Surface Nanocrystallization of Nb-Ti Stabilized 439M Ferritic Stainless Steel

Autor:	Yao-chun Zhang, Chengjia Shang, Dong-yang Li, Chao Chen
Rok vydání:	2014
Předmět:	Surface coating Materials science Mechanics of Materials Service life Metallurgy Metallic materials Materials Chemistry Metals and Alloys Surface layer Dislocation Electrochemistry Punching Corrosion
Zdroj:	Journal of Iron and Steel Research International. 21:891-896
ISSN:	2210-3988 1006-706X
DOI:	10.1016/s1006-706x(14)60158-8
Popis:	A new nanocrystallization process was designed, which included punching the surface coating to generate dislocation network or cells and recovery treatment to turn the dislocation cells into nano-sized grains. The effort was made to increase the service life of Nb-Ti stabilized 439M stainless steel surface with medium passive ability, particularly to enhance the outmost surface layer by nanocrystallization for improving resistances to corrosion. Electrochemical properties, electron work functions (EWFs), nano-mechanical properties of the nanocrystallized surfaces were investigated. It was demonstrated that the nanocrystallized 439M stainless steel surface exhibited improved resistance to corrosion in 0. 5 mol/L H2SO4 solution. However, the nanocrystallized 439M stainless steel surface exhibited decreased resistance to corrosion in 3. 5% NaCl solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::19a9c8219aaf45e5439a0d0edb32a96a https://doi.org/10.1016/s1006-706x(14)60158-8 Zobrazit plný text záznamu Full Text from ScienceDirect Full text from SpringerLink