马彪,何嘉,王立夫,李宝旺,马冬莉

• 1:中车唐山机车车辆有限公司

摘要(Abstract)：

通过热处理试验研究了火焰调修工艺对S30103-1/8 Hard奥氏体不锈钢的拉伸性能、冲击韧性、硬度、中值疲劳极限以及耐晶间腐蚀性能的影响,回归得到了疲劳寿命曲线,为美标轨道车辆制造提供工艺指导。结果表明:S30103-1/8 Hard奥氏体不锈钢的显微组织为变形奥氏体组织,受热后力学性能容易波动。当火焰调修温度在450～850℃范围内,不锈钢的力学性能、抗晶间腐蚀性能随温度升高呈下降趋势。在调修温度为450℃条件下,增加调修次数对不锈钢板材的抗晶间腐蚀性能和疲劳强度影响不大。因此,选择调修温度不应超过450℃,在此温度下可以进行多次调修。

关键词(KeyWords)： 火焰调修;奥氏体不锈钢;力学性能;疲劳强度;晶间腐蚀

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 马彪,何嘉,王立夫,李宝旺,马冬莉

DOI: 10.13289/j.issn.1009-6264.2019-0311

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