先进高强度QP/QPT钢的研究现状及展望  

Research Status and Progress of Advanced High Strength QP/QPT Steels

作　　者：娄航宇 石增敏 梁静宇 王杨洋 LOU Hangyu;SHI Zengmin;LIANG Jingyu;WANG Yangyang(College of Materials and Chemical Engineering,China Three Gorges University,Yichang 443000,China;College of Mechanical and Power Engineering,China Three Gorges University,Yichang 443000,China)

机构地区：[1]三峡大学材料与化工学院,湖北宜昌443000 [2]三峡大学机械与动力学院,湖北宜昌443000

出　　处：《热加工工艺》2020年第10期11-15,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51201093)。

摘　　要：QP/QPT工艺旨在通过淬火配分工艺来提高超高强度钢的塑性和强度。该工艺的关键是获得较高残余奥氏体体积分数的马奥两相组织,并通过弥散碳化物进一步提高强度和塑性。本文主要介绍了QP/QPT工艺的特点、获得高强塑积的原理和方法、合金元素的作用,并讨论了氢脆的产生和提高抗氢脆能力的机理,旨在获得高强塑积并为其工业化应用提供参考。The QP/QPT process is designed to improve the plasticity and strength of ultra-high strength steel by quenching and partitioning process. The key to this process is to obtain dual phase microstructure of martensite and retained austenite high volume fraction with and to further enhance the strength and plasticity by dispersing carbides. This paper mainly introduces the characteristics of QP/QPT process, the principle and method of obtaining high the product of tensile strength and elongation, the function of alloying elements. The generation of hydrogen embrittlement and the mechanism of improving hydrogen embrittlement resistance are also discussed in order to achieve high strength plastic product, which can provide theoretical basis for industrial application.

关 键 词：QP/QPT工艺 残余奥氏体 氢脆 

分 类 号：TG161[金属学及工艺—热处理] TG142[金属学及工艺—金属学]