About calculating the characteristics of the martensite–austenite constituent

The solid region of a linepipe steel which is influenced by the heat of welding often contains small islands which are mixtures of untempered martensite and austenite. These are sometimes referred to as the “martensite–austenite constituents” and are said to represent “local brittle zones”. The purpose of this paper is to show how the development of these regions might be estimated using phase transformation theory and to examine critically whether they represent local brittle zones. (AU) Copyright © 2013 Companhia Brasileira de Metalurgia e Mineração (CBMM) All Rights Reserved.