Microstructure development of quenching and partitioning-processed martensitic stainless steels with different manganese content

Journal article (2024)

Authors

G. Li Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
C. Kwakernaak Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
Ali Smith Rina Consulting - Centro Sviluppo Materiali
M. Muratori Acerinox Europa SAU
Y. Gonzalez Garcia Team Yaiza Gonzalez Garcia - Mechanical, Maritime and Materials Engineering
Maria Jesus Santofimia Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
Research Group
Team Maria Santofimia Navarro (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2024

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Maria Santofimia Navarro

Abstract

This work presents an investigation of the microstructure development during the application of the quenching and partitioning (Q&P) process to two stainless steels with different Mn content. The results are compared with calculations based on the constrained carbon equilibrium theory, paying special attention to the presence of reactions competing for the carbon available for partitioning and to the effect of alloying element segregation. Results show that chromium carbides must be considered when accounting for the carbon available for austenite stabilisation. Moreover, manganese/chromium segregation bands play an important role in the microstructure development, particularly in martensite formation, with important consequences in the microstructure development during the following processing steps.

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