晶粒尺寸对316L不锈钢耐晶间腐蚀性能的影响

孙小燕; 汪江节; 刘孝光; 张国青

doi:10.15980/j.tzzz.2014.12.005

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晶粒尺寸对316L不锈钢耐晶间腐蚀性能的影响
Influence of Grain Size on Intergranular Corrosion Resistance of 316L Stainless Steel
2014年34卷第12期页码：1250-1252
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.12.005

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[1]孙小燕,汪江节,刘孝光,张国青.晶粒尺寸对316L不锈钢耐晶间腐蚀性能的影响[J].特种铸造及有色合金,2014,34(12):1250-1252.

Sun Xiaoyan, Wang Jiangjie, Liu Xiaoguang, et al. Influence of Grain Size on Intergranular Corrosion Resistance of 316L Stainless Steel[J]. Special Casting & Nonferrous Alloys, 2014,34(12):1250-1252.
[1]孙小燕,汪江节,刘孝光,张国青.晶粒尺寸对316L不锈钢耐晶间腐蚀性能的影响[J].特种铸造及有色合金,2014,34(12):1250-1252. DOI： 10.15980/j.tzzz.2014.12.005.

Sun Xiaoyan, Wang Jiangjie, Liu Xiaoguang, et al. Influence of Grain Size on Intergranular Corrosion Resistance of 316L Stainless Steel[J]. Special Casting & Nonferrous Alloys, 2014,34(12):1250-1252. DOI： 10.15980/j.tzzz.2014.12.005.

摘要

研究了316L不锈钢在650℃时效处理24

6h后耐晶间腐蚀性能

利用光学显微镜观察不同晶粒尺寸及时效热处理的316L不锈钢的显微组织及腐蚀形貌的演变。结果表明

在相同的时效处理条件下

晶粒尺寸大的试样腐蚀质量损失小。随着时效时间延长

试样的耐晶间腐蚀能力首先下降

经过48h时效后再上升

试样的敏化规律与晶粒尺寸无关。在650℃时效48h以后的试样已经较好地脱敏。

Abstract

The intergranular corrosion resistance of 316 Lstainless steel with different grain sizes through aging treatment at 650 ℃for 24

6hwas tested by immersing the specimens into corrosive solution.The morphology and microstructure of specimens after corrosion testing were analyzed by optical microscopy.The results show that

the weight loss of the specimens with a larger grain size is lower than that of ones with a smaller grain sizes.The intergranular corrosion resistance is decreased during aging process

however

it is increased after aging for longer than 48 h.The sensitization features are independent of grain size.Based on the experimental results

the specimens began to desensitization after aging at 650 ℃for 48 h.