形变强化金属材料表面状态特征的疲劳演变研究进展  

Review on Fatigue Evolution of Surface State Characteristics of Deformation Strengthened Metal Materials

作　　者：杨宇辉 魏昕[1] 隆志力 杜志钢 李毅 YANG Yu-hui;WEI Xin;LONG Zhi-li;DU Zhi-gang;LI Yi(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;School of Mechanical Engineering and Automation,Harbin Institute of Technology(Shenzhen),Guangdong Shenzhen 518055,China)

机构地区：[1]广东工业大学机电工程学院,广州510006 [2]哈尔滨工业大学(深圳)机电工程与自动化学院,广东深圳518055

出　　处：《表面技术》2023年第6期112-125,234,共15页Surface Technology

基　　金：广东省重点研发计划(2020B009926001);国家自然科学基金(U52175392,51905098,5220040542);深圳市基础研究计划(JCYJ20200109113429208,JCYJ2020109112803851)。

摘　　要：概述了形变强化技术对金属材料疲劳性能的增强机理,主要归因于残余压应力、加工硬化、微观组织等表面状态特征的协同作用。重点综述了形变强化处理后金属材料表层的残余应力、加工硬化以及微观组织等表面状态特征在热载荷、机械载荷影响下疲劳演变的研究进展,分别总结了热载荷、机械载荷以及热-机械耦合载荷等作用条件下残余应力松弛行为、加工硬化松弛行为以及微观组织的疲劳演变规律与机理,并就热载荷、机械载荷作用下残余应力松弛行为的理论预测模型进行了归纳总结。在此基础上,讨论了关于残余应力、加工硬化以及微观组织等表面状态特征因素之间内在联系的研究进展,并指出了对于上述三者之间的逻辑关系目前研究存在的不足之处,以及尚待解决的问题。最后分析了当前金属材料表面形变强化研究中存在的一些问题与不足,并对表面形变强化抗疲劳制造技术未来的发展趋势进行了展望。Surface deformation strengthening technology can significantly improve the fatigue properties of metal materials,so it can be widely used in aerospace,rail transit,marine ships,and other fields.This technology has been improved and its application has been expanded recently due to the development of new surface strengthening technologies such as laser shot peening,ultrasonic shot peening,and ultrasonic rolling.Many studies have shown that the enhancement of fatigue properties of metal materials by surface deformation strengthening technology is mainly attributed to the synergistic effect of surface state characteristics such as compressive residual stress,work hardening,and microstructure.In the last decades,a lot of research work has been carried out on the surface deformation strengthening processing equipment,processing process,and mechanical properties of materials.However,there are few systematic reviews on the fatigue evolution of surface state characteristics such as residual stress,work hardening,and surface microstructure of deformation strengthened materials.Compressive residual stress is one of the most critical factors of metal fatigue performance.When a heavy load is applied,the stress strengthening effect caused by residual compressive residual stress might disappear,and the work hardening effect would also decrease or even disappear.At this time,the strengthening mechanism of the organizational structure induced by surface deformation plays a leading role.The work aims to explore the research progress of fatigue evolution of surface state characteristics such as residual stress,work hardening,and microstructure of metal materials after surface deformation strengthening under the effect of thermal load or mechanical load,to find out the relationship among residual stress,work hardening and microstructure,and the synergistic effect of them on the fatigue properties of metal materials.Firstly,the effects of thermal load factors(such as temperature,thermal exposure time,etc.)and mechanical load factors

关 键 词：表面形变强化 表面状态特征 残余应力 加工硬化 微观组织 疲劳演变 

分 类 号：TB559[理学—物理] TG668[理学—声学]