Effect of GTAW and GMAW-STT Processes on Mechanical Properties and Microstructure of Dissimilar Pipe Joining between ASTM A106 Gr.B and ASTM A312 TP316/316L in 6G Position

Thanawat Chanasavasook; Pisak Lertvijitpun; Thammaporn Thublaor

doi:10.4028/p-dS5OcF

Paper Titles

Effect of GTAW and GMAW-STT Processes on Mechanical Properties and Microstructure of Dissimilar Pipe Joining between ASTM A106 Gr.B and ASTM A312 TP316/316L in 6G Position
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Selective Laser Melting of Titanium Alloys: Simulation of Scanning Speed Effects with High Layer Thickness
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Development of a Nonlinear Forming Limit Curve of an Advanced High-Strength Steel (DP440) with Applicability to Multi-Step Forming Processes
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Microstructure and Hardness Properties of Oxide Dispersion Strengthened Fe-18Cr Ferritic Steels Reinforced with Nano-Alumina
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Analysis of Experimental Studies of Titanium Alloy
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Research of the Behavior of Composite Panels under Impact Loads and the Creation of Reliable Protection of Armored Vehicles
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HomeMaterials Science ForumMaterials Science Forum Vol. 1141Effect of GTAW and GMAW-STT Processes on...

Effect of GTAW and GMAW-STT Processes on Mechanical Properties and Microstructure of Dissimilar Pipe Joining between ASTM A106 Gr.B and ASTM A312 TP316/316L in 6G Position

Abstract:

This research used an ER309LSi filler material in both 6G positions in the gas metal arc welding-surface tension transfer (GMAW-STT) process in comparison to the gas tungsten arc welding (GTAW) process. The goal of this research was to study the mechanical characteristics and microstructure of dissimilar pipe joining between ASTM A312 Gr. TP316/316L and ASTM A106 Gr.B. Tensile, bending, and Vickers hardness tests, as well as nondestructive methods, were used to test the weldment in accordance with ASME BPVC IX-2023. The experiment determined that both GMAW-STT and GTAW weldments produced non-destructive and mechanical testing results that met accepted standards. The microstructures of carbon steel are ferrite and Pearlite, stainless steel shows the presence of twin bands in the austenite matrix. It shows that the GMAW-STT process can be more productive than conventional GTAW. Furthermore, it can generate enough delta-ferrite content to prevent solidification cracking in the weld metal.

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Periodical:

Materials Science Forum (Volume 1141)

Pages:

3-10

DOI:

https://doi.org/10.4028/p-dS5OcF

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Online since:

December 2024

Authors:

Thanawat Chanasavasook, Pisak Lertvijitpun, Thammaporn Thublaor*

Keywords:

Delta-Ferrite, Dissimilar Joining, GMAW-STT, GTAW

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