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发明公开
CN109371337A 一种铜锆钴抗蚀奥氏体不锈钢及其加工与热处理方法 无效 - 撤回

一种铜锆钴抗蚀奥氏体不锈钢及其加工与热处理方法
摘要：
一种铜锆钴抗蚀奥氏体不锈钢及其加工与热处理方法，合金元素质量百分比为：C≤0.07，Ni＝8.0～10.0，Cr＝17.0～19.0，Zr≤0.53，Cu＝0.2～0.8，Co＝0.1～0.5，Mn≤2.0，Si≤1.0，P≤0.035，S≤0.030，其中7.59×(C-0.01)≤Zr≤7.59×C，余量为Fe。经热变形开坯和冷变形，ZrC破碎、弥散，高温固溶处理后晶粒粗化。通氧条件下80℃含5×10-6F-的0.5mol/L的H2SO4电解液中腐蚀电流密度为1.26～1.58μA/cm2，与经表面涂层的不锈钢双极板材料相当。具有低硬度和高延伸特点，利于双极板流道的成型。
摘要（英）：

The invention discloses copper zirconium cobalt corrosion-resistant austenitic stainless steel and a processing and heat treatment method thereof. The stainless steel comprises alloy elements of, by mass, less than or equal to 0.07% of C, 8.0-10.0% of Ni, 17.0-19.0% of Cr, less than or equal to 0.53% of Zr, 0.2-0.8% of Cu, 0.1-0.5% of Co, less than or equal to 2.0% of Mn, less than or equal to 1.0% of Si, less than or equal to 0.035% of P, less than or equal to 0.030% of S and the balance Fe, wherein 7.59*(C-0.01)<=Zr<=7.59*C. After thermal deformation cogging and cold deformation, ZrC is broken and dispersed, and grains are coarsened after high temperature solution treatment. The corrosion current density of a 0.5mol/L H2SO4 electrolyte containing 5x10<-6>F<-> at 80 DEG C under oxygen condition is 1.26-1.58 [mu]A/cm<2> and is equivalent to that of a surface-coated stainless steel bipolar plate material. The stainless steel has the characteristics of low hardness and high elongation, and formation of bipolar plate runners is facilitated.

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