铸造2025，Vol.74Issue(6)：732-737,6.
固溶处理冷却工艺对铸造特超级双相不锈钢CD3MWN组织和性能的影响
Influence of Solution Heat Treatment Cooling Process on Microstructure and Properties of Cast Hyper Duplex Stainless Steel CD3MWN
郑霏 1陈伟 1陈亚涛 1王灵水1
作者信息
- 1. 中船双瑞(洛阳)特种装备股份有限公司,河南洛阳 471023
- 折叠
摘要
Abstract
The effects of different solution heat treatment cooling processes(direct water quenching and water quenching after furnace cooling)on microstructure and properties of hyper duplex stainless steel CD3MWN were studied.The results show that during direct water quenching solution cooling,when CD3MWN is heat-treated below 1 120℃ the amount of σ phase precipitation increases as the temperature decreases,giving the material has high strength and hardness.When heat-treated at 1 120℃ and above,the σ phase is completely dissolved,the ratio of the α and γ two phases is the determining factor affecting the properties of CD3MWN steel.Compared to direct water quenching,in the solution cooling process of water quenching after furnace cooling no σ phase precipitates in the microstructure;instead,it's an α and γ phase microstructure with a ratio approaching 1∶1,resulting in better comprehensive properties.In the production engineering of CD3MWN casting products,water quenching after furnace cooling is preferred as it ensures good strength-ductility balance and reduces risks associated with high-temperature water quenching.关键词
固溶处理/冷却工艺/特超级双相不锈钢/CD3MWNKey words
solution treatment/cooling process/hyper-duplex stainless steel/CD3MWN分类
矿业与冶金引用本文复制引用
郑霏,陈伟,陈亚涛,王灵水..固溶处理冷却工艺对铸造特超级双相不锈钢CD3MWN组织和性能的影响[J].铸造,2025,74(6):732-737,6.
