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Enhancement in hardness and corrosion resistance of AISI 420 martensitic stainless steel via friction stir processing
L. Pan2; C.T. Kwok1,2; K.H. Lo1,2
2019-01-15
Source PublicationSurface and Coatings Technology
ISSN0257-8972
Volume357Pages:339-347
Abstract

Surface modification of martensitic stainless steel AISI 420 was achieved using friction stir processing (FSP) with a W–Re pinless tool. The microstructure, hardness and corrosion resistance of the FSPed 420 fabricated at various traverse speeds (150 to 250 mm/min) of the tool were investigated and compared with annealed and conventionally hardened 420. The depth and width of the FSPed zone decrease as the traverse speed increases due to decrease in heat input. The volume fraction of retained austenite at the center and advancing side of the FSPed zone increases with the traverse speed attributed to the high cooling rate. The hardness (up to 697 HV) and corrosion resistance in 3.5 wt% NaCl solution at 25 °C of the FSPed specimens are higher than that of the conventionally hardened one.

KeywordCorrosion Friction Stir Processing Hardness Martensitic Stainless Steel
DOIhttps://doi.org/10.1016/j.surfcoat.2018.10.023
URLView the original
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
WOS IDWOS:000455691100053
PublisherELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, University of Macau, China
2.Institute of Applied Physics and Materials Engineering, University of Macau, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
L. Pan,C.T. Kwok,K.H. Lo. Enhancement in hardness and corrosion resistance of AISI 420 martensitic stainless steel via friction stir processing[J]. Surface and Coatings Technology,2019,357:339-347.
APA L. Pan,C.T. Kwok,&K.H. Lo.(2019).Enhancement in hardness and corrosion resistance of AISI 420 martensitic stainless steel via friction stir processing.Surface and Coatings Technology,357,339-347.
MLA L. Pan,et al."Enhancement in hardness and corrosion resistance of AISI 420 martensitic stainless steel via friction stir processing".Surface and Coatings Technology 357(2019):339-347.
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