摘要
采用不同的温度淬火获得不同组织的马氏体-铁素体不锈钢,结合SEM、 XRD、氢渗透等手段研究了马氏体-铁素体不锈钢中各类型组织对氢扩散的影响。结果表明:双相不锈钢经过不同温度淬火后得到的显微组织不同,不同的微观结构显示出不同的氢扩散行为,其中920℃淬火后试样的耐蚀性最优,其组织中的残余奥氏体可以有效阻止氢在金属中的渗透。金属间相对耐腐蚀性具有不利影响,残余奥氏体对材料的耐蚀性贡献最大,马氏体次之,铁素体最小。
The martensite ferrite stainless steel with different microstructure was obtained by different quenching temperature.The effect of various types ofmicrostructure on hydrogen diffusion in martensite-ferrite stainless steel was studied by means of SEM,XRD,hydrogen permeation.The results show'that,the microstructure of duplex stainless steel after quenching at different temperatures is different.Different microstructure shows different hydrogen diffusion behavior.The corrosion resistance of the sample quenched at 920℃ is optimal,and the presence of residual austenite in the microstructure can effectively prevent the penetration of hydrogen in the metal.The intermetallic phase has a negative effect on corrosion resistance.The residual austenite contributes most to the corrosion resistance of the material,followed by martensite and ferrite.
作者
卜铁伟
BU Tiewei(Department of Electrical and Mechanical Engineering,Shandong Transport Vocational College,Weifang 261206,China)
出处
《热加工工艺》
CSCD
北大核心
2018年第22期214-216,220,共4页
Hot Working Technology
关键词
马氏体-铁素体不锈钢
耐蚀性
残余奥氏体
martensite ferrite stainless steel
corrosion resistance
retained austenite
