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Characterisation of intermetallic phases in fusion welded commercially pure titanium and stainless steel 304

Lookup NU author(s): Dr Stevin PramanaORCiD

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© 2018 by the authors. Licensee MDPI, Basel, Switzerland. A series of trials to fusion weld commercially pure titanium (CPTi) to stainless steel 304 (SS304) have been conducted using laser beam welding (LBW) and gas tungsten arc welding (GTAW). Neither technique produced adequate weld joints with LBW showing a more promising result, while GTAW yielded separation of the workpieces immediately after welding. Cracking and fracturing took place mainly on the SS304 side, which was explained by the differences in the materials’ thermal properties. Various intermetallic phases formed during welding that were identified using energy dispersive X-ray spectroscopy (EDS) and electron backscattered diffraction (EBSD) technique and were compared with an isothermal ternary phase diagram of Fe-Cr-Ti. Their corresponding hardness values are reported and correlated with alloy compositions.

Publication metadata

Author(s): Pasang T, Pramana SS, Kracum M, Misiolek WZ, Aziziderouei M, Mizutani M, Kamiya O

Publication type: Article

Publication status: Published

Journal: Metals

Year: 2018

Volume: 8

Issue: 11

Online publication date: 24/10/2018

Acceptance date: 19/10/2018

Date deposited: 14/11/2018

ISSN (electronic): 2075-4701

Publisher: MDPI AG

URL: https://doi.org/10.3390/met8110863

DOI: 10.3390/met8110863

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