Experimental and Theoretical Evaluation of Hot Cracking in the Super Austenitic Stainless Steel Weld Metal during Autogeneous Welding

The main idea of this work is to compare the dependability of the theoretical and experimental evaluation of the hot cracking susceptibility of super austenitic stainless steel weld metal. In this juncture, the hot cracking susceptibility of super austenitic stainless steel weld metal is explained through a theoretical procedure and an experimental procedure. In a theoretical evaluation, the hot cracking susceptibility of a given super austenitic stainless steel is explained in terms of Cr_eq/Ni_eq, level of impurities (S+P%), ferrite number FN and microstructure. Another way to measure the hot cracking susceptibility of super austenitic stainless steel is through experimental tests by means of Houldcroft hot cracking test. The results of the theoretical analysis agreed with results achieved from the Houldcroft test. Therefore, the outcome obtained by theoretical assessment and experimental assessment indicate that the experimental and theoretical evaluation are consistent with one another and are both dependable.