TITLE:
Influence of Cryogenic Treatment on Microstructure and Properties Improvement of Die Steel
AUTHORS:
Shangtan Liu, Xiaochun Wu, Lei Shi, Yiwen Wu, Wei Qu
KEYWORDS:
Die Steel, Cryogenic Treatment, Retained Austenite, The Second Carbide, Antiwear Ability
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.3 No.9,
September
16,
2015
ABSTRACT: Cryogenic treatment has been increasingly applied to enhance the hardness, antiwear ability and
fatigue performance of die steel. On the basis of reading a large number of research papers and
references across the world, the author makes a detailed analysis and brief summary of the influence
of cryogenic treatment on microstructure after quenching process or quenching plus tempering
process, on first and second carbides, on content of retained austenite, on surface hardness,
on mechanical properties and antiwear ability of die steels. It’s proved that cryogenic treatment
on die steel significantly improves its hardness, antiwear capacity and service life. It’s the cryogenic
process to make die steel have higher hardness, better antiwear ability, better ductility and
longer service life because cryogenic process actually has a good influence on die steel of its microstructure,
retained austenite volume and amount and size of the second carbide.