Characterisation of Intermetallic Phases in Fusion Welded Commercially Pure Titanium and Stainless Steel 304

Metals

Masami Mizutani¹  Wojciech Zbigniew Misiolek¹  Michael Kracum²  Mona Aziziderouei²  Timotius Pasang³  Osamu Kamiya³  Stevin Snellius Pramana⁴ 

[1] Department of Materials Science and Engineering, Lehigh University, 5 East Packer Avenue, Bethlehem, PA 18015, USA;;Loewy Institute &School of Engineering, Computer and Mathematical Sciences, Auckland University of Technology, Auckland 1020, New Zealand;School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;

关键词: laser beam welding;    gas tungsten arc welding;    commercially pure titanium;    stainless steel 304;    phase diagram;    hardness;   

DOI  :  10.3390/met8110863

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown