Correlative Microstructure Analysis and In Situ Corrosion Study of AISI 420 Martensitic Stainless Steel for Plastic Molding Applications

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Fältnamn	Indikatorer	Metadata
000		02876naa a2200361 4500
001		oai:DiVA.org:kth-208588
003		SwePub
008		170612s2017 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2085882 URI
024	7	a https://doi.org/10.1149/2.0531704jes2 DOI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Anantha, Krishnan Hariramabadranu KTH,Yt- och korrosionsvetenskap4 aut0 (Swepub:kth)u1fq4x4o
245	1 0	a Correlative Microstructure Analysis and In Situ Corrosion Study of AISI 420 Martensitic Stainless Steel for Plastic Molding Applications
264		c 2017-01-26
264	1	b Electrochemical Society,c 2017
338		a print2 rdacarrier
500		a QC 20170612
520		a In this work, the corrosion behavior of tempered AISI 420 martensitic stainless steel (MSS) was studied by in-situ atomic force microscopy (AFM) in 0.1M NaCl and correlated with the microstructure. Thermocalc simulation, dilatometry, and X-ray diffraction (XRD) were performed to investigate phase transformation which showed the formation of M3C, M7C3, and M23C6 type of carbides and also retained austenite. Optical microscopy, scanning electron microscopy (SEM), and AFM characterization revealed undissolved carbides and tempering carbides in the martensitic matrix. Volta potential mapping measured by scanning Kelvin probe force microscopy (SKPFM) indicated higher electrochemical (practical) nobility of the carbides with respect to the martensitic matrix whereas regions adjacent to carbides showed lower nobilities due to chromium depletion. Open circuit potential and cyclic potentiodynamic polarization measurements showed metastable corrosion activities associated with a weak passive behavior and a risk for localized corrosion along certain carbide boundaries. In-situ AFM measurements revealed selective dissolution of certain carbide interphases and martensitic inter-lath regions indicating higher propensity to localized corrosion.
650	7	a TEKNIK OCH TEKNOLOGIERx Materialteknik0 (SwePub)2052 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Materials Engineering0 (SwePub)2052 hsv//eng
700	1	a Örnek, Cemu KTH,Yt- och korrosionsvetenskap4 aut0 (Swepub:kth)u1y3d1oe
700	1	a Ejnermark, Sebastian4 aut
700	1	a Medvedeva, Anna4 aut
700	1	a Sjöström, Johnny4 aut
700	1	a Pan, Jinshanu KTH,Yt- och korrosionsvetenskap4 aut0 (Swepub:kth)u17ks6cf
710	2	a KTHb Yt- och korrosionsvetenskap4 org
773	0	t Journal of the Electrochemical Societyd : Electrochemical Societyg 164:4, s. C85-C93q 164:4<C85-C93x 0013-4651x 1945-7111
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208588
856	4 8	u https://doi.org/10.1149/2.0531704jes

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Av författaren/redakt...: Anantha, Krishna ...; Örnek, Cem; Ejnermark, Sebas ...; Medvedeva, Anna; Sjöström, Johnny; Pan, Jinshan

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