内氧化法制备表面弥散强化铜  

Superficial Dispersion-strengthening Copper Alloy Produced by Internal Oxidation

作　　者：宋克兴[1,2] 王露娟[1,2] 张彦敏[1,2] 王青[2,3] 

机构地区：[1]河南科技大学材料科学与工程学院 [2]河南科技大学河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003 [3]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《河南科技大学学报（自然科学版）》2012年第5期28-31,5+4,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(51075122)

摘　　要：采用包埋法对Cu-Cr-Zr合金圆柱试样进行内氧化处理及相关的组织和性能测试。试验结果表明:在一定温度下,通过控制氧分压,经过一定时间在Cu-Cr-Zr合金表面形成一层Cr2O3/ZrO2颗粒弥散分布的内氧化层。内氧化层晶粒大小由外向内逐渐增大。内氧化层硬度由表面向内逐渐降低,平均硬度略高于未氧化层硬度。固溶时效处理对内氧化区域的硬度影响不大,经冷变形后,无论是内氧化区域(弥散强化区域)还是未氧化区域(时效析出强化区域)均可获得较高的硬度。The Cu-Cr-Zr alloy column sample was treated by internal oxidation and the properties and microstructures were studied.The results show that an oxidation layer of dispersion of Cr2O3/ZrO2 particles is obtained around the column sample surface by controlling the partial pressure of oxygen for several hours.The grains of internal oxidation area grow gradually from surface to inside.The hardness of internal oxidation area increases gradually from surface to inside,the average hardness of oxidation area is harder than the no-oxidation area.The effect of solution and aging heat treatment on the hardness of internal oxidation layer is negligible.However,the hardness of both internal oxidation area(dispersion-strengthening area)and precipitation strengthening area becomes harder after cold deformation.

关 键 词：CU-CR-ZR合金 内氧化 表面弥散强化 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TB331[金属学及工艺—金属材料]