葛利玲,路彩虹,井晓天,卢正欣,刘忠良.40Cr钢表面纳米化组织与性能的研究[J].表面技术,2008,37(2):11-13.
GE Li-Iing,LU Cai-hong,JING Xiao-tian,LU Zheng-xin,LIU Zhong-liang.Study on Microstructure and Properties of 40Cr Steel Surface Nanocrystallization[J].Surface Technology,2008,37(2):11-13
40Cr钢表面纳米化组织与性能的研究
Study on Microstructure and Properties of 40Cr Steel Surface Nanocrystallization
投稿时间:2007-12-13  修订日期:2008-04-10
DOI:
中文关键词:  40Cr钢  超音速微粒轰击技术  纳米结构表面层  显微硬度  耐磨性
英文关键词:40Cr steel  Supersonic fine particles bombarding  Nanostructured surface layer  Micro-hardness  Wear resistance
基金项目:陕西省自然科学基金项目(2005EIOI)
作者单位
葛利玲 西安理工大学材料科学与工程学院,陕西西安710048 
路彩虹 西安理工大学材料科学与工程学院,陕西西安710048 
井晓天 西安理工大学材料科学与工程学院,陕西西安710048 
卢正欣 西安理工大学材料科学与工程学院,陕西西安710048 
刘忠良 西安理工大学材料科学与工程学院,陕西西安710048 
AuthorInstitution
GE Li-Iing School of Materials Science and Engineering, Xi' an University of Technology, Xi' an 710048 , China 
LU Cai-hong School of Materials Science and Engineering, Xi' an University of Technology, Xi' an 710048 , China 
JING Xiao-tian School of Materials Science and Engineering, Xi' an University of Technology, Xi' an 710048 , China 
LU Zheng-xin School of Materials Science and Engineering, Xi' an University of Technology, Xi' an 710048 , China 
LIU Zhong-liang School of Materials Science and Engineering, Xi' an University of Technology, Xi' an 710048 , China 
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中文摘要:
      采用超音速微粒轰击技术( SFPB)对40Cr调质钢进行表面纳米晶结构层的制备,利用TEM、XRD、GX-71型金相显微镜和TUKON2100显微/维氏硬度计等对表面纳米层的组织结构、硬度以及耐磨性进行了分析研究。结果表明:经过SFPB表面处理后,40Cr调质钢表面晶粒细化,形成了随机取向的铁素体和渗碳体纳米晶粒构成,晶粒尺寸达到lOnm,纳米层厚度为40μm。纳米晶粒尺寸随着距表面距离的增加而增大,纳米化主要是位错运动的结果。经SFPB处理后,表层的显微硬度提高到526HV,且随着深度的增加,硬度迅速降低,表面的耐磨性也明显提高。
英文摘要:
      By means of supersonic fine particles bombarding ( SFPB) , nanostructured surface layer was fabricated on 40Cr steel plate. The microstructure features of various sections in the surface layer were characterized by using XRD, TEM and optical microscope observation. The micro-hardness was measured by micro-hardness instrument. The result shows that after SFPB treatment, in the surface layer, nano-sized grains are observed and composed of ferrite and cementite phases, the the mean grain size in the surface layer is about 10 nm and the depth is about 40μm; The grain size increases depending upon distance from the treated surface. Experimental evidence and analysis indicate grain refinement could be mainly attributed to the movement of dislocation. The surface micro-hardness is increased t0 526HV, and decreases rapidly with the increase of the depth from the surface. At the same time, its wear resistance also is greatly improved.
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