Influence of Cooling Rate After Destabilization on Microstructure and Hardness of a High-Cr Cast Iron

期刊论文
出版模式：

开放获取
发表日期：

2024年4月8日

查看全文

Charline Le Nué,
Santiago Corujeira Gallo,
Alireza Vahid,
Mehdi Taherishargh,
Hooyar Attar,
Daniel Fabijanic,
Matthew Barnett

摘要

This study investigates the impact of cooling rate after destabilization at 980 °C on the microstructure of 23 wt pct Cr–2.7wt pct C hypoeutectic high-Cr cast iron. Lowering cooling rate intensifies the secondary carbides formation, depleting carbon in austenite. This raises the martensite start temperature and lowers the bulk hardness. We thereby provide evidence explaining the origin of the sensitivity to cooling rate in high-Cr cast irons.