Influence of Cryogenic Treatment on Microstructure and Properties Improvement of Die Steel

• 作者: Lei Shi Shangtan Liu Wei Qu Xiaochun Wu Yiwen Wu
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 工学
• 关键词: Die Steel CRYOGENIC Treatment RETAINED AUSTENITE The Second CARBIDE ANTIWEAR Ability
• 年，卷（期）: clkxyhxgcyw_2015,（9）
• 页码范围: 37-46
• 页数: 10页
• 分类号: TG14

摘要

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.