热加工对430铁素体不锈钢“金粉”现象的影响

材料工程, 2013, (3): 61-66. doi: 10.3969/j.issn.1001-4381.2013.03.012

热加工对430铁素体不锈钢“金粉”现象的影响

邵泽斌 ^1, , 陈海涛 ^2, , 郎宇平 ^3, , 朱心昆 ^4,

1.昆明理工大学材料科学与工程学院,昆明650093;钢铁研究总院结构材料研究所,北京100081

2.钢铁研究总院结构材料研究所,北京100081

3.钢铁研究总院结构材料研究所,北京100081

4.昆明理工大学材料科学与工程学院,昆明650093

基金项目: 国家科技支撑计划(2007BAE51B01)

关键词： "金粉" , 430铁素体不锈钢 , 晶间腐蚀 , DL-EPR

Effect of Thermal Processing on the "Gold Dust" Defect of 430 Ferritic Stainless Steel

研究了430铁素体不锈钢晶间腐蚀和表面“金粉”缺陷的关系.通过Gleeble 3800热模拟机模拟了不同工艺条件下的热轧实验,以及热轧后模拟卷取对430铁素体不锈钢晶间腐蚀敏感性产生的影响；采用双环-电化学动电位再活化(DL-EPR)法检测430铁素体不锈钢的晶间腐蚀.结果表明:430铁素体不锈钢在热轧时产生敏化,在酸洗过程中造成的晶间腐蚀,最终会导致冷轧后表面“金粉”缺陷的产生.Gleeble实验表明,最终变形温度为900～950℃,冷速为水冷条件下有利于避免晶间腐蚀的产生.模拟卷取实验表明,经过650～800℃的处理能够进一步避免和消除430铁素体不锈钢的晶间腐蚀敏感性.

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材料期刊网

热加工对430铁素体不锈钢“金粉”现象的影响

Effect of Thermal Processing on the "Gold Dust" Defect of 430 Ferritic Stainless Steel

参考文献