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Online ISSN : 1884-0329
Print ISSN : 1880-9928
ISSN-L : 1880-9928
Study on Application of Undermatched Welds for UTS 490N/mm2 Class Steels
(Part 1 : Case of Using GTAW Process)
Akira UMEKUIVIKoichi MASUBUCHI
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JOURNALS FREE ACCESS

1999 Volume 6 Issue 24 Pages 123-132

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Abstract

This paper presents experimental and numerical studies on the effects of undermatched welds with pure iron welding wires using GTAW process on 490N/mm2 class steels. Undermatched welds prevent cold cracking without preheating, and allow the use of short bead welding without reducing fracture toughness of base metals and welds, then they prevent brittle fracture under high strain rate like seismic load. The results of fatigue tests of welded joints showed that undermatched welds reduce stress concentrations and improve fatigue strength.

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© Japanese Society of Steel Construction
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