2013•Journal of Chinese Society of Power EngineeringRequires access
Mechanical Properties and Microstructures of Dissimilar Steel Welded Joints Between Domestic Steel S30432 and Steel T92
Liang Ju
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Abstract
Mechanical properties,microstructures and hardness distribution of the dissimilar steel welded joint between martensitic steel T92 and domestic austenite steel S30432 were investigated and compared with those of the dissimilar welded joint between steel T92 and imported steel S30432,while the influence of steel T92 composition on microstructure of the welded joint analyzed.Results show that both the two joints have equivalent mechanical properties,similar hardness distribution,but the peak hardness value in the T92 side fusion zone of the former joint is slightly lower than that of the latter joint.Furthermore,block ferrite bands can be observed in the steel T92 side fusion zone,and the Creq variation of the steel T92 affects the content and size of the formed ferrite blocks.