奥氏体不锈钢低温气体渗碳过程中温度对渗碳层的影响  

Effect of temperature on low temperature gas carburized layer of austenitic stainless steel

作　　者：李朋[1] 潘邻[1] 张良界[1] 杨闽红[1] 朱云峰[1] 马飞[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030

出　　处：《兵器材料科学与工程》2013年第3期26-28,共3页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(50975210)

摘　　要：利用扫描电镜、电子探针、显微硬度计、CS电化学工作站研究AISI316奥氏体不锈钢经低温气体渗碳处理后渗碳层显微组织及力学特性的变化。结果表明,在450,470,500℃温度条件下,在AISI316奥氏体不锈钢表面获得10~33μm的硬化层,随温度的不同,渗层深度、硬度梯度、耐蚀性能呈现不同的变化规律。Microstructure and mechanical properties of low temperature gas carburized layer of AISI316 austenitic stainless steel were investigated by means of scanning electron microscopy（SEM）,micro hardness tester,CS electrochemical workstation. The experimental results indicate that the thickness of hardened layer is within the range of 10 to 33 μm,when AISI316 austenitic stainless steel is carburized at 450,470,500 ℃. With the variation of carburizing temperature,different case depth,hardness gradient and corrosion resistance are observed in the steel.

关 键 词：低温气体渗碳 奥氏体不锈钢 渗碳层 硬度 

分 类 号：TG156.8[金属学及工艺—热处理]