The aim of this work is to investigate the influence of chemical compositions in austenitic metals such as chromium equivalent, nickel equivalent and so on, on the solidification cracking susceptibility. In order to change the chemical composition of specimen systematically within austenite single phase region in Schaeffler diagram, the specimens were fabricated using several base materials and filler wires of Ni-based alloy and stainless steel. Distribution of the solidification cracking susceptibility in Schaeffler diagram could be evaluated quantitatively by measuring brittle temperature range (BTR) and crack length. The influence of niobium content on the cracking susceptibility is quite significant due to low partition coefficient. Thus, the susceptibility distribution in Schaeffler diagram could be identified by classifying according to niobium content. The distribution showed different tendency depending on the content.
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