Optimum properties of quenching and partitioning steels achieved by balancing fraction and stability of retained austenite

Optimum properties of quenching and partitioning steels achieved by balancing fraction and stability of retained austenite

It is found that the optimum mechanical properties of Q&P steels are not necessarily obtained when the volume fraction of retained austenite is maximum, but they can be achieved by an optimum balance between the fraction and stability of retained austenite. The present work proposes a new micros...

Full description

Saved in:
Bibliographic Details
Published in:Scripta materialia Vol. 150; pp. 1 - 6
Main Authors: Liu, L., He, B.B., Cheng, G.J., Yen, H.W., Huang, M.X.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-06-2018
Subjects:
Austenite stability
Fine martensite lath
Q&P steel
Quenching temperature
TRIP effect
Q&P steel
Austenite stability
TRIP effect
Fine martensite lath
Quenching temperature
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is found that the optimum mechanical properties of Q&P steels are not necessarily obtained when the volume fraction of retained austenite is maximum, but they can be achieved by an optimum balance between the fraction and stability of retained austenite. The present work proposes a new microstructurally-based method to design a proper quenching temperature to obtain an optimum microstructure comprising fine martensite laths and alternatively-distributed thin austenite films, which has the optimum balance between fraction and stability of retained austenite, leading to the optimum mechanical properties of Q&P steels. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2018.02.035