What is it about?
Comparison of solid and metal cored fillers in welding of Ti-Nb 800 MPa microalloyed steel
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Why is it important?
Use of P-GMAW for welding HSLA steels is becoming popular and many fabricators are switching to use P-GMAW instead of conventional GMAW. To the best of our knowledge, there is no investigation reporting the benefit of metal cored wires during P-GMAW of Ti-Nb microalloyed 800MPa steels. Here, we try to compare the results of P-GMAW using metal cored wires with P-GMAW using solid wires for welding Ti-Nb microalloyed 800 grade steels.
Perspectives
Ti-Nb microalloyed 800 MPa steels are an important group of advanced high strength steels being developed for automobile applications. One requirement for practical application is the development of a reliable welding process. P-GMAW technique with synergic control and metallic cored filler wires are the advances in the domain of GMAW technique. These are used in welding Ti-Nb steel. The results indicate that use of metal cored wire increased penetration, reduces spatter marginally reduces HAZ width, increases weld hardness, and UTS is marginally higher. In both samples fracture took place in the HAZ, indicating it is the weakest domain in the welded system. Overall results indicate that the use of metal cored wire is beneficial compared to the solid wire during P-GMAW.
Merbin john
NATIONAL INSTITUTE OF TECHNOLOGY, SURATHKAL
Read the Original
This page is a summary of: Effect of employing metal cored filler wire for single V butt joint welding of Ti-Nb microalloyed 800MPa steels, January 2020, American Institute of Physics,
DOI: 10.1063/5.0006815.
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