金属材料表面自纳米化技术研究  

Research on Surface Self Nanoization Technology of Metal Materials

作　　者：张顺[1] 丁亚茹[1] Zhang Shun;Ding Yaru(Inner Mongolia Mechanical and Electrical Vocational and Technical College,Hohhot Inner Mongolia 010051)

机构地区：[1]内蒙古机电职业技术学院,内蒙古呼和浩特010051

出　　处：《山西冶金》2023年第5期71-73,共3页Shanxi Metallurgy

基　　金：内蒙古自治区高等学校科学研究项目(NJZY21359);内蒙古机电职业技术学院科学研究项目(NJDZR2001)。

摘　　要：金属表面自纳米化技术具有方法简单、处理成本低等优点,适用于各种金属材料,其市场开发空间广阔。鉴于此,针对表面自纳米化对金属表面组织及性能的影响情况进行研究分析。研究表明:金属表面自纳米化技术是在材料表面施加冲击载荷,使其发生塑性变形,进而形成一定厚度的纳米晶;处理后的材料表层组织呈阶梯状变化,分为纳米层、细亚晶塑变层、粗晶应变层、基体层;通过表面自纳米化处理,材料表面的粗糙度、平整度和缺陷数量发生明显变化,进而使残余应力、摩擦磨损性和疲劳性能得以改善。Metal surface self nanomaterialization technology has the advantages of simple methods and low processing costs,and is suitable for various metal materials.Its market development space is broad.In view of this,research and analysis are conducted on the impact of surface self nanomaterialization on the microstructure and properties of metal surfaces.Research has shown that the metal surface self nanomaterialization technology applies impact loads on the material surface,causing plastic deformation and forming a certain thickness of nanocrystals.The surface structure of the treated material exhibits a stepped change,which is divided into nano layer,fine sub crystalline plastic layer,coarse crystalline strain layer,and matrix layer.Through surface self nano treatment,the roughness,flatness,and number of defects on the material surface undergo significant changes,thereby improving residual stress,friction and wear resistance,and fatigue performance.

关 键 词：表面自纳米化 塑性变形 疲劳性能 摩擦磨损性能 

分 类 号：TG17[金属学及工艺—金属表面处理]