孪生诱发塑性钢力学性能的研究进展  

Research progress of mechanical properties of twinning induced plasticity steel

作　　者：郑志斌 龙骏 王玉辉[2] 杨浩坤 ZHENG Zhibin;LONG Jun;WANG Yuhui;YANG Haokun(Institute of New Materials,Guangdong Academy of Sciences,Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application,Guangzhou 510650,Guangdong,China;National Engineering Research Center for Equipment and Technology of Cold Rolled Strip,Yanshan University,Qinhuangdao 066004,Hebei,China;Smart Manufacturing Division,Hong Kong Productivity Council(HKPC),Hong Kong 999077,China)

机构地区：[1]广东省科学院新材料研究所广东省金属强韧化技术与应用重点实验室,广东广州510650 [2]燕山大学国家冷轧板带装备及工艺工程技术中心,河北秦皇岛066004 [3]香港生产力促进局智能制造部,中国香港999077

出　　处：《钢铁研究学报》2023年第2期115-130,共16页Journal of Iron and Steel Research

基　　金：国家重点研发计划资助项目(2021YFB3701704);广东省科学院打造综合产业技术创新中心行动专项资助项目(2022GDASZH-2022010103);广东省国际科技合作项目(2021A0505030051);香港创新及科技基金资助项目(ITP-020-21AP,ITP-041-20AP);国家自然科学基金资助项目(51871194);河北省自然科学基金-创新研究群体项目(E2021203011)。

摘　　要：随着“碳达峰”、“碳中和”的目标提出,汽车、航空、航天、高铁等诸多工业领域对钢铁结构件的安全和可靠性要求越发严苛。因此,钢铁结构材料需要满足高强度、高塑性以及更优异的综合力学性能,例如耐疲劳、耐冲击以及加工硬化能力等方面来进行更深入的研究。进入21世纪,孪生诱发塑性钢,即TWIP钢的研究逐渐展开。该材料具有单相奥氏体结构,其在变形过程中会形成大量的形变孪晶,对晶粒进行分割,表现出动态的Hall-Petch效应,可极大提高金属材料的加工硬化能力,并具有较高的均匀伸长率和抗拉强度,因而具有潜在的工业应用价值。根据TWIP钢的力学性能特点,系统地介绍了TWIP钢的加工硬化率、应变速率敏感性、变形温度敏感性、疲劳裂纹扩展以及抗冲击性能的研究进展,以期为高强钢开发提供新的思路和理论支持。With the goal of "carbon peaking" and "carbon neutrality" being proposed, the safety and reliability requirements of steel structures in many industrial fields such as automobiles, aviation, aerospace, and high-speed train are becoming more and more stringent. Therefore, steel structural materials need to meet the requirements of high strength, high plasticity and excellent comprehensive mechanical properties, such as fatigue resistance, impact absorption and work hardening ability for further research and development. In the 21st century, the research on twin-induced plasticity steel, namely twinning-induced plasticity(TWIP) steel, has gradually started. The TWIP steel has single-phase austenite structure, and a large number of deformation twins generate inside the austenite grains during the plastic deformation process, introducing the segmentation phenomenon of the grains, and exhibit a dynamic Hall-Petch effect. As a result, the work hardening ability of TWIP steel can greatly be improved, and has high uniform elongation and tensile strength synchronously enhance, exhibiting potential industrial application value. According to the deformation characteristics of TWIP steel, the research progress of work hardening rate, strain rate sensitivity, deformation temperature sensitivity, fatigue crack growth, and impact resistant behaviors of TWIP steel was systematically introduced in order to provide new ideas and theories for the development of high strength steel support.

关 键 词：孪生诱发塑性钢 孪生 加工硬化 变形速率和温度 疲劳 

分 类 号：TG142.1[一般工业技术—材料科学与工程]