Simulation Study on Ductile Cast Iron Welding by Austenitic Filler Metal

概要

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The purpose of this work is to simulate an austenitic welded zone, using ductile cast iron as a base metal and alloying different concentrations of copper and nickel. Simultaneously the aim was set to use the least possible nickel to develop a cheaper filler metal with good machinability and the least possibility to form cracks in welding. Data on carbides percentage, hardness, solidification temperature, and isobaric thermal expansibility are collected and reported. The obtained results show the possibility of developing a new filler metal with only 20% nickel and 10% copper for a typical dilution rate of 30%, without loss of machinability and with the less probability of forming cracks, than the conventional filler metal. This is a remarkable reduction of nickel compared with the recently developed 55% nickel commercial filler metal.
社団法人溶接学会の論文
1984-10-01