表面机械冲击形变及稳定化诱发Cu30Ni合金组织及其磨损性研究

发布时间：2018-04-10 07:20

本文选题：机械冲击　切入点：稳定化处理　出处：《材料工程》2015年12期

【摘要】：利用原子力显微镜、显微硬度仪和摩擦磨损仪等测试方法研究表面机械冲击形变和稳定化热处理诱发Cu30Ni合金的显微组织结构变化和摩擦磨损性能。结果表明:与原始试样相比,机械冲击形变诱发非稳定晶界组织结构形成,稳定化热处理促进细化组织结构的非稳定晶界向稳定或亚稳定晶界转变,导致显微硬度从93HV提高到297HV,磨损速率从4.2mm3/m降低到0.41mm3/m,摩擦因数μ从0.35降低到0.32,且在机械冲击形变和稳定化热处理的试样磨痕形貌中未观察到显微裂纹存在。
[Abstract]:The microstructure and tribological properties of Cu30Ni alloy induced by mechanical impact deformation and stabilization heat treatment were studied by means of atomic force microscope, microhardness tester and friction and wear tester.The results show that mechanical shock deformation induces the formation of unsteady grain boundary structure, and the stable heat treatment promotes the transformation from the unsteady grain boundary to the metastable grain boundary.The microhardness increased from 93HV to 297HV, the wear rate decreased from 4.2mm3/m to 0.41mm3 / m, the friction coefficient 渭 decreased from 0.35 to 0.32.The microcracks were not observed in the wear trace morphology of the specimens subjected to mechanical shock deformation and stabilized heat treatment.
【作者单位】：江苏省先进结构材料与应用技术重点实验室;南京工程学院材料工程学院;抚顺特殊钢股份有限公司质量处;
【基金】：国家自然科学基金-青年科学基金项目(51301086) 江苏省基础研究计划(自然科学基金)-青年基金项目(BK20130738)
【分类号】：TG146.11

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