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AFM study of surface relief evolution in 316L steel fatigued at low and high temperatures

SYSNO ASEP	0355179
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	AFM study of surface relief evolution in 316L steel fatigued at low and high temperatures
Author(s)	Man, Jiří (UFM-A)_{RID, ORCID} Valtr, B. (CZ) Weidner, A. (DE) Petrenec, Martin (UFM-A) Obrtlík, Karel (UFM-A)_{RID, ORCID} Polák, Jaroslav (UFM-A)_{RID, ORCID}
Source Title	Procedia Engineering. - Amsterdam : Elsevier BV Roč. 2, č. 1 (2010), s. 1625-1633
Number of pages	9 s.
Action	Fatigue 2010
Event date	06.06.2010-11.06.2010
VEvent location	Praha
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	Fatigue crack initiation ; 316L steel ; Persistent slip band (PSB) ; Extrusion ; Intrusion ; Atomic force microscopy (AFM)
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GAP108/10/2371 GA ČR - Czech Science Foundation (CSF)
	1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GA106/06/1096 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000278762900173
DOI	10.1016/j.proeng.2010.03.175
Annotation	Surface relief of austenitic stainless 316L steel cycled with constant plastic strain amplitude at 93, 173 and 573 K to different early stages of fatigue life was studied using atomic force microscopy (AFM) and high resolution scanning electron microscopy (SEM–FEG). Characteristic features of surface relief topography and the evolution of persistent slip markings (PSMs) were documented for all temperatures. At 173 and 573 K PSMs consist of growing extrusions accompanied later by parallel intrusions while at the lowest temperature only static extrusions were found. In addition to distinct true PSMs fine slip markings with peakto-valley topography covering homogeneously different parts of grains and deformation induced martensite were detected in 316L steel fatigued at 93 K. Experimental results on the PSM topography and the kinetics of extrusion growth are discussed in relation to point defect models of surface relief formation leading to fatigue crack initiation.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2011

Number of the records: 1