):

Juan Wang ◽

Jiteng Wang ◽

Yajiang Li ◽

Deshuang Zheng

Keyword(s):

Solid Solution ◽

Stainless Steel ◽

Shear Strength ◽

Electron Microscope ◽

Filler Metal ◽

Energy Dispersive Spectrometer ◽

Eutectic Structure ◽

304 Stainless Steel ◽

Steel Joint ◽

Scanning Electron

AbstractThe brazing of Mo-Cu composite and 304 stainless steel was carried out in vacuum with Ni-Cr-P filler metal at 980 °C for 20 min. Microstructure in Mo-Cu/304 stainless steel joint was investigated by field-emission scanning electron microscope (FE-SEM) with energy dispersive spectrometer (EDS) and shear strength was measured by shearing test. The results indicate that shear strength of the Mo-Cu/304 stainless steel joint is about 155 MPa. There forms eutectic structure of γ-Ni solid solution with Ni

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