Comparative Study of Hot Cracking Susceptibility of AISI 347 Austenitic Stainless Steel (ASS) using Acidic and Basic Coated Filler Material
Authors
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Metallurgical Engineering Department, The M.S.University of Baroda ,IN
Vishvesh J. Badheka -
Fusion Resources, 925/2/8, GIDC Makapura, Vadodara ,INS. K. Agrawal
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Anup Engineering, Ahmedabad ,INUmang Parikh
Abstract
Hot cracking refers to cracking that occurs during welding, casting or hot working at temperatures close to the melting point of the materials. Hot cracking susceptibility of austenitic stainless steel is a problem arising during welding of austenitic stainless steels, particularly in fully austenitic and stabilized compositions. Hot cracking in stainless steel welds is caused by low-melting eutectics containing impurities such as S, P and alloy elements such as Ti, Nb. In stabilized stainless steels, Ti and Nb react with S, N and C to form low melting eutectics. In austenitic stainless steels, segregation plays an overwhelming role in determining cracking susceptibility. Total crack length (TCL), has been used extensively as hot cracking parameter. [1,2]
In the present investigation, an attempt has been made to study hot cracking susceptibility of stabilized ASS on transvarestraint test unit, with acidic and basic coated electrodes.
Experiment, shows that acidic and basic coated electrodes both are more or less equally susceptible to hot.
