Enhanced Low-Temperature Tensile Properties of Fe-14Cr-(4∼9)Ni Weld Metal by Retained Austenite

Hai QIU; Linning WANG; Hong ZUO; Goro ARAKANE; Fuxing YIN; Kazuo HIRAOKA

doi:10.2207/qjjws.30.171

Hai QIU, Linning WANG, Hong ZUO, Goro ARAKANE, Fuxing YIN, Kazuo HIRAOKA

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Keywords: weld metal, tensile property, retained austenite, strain-induced martensite transformation, transformation-induced plasticity

JOURNAL FREE ACCESS

2012 Volume 30 Issue 2 Pages 171-179

DOI https://doi.org/10.2207/qjjws.30.171

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Abstract

Retained austenite affects the low-temperature tensile properties of Fe-14Cr-(4∼9)Ni weld metal through strain-induced martensite transformation. The strengthening process caused by strain-induced martensite transformation is evaluated in terms of work-hardening-rate. By means of this result, the effect of retained austenite on elongation is interpreted. Strength-ductility balance is found to be strongly influenced by retained austenite at low temperature.

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