Examining the Critical Transformation Temperatures in Martensitic Stainless Steel Castings

Understanding martensitic stainless steels' critical transformation temperatures (A1, A3, Ms and Mf) is crucial for optimizing heat treatment and mechanical properties. This study employs dilatometry to determine phase transformation temperatures during continuous cooling and heating of cast martensitic grades with varied compositions. Furthermore, optical and scanning electron microscopy are used to analyze microstructural changes and identify factors influencing these temperatures. The goal is to establish a relationship between the transformation temperatures and heat treatment cycles, translating to certain desired mechanical properties, hence providing a comprehensive methodology for improving the heat treatment process of cast martensitic stainless steels.

Authors:

Ugochukwu Agbedo | Missouri University of Science and Technology
 

Mario Buchely | Missouri University of Science and Technology
 

Caelan Kennedy | Steel Founders’ Society of America
 

Session Chairs:

Caelan Kennedy | Steel Founders Society of America
 

Andy Pinskey | Holland Manufacturing Corp.