时效温度对含Cu抗菌双相不锈钢力学及耐蚀性能的影响  

Effect of aging temperature on mechanical properties and corrosion resistance of copper-bearing antibacterial duplex stainless steel

作　　者：刘东[1] 王永霞[1] 向红亮[1] 杨彩萍[1] 

机构地区：[1]福州大学机械工程及自动化学院,福建福州350116

出　　处：《金属热处理》2015年第10期127-131,共5页Heat Treatment of Metals

基　　金：福建省高等学校新世纪优秀人才支持计划资助项目(JA10014);福建省科技厅重点项目(2014H003);福建省海洋高新产业发展专项(闽海渔高新(2004)14)

摘　　要：通过SEM、EDS以及拉伸试验与电化学测试等手段,研究了时效温度对含铜抗菌双相不锈钢力学及耐蚀性能的影响。结果表明,时效处理析出的富Cu相有提高抗拉强度的作用;在540~580℃范围内,随着时效温度升高,富铜相粗化,材料抗拉强度及塑性下降,断口由韧性断裂逐渐向解理断裂转变;在30%醋酸溶液中,富铜相体积分数越大,试样耐蚀能力越强。Mechanical properties and corrosion resistance of copper-bearing antibacterial duplex stainless steel were investigated by SEM,EDS,tensile test and electrochemical measurement. The results show that the rich copper precipitate has effect of tensile strength increasing.In the range of 540-580 ℃,with the aging temperature increasing,the rich copper phase coarsening,the tensile strength and plasticity decrease,and fracture from ductile fracture to quasi cleavage fracture gradually. In 30% acetic acid solution,with the rich copper phase volume fraction increasing,the corrosion resistant improves.

关 键 词：含铜双相不锈钢 时效温度 富铜相 力学性能 耐蚀性能 

分 类 号：TG162.83[金属学及工艺—热处理]