A comparative evaluation of gas tungsten and shielded metal arc welds of a “ferritic” stainless steel

The effect of welding process shielding gas and the addition of grain refining elements on the weld zone tensile properties of a ferritic stainless steel conforming to AISI 430 has been investigated. Gas tungsten arc welds exhibiting equi-axed grain morphology had superior tensile and yield strength...

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Bibliographic Details
Published inJournal of materials processing technology Vol. 94; no. 2; pp. 133 - 140
Main Authors Mohandas, T, Madhusudhan Reddy, G, Naveed, Mohammad
Format Journal Article
LanguageEnglish
Published Elsevier B.V 29.09.1999
Subjects
Ferritic stainless steel
Gas tungsten arc
Shielded metal arc
Ferritic stainless steel
Gas tungsten arc
Shielded metal arc
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Summary:The effect of welding process shielding gas and the addition of grain refining elements on the weld zone tensile properties of a ferritic stainless steel conforming to AISI 430 has been investigated. Gas tungsten arc welds exhibiting equi-axed grain morphology had superior tensile and yield strength compared to shielded metal arc welds. The tensile ductility of gas tungsten arc welds was also on an average marginally greater than that of shielded metal arc welds. Welds in general showed low ductility compared to that of the base metal. The addition of titanium and copper led to improved strength over that of the base alloy. The observed properties could be correlated to the austenite content and the fracture morphology.
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ISSN:0924-0136
DOI:10.1016/S0924-0136(99)00092-8