Effect of Short-Time Aging on the Pitting Corrosion Behavior of a Novel Lean Duplex Stainless Steel 2002

作     者：Tian-Yi Sun Yan-Jun Guo Yi-Ming Jiang Jin Li 

作者机构：Department of Materials Science Fudan University 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2019年第32卷第6期

页      面：755-763页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 

基　　金：financial support from the National Natural Science Foundation of China (Grant Nos. 51671059 and 51501041) 

主　　题：Lean duplex stainless steel Aging Pitting corrosion Impact energy Precipitates 

摘      要：The effect of short-time aging in the temperature range between 400 and 1000°C on the pitting corrosion behavior and mechanical property of a novel lean duplex stainless steel(LDSS)2002 was investigated through the potentiostatic critical pitting temperature(CPT)tests and the Charpy impact *** the pitting corrosion resistance and the toughness of aged specimens degraded due to the precipitation of detrimental secondary phases and the most significant reduction of CPT and impact energy emerged at 650°C *** CPT of LDSS 2002 specimen aged at 650°C decreased by 28°C,and the impact energy dropped from 69 to 29 J/cm2 compared with the solution-annealed *** electron microscopy characterization showed that the main precipitates in LDSS 2002 were Cr2N and M23C6 along the ferrite–austenite grain boundaries.