Pitting corrosion behavior of friction-surfaced 17-4PH stainless steel coatings with and without subsequent heat treatment

被引：17
|
作者：
Guo, D. [1 ,2 ]
Chen, J. [1 ]
Chen, X. [1 ]
Shi, Q. [1 ]
Cristino, V. A. M. [1 ]
Kwok, C. T. [1 ,3 ]
Tam, L. M. [1 ,2 ]
Qian, H. [1 ,4 ,5 ]
Zhang, D. [4 ]
Li, X. [4 ]
机构：
[1] Univ Macau, Dept Electromech Engn, Macau, Peoples R China
[2] Inst Dev & Qual, Macau, Peoples R China
[3] Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China
[4] Univ Sci & Technol Beijing, Natl Mat Corros & Protect Data Ctr, Inst Adv Mat & Technol, Beijing, Peoples R China
[5] Univ Sci & Technol Beijing, Shunde Grad Sch, BRI Southeast Asia Network Corros & Protect MOE, Foshan, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 193卷
关键词：
Friction surfacing; Post-aging; 17-4PH stainless steel; Pitting corrosion; Metastable pits; LOCALIZED CORROSION; SULFIDE INCLUSIONS; RESIDUAL-STRESS; PIT INITIATION; DELTA-FERRITE; RESISTANCE; 304-STAINLESS-STEEL; MICROSTRUCTURE; PRECIPITATION; PROPAGATION;
D O I：
10.1016/j.corsci.2021.109887
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Improvement in pitting corrosion resistance of the friction-surfaced (FSed) 17-4PH stainless steel coatings was mainly attributed to fragmentation of sulfide inclusions during friction surfacing (FS). Formation of vermicular 8-ferrite and grain refinement of martensitic matrix around the 8-ferrite affected the distribution of pits. FS parameters had a negligible effect on the pitting corrosion resistance of the FSed 17-4PH coatings. However, the decrease in pitting corrosion resistance of the FSed coatings after aging (H900) was due to the higher dislocation density for facilitating the metastable pit initiation and promoting the transition of metastable pits to the stable ones.
引用
收藏
页数：20
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