摘要
高温合金、钛合金、不锈钢等难加工金属材料在高端装备制造特别是在国防军工领域应用广泛。砂轮磨削是难加工金属材料零件的重要加工方式。然而,磨削过程的力-热强耦合作用对表面完整性影响显著,而表面完整性的优劣对零件服役性能具有直接影响。本文综述了近年来难加工金属材料磨削加工表面完整性的研究进展,全面总结了表面完整性核心要素(如表面粗糙度、残余应力、显微硬度、微观结构等)的创成机理、影响因素及其作用规律以及预测与控制,并对表面完整性控制技术的发展趋势进行了展望。
Nickel-based superalloys,titanium alloys,stainless steel and other metal materials are widely used in high-end equipment manufacturing,especially in the field of national defense and military industry.Grinding process is an important method to machine these difficult-to-cut metal materials.However,the thermomechanical coupling effect in grinding process has a significant effect on surface integrity,while the surface integrity contributes to the service performance of parts.In this paper,the formation mechanism,contributing factors,prediction and control of the core elements(such as surface roughness,residual stress,micro-hardness and microstructure,etc.)of surface integrity were comprehensively summarized.The development trend of surface integrity control technology is also prospected.
作者
丁文锋
李敏
李本凯
徐九华
DING Wenfeng;LI Min;LI Benkai;XU Jiuhua(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《航空材料学报》
CAS
CSCD
北大核心
2021年第4期36-56,共21页
Journal of Aeronautical Materials
基金
国家自然科学基金(51775275,51921003)
“航空发动机与燃气轮机”国家科技重大专项项目(2017-VII-0002-0095)
江苏省“六大人才高峰”高层次人才计划项目(JXQC-002)
南京航空航天大学研究生拔尖创新人才培养“引航计划”跨学科创新基金(KXKCXJJ202006)。
关键词
磨削
表面完整性
金属材料
grinding
surface integrity
metal materials
