碳含量与固溶处理对316不锈钢板的晶间腐蚀与高温性能的影响

doi:10.13251/j.issn.0254-6051.2025.09.016

摘要/Abstract

摘要： 以厚度为40 mm的316不锈钢板为研究对象,研究了C含量(0.030%、0.045%、0.050%和0.060%)及不同温度(1050、1080 ℃)和不同保温时间(40、60、80和100 min)下固溶处理对试验钢板晶间腐蚀和高温性能的影响。结果表明,C含量为0.030%时钢板经过1050 ℃保温40 min能够通过650 ℃敏化2 h后的晶间腐蚀测试,当C含量为0.045%时需要1080 ℃保温40 min才能通过敏化态晶间腐蚀测试,而当C含量为0.050%和0.060%时,钢板不能再通过固溶温度的升高或时间的延长通过650 ℃敏化2 h后的晶间腐蚀测试。通过对不同C含量316不锈钢板的高温(250~650 ℃)拉伸试验,最终确定钢板既有较高的高温性能又能通过敏化态晶间腐蚀检测的C含量控制范围为0.040%~0.045%。

关键词: 316不锈钢板, 固溶处理, 抗晶间腐蚀性能, 高温性能

Abstract: Taking 316 stainless steel plates of 40 mm thickness as research subject,effects of carbon content (0.030%, 0.045%, 0.050%, 0.060%) and solution treatment at different temperatures (1050 ℃, 1080 ℃) for different time (40, 60, 80, 100 min) on intergranular corrosion and high temperature properties of the tested steel plates were studied. The results show that when the carbon content is 0.030%, the steel plate can pass the intergranular corrosion test after being sensitized at 650 ℃ for 2 h after solution treatment at 1050 ℃ for 40 min. When the carbon content is 0.045%, it needs to be held at 1080 ℃ for 40 min to pass the intergranular corrosion test in the sensitized state. However, when the carbon contents are 0.050% and 0.060%, the steel plates can no longer pass the intergranular corrosion test after sensitization at 650 ℃ for 2 h even with the increase of solution treatment temperature or the extension of holding time. Through the high-temperature tensile tests (250-650 ℃) on the tested steel plates with different carbon contents, it is finally determined that the carbon content control range for the steel plates to have both high high-temperature properties and pass the sensitized intergranular corrosion test is 0.040%-0.045%.

Key words: 316 stainless steel plate, solution treatment, intergranular corrosion resistance, high temperature properties

中图分类号:

TG142.71

庄迎. 碳含量与固溶处理对316不锈钢板的晶间腐蚀与高温性能的影响[J]. 金属热处理, 2025, 50(9): 109-112.

Zhuang Ying. Effect of carbon content and solution treatment on intergranular corrosion and high temperature properties of 316 stainless steel plates[J]. Heat Treatment of Metals, 2025, 50(9): 109-112.

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