Corrosion resistance enhancement for 6Mo austenitic stainless steel through B alloying coupled with a simple pre-aging method

被引：0
|
作者：
Ma, Jinyao [1 ,4 ]
Zhang, Shucai [2 ,3 ]
Li, Huabing [2 ,3 ]
Tan, Huanyu [5 ]
Feng, Hao [2 ,3 ]
Wang, Puli [5 ]
Zhang, Yi [5 ]
Han, Peide [5 ]
Wang, Zhihua [4 ]
机构：
[1] Taiyuan Univ Technol, Instrumental Anal Ctr, Taiyuan 030024, Peoples R China
[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[3] Minist Educ, Key Lab Ecol Met Multimet Ores, Shenyang 110819, Peoples R China
[4] Taiyuan Univ Technol, Coll Mech Engn, Taiyuan 030024, Peoples R China
[5] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 240卷
基金：
中国国家自然科学基金;
关键词：
SASS; Boron; Molybdenum; Grain boundary; Corrosion resistance; INTERGRANULAR CORROSION; PITTING CORROSION; GRAIN-BOUNDARY; SIGMA-PHASE; PRECIPITATION BEHAVIOR; CARBON-STEEL; MO; CR; SEGREGATION; PASSIVATION;
D O I：
10.1016/j.corsci.2024.112481
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of boron (B) addition coupled with 500 degrees C pre-aging on the corrosion resistance of S31254 was systematically investigated. The results suggested that the diffusion of Mo to grain boundaries (GBs) played a crucial role in enhancing intergranular corrosion resistance. Additionally, the addition of B further promoted the uniform distribution of Mo during the pre-aging process by suppressing Mo segregation at GB. Ultimate, the B microalloying coupled with the pre-aging strategy optimized the composition of passive film through promoting the formation of Mo-rich passivation film, which significantly enhanced the corrosion resistance of Mocontaining stainless steel.
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页数：14
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