Keyhole gas tungsten arc welding of commercially pure zirconium

Authors: Lathabai, S.; Jarvis, B. L.; Barton, K. J.

Source: Science and Technology of Welding & Joining, Volume 13, Number 6, September 2008 , pp. 573-581(9)

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Abstract:

Keyhole gas tungsten arc welding (K-GTAW), a novel variant of GTAW, has been used to join commercially pure zirconium. The process enables single pass welding of 6˙35 mm thick zirconium using conventional GTAW equipment and a high current torch, without expensive filler metal addition or joint preparation. The mechanical properties and the microstructure of the resulting joints were characterised. It is concluded that the K-GTAW process, with its high productivity combined with low capital investment requirements, can be successfully used for welding relatively heavy section zirconium.

Keywords: KEYHOLE WELDING; MECHANICAL PROPERTIES; ZIRCONIUM; MICROSTRUCTURES; GAS TUNGSTEN ARC WELDING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/136217108X329296

Publication date: 2008-09-01

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