摘要
采用粉末冶金技术设计制备了质量分数4%TiC强化的FeCrB基抗磨复合材料,与GCr15钢球配副进行往复式干摩擦实验,系统研究滑动速度和载荷对复合材料的干摩擦磨损性能的影响。使用X射线衍射(X-Ray Diffraction,XRD)、扫描电子显微镜(Scanning Electron Microscope,SEM)等技术分析了复合材料的物相成分和微观形貌。实验结果表明:复合材料物相为α-Fe、FeCr、TiC、Cr_(2)B和Fe_(2)B相。TiC的加入显著提高了材料的硬度,密度略有下降。随着滑动速度和载荷的增大,摩擦因数总体下降而磨损率显著增加。TiC对铁基体的钉扎作用抑制了材料的剥落和变形,材料的抗磨性能显著提高。综合分析,TiC能有效提升FeCrB合金的干摩擦学性能,其磨损机制主要是剥层磨损和磨粒磨损。
The 4%weight percentage TiC reinforced FeCrB based anti⁃wear composite was designed and prepared by powder metallurgy technology.The effects of sliding speed and load on the dry friction and wear properties of the composite were systematically studied by reciprocating dry friction experiments with GCr15 steel ball pairs.The X⁃ray diffraction(XRD),scanning electron microscope(SEM)and other techniques were used to analyze the phase composition and micro morphology of the composite.The experimental results show that the phase of the composite isα⁃Fe,FeCr,TiC,Cr_(2)B and Fe_(2)B.The addition of TiC significantly increases the hardness of the material and slightly decreases the density.With the increase of sliding speed and load,the friction coefficient decreases generally and the wear rate increases significantly.The pinning strengthening effect of TiC on the Fe matrix composite inhibits the spalling and deformation of the material,and the wear resistance of the material is significantly improved.Through comprehensive analysis,TiC can effectively improve the dry tribological properties of FeCrB alloy,and its wear mechanism is mainly delamination wear and abrasive wear.
作者
赵虎成
崔功军
郭贺
崔昊天
韩文鹏
ZHAO HuCheng;CUI GongJun;GUO He;CUI HaoTian;HAN WenPeng(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Mine Fluid Control Engineering Laboratory,Taiyuan 030024,China;National-Local Joint Engineering Laboratory of Mine Fluid Control,Taiyuan 030024,China)
出处
《机械强度》
CAS
CSCD
北大核心
2024年第5期1168-1174,共7页
Journal of Mechanical Strength
基金
山西省回国留学人员科研项目(2021-060)
国家自然科学基金项目(51775365)
国家自然科学基金联合基金项目(U1910212)资助。
关键词
铁基复合材料
TIC
干摩擦
抗磨
磨损机制
Fe matrix composite
TiC
Dry friction
Wear resistant
Wear mechanism
