摘要
多个标准中规定材料的重复热处理数不得超过两次。对CD3MN双相不锈钢在1080℃及1120℃分别进行了4次重复固溶处理试验,检测试块的力学性能、金相组织、耐点腐蚀性能。结果表明:CD3MN双相不锈钢在同一温度下经过4次固溶处理后,力学性能变化不大,均满足标准要求;耐点腐蚀性能变化不大;固溶处理温度从1080℃升高到1120℃,铁素体含量从30%提高到45%,力学性能和耐点蚀性能略有提高。
Reheat-treated times more than 2 are not allowed according to many material standards. Four times reheat-treated tests were done at 1 080 ℃ and 1 120 ℃ on duplex stainless steel CD3MN, the mechanical properties, microstructure and pit resistance of samples were tested. The results show that after 4 times reheat-treated at the same temperature, mechanical properties and pit resistance of CD3MN have no significant difference; when the temperature increased from 1 080 ℃ to 1 120 ℃, the content offerrite increased from 30% to 45%, and mechanical properties and pit resistance were slightly improved.
出处
《铸造》
CAS
CSCD
北大核心
2017年第5期494-496,共3页
Foundry
关键词
重复热处理
双相不锈钢
性能
reheat-treated
duplex stainless steel
performance
