摘要
对17-4PH不锈钢分别进行了真空固溶和时效处理及离子渗氮。结果表明:17-4PH不锈钢经1040℃真空固溶处理随后480℃时效处理后的硬度为41.0~41.5 HRC;离子渗氮温度对17-4PH不锈钢表面硬度影响不大,对基体硬度的影响较大,对渗氮层深度有一定的影响;渗氮剂的氮氢比对17-4PH钢表面和基体的硬度影响不大,对渗氮层深度有一定影响;在500℃采用N_(2)∶H_(2)=1∶3的渗剂对17-4PH钢进行离子渗氮时,随着渗氮时间的延长,渗层深度增加,表面硬度变化不大,基体硬度降低。
17-4PH stainless steel was solution treated in a vacuum furnace,aged and ion nitrided,respectively.The results showed that(a)the 17-4PH stainless steel vacuum solution treated at 1040℃then aged at 480℃displayed hardness of 41.0 to 41.4 HRC;(b)the ion nitriding temperature had less influence on surface hardness,and a certain influence on nitrided case depth for 17-4PH steel;(c)the nitrogen to hydrogen ratio of nitriding agent had less influence on hardness of surface and matrix of 17-4PH steel,and a certain influence on its nitrided case depth;and(d)when 17-4PH steel was ion nitrided at 500℃in a nitriding agent where nitrogen to hydrogen ratio was 1-to-3,with the increase in nitriding time,the nitrided case became deeper,the surface hardness had no obvious change,and the matrix hardness decreased.
作者
刘尚杰
LIU Shangjie(Shanghai Automobile Gear Works Co.,Ltd.,Shanghai 201807,China)
出处
《热处理》
CAS
2023年第6期28-32,共5页
Heat Treatment
