COMPARISON OF TWO TECHNIQUES FOR EVALUATING SPHERICAL INDENTATION DATA

Flow curves of 15Kh2MFA, Sv 08Kh19N10G2B and 08Kh18N10T steels used for fabrication of WWER-440 nuclear reactor pressure vessel and core internals were obtained using the automated ball indentation (ABI) test technique and compared with flow curves evaluated from the same measured load-displacement...

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Bibliographic Details
Published in:	Acta Polytechnica CTU proceedings Vol. 27; pp. 136 - 140
Main Authors:	Materna, Aleš, Haušild, Petr, Ondráček, Jan
Format:	Journal Article
Language:	English
Published:	CTU Central Library 11-06-2020
Subjects:	automatic ball indentation, oliver-pharr method, pile-up, true stress-strain curve
Online Access:	Get full text
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Summary:	Flow curves of 15Kh2MFA, Sv 08Kh19N10G2B and 08Kh18N10T steels used for fabrication of WWER-440 nuclear reactor pressure vessel and core internals were obtained using the automated ball indentation (ABI) test technique and compared with flow curves evaluated from the same measured load-displacement data and widely used Oliver-Pharr method. Differences in results obtained by both studied methods do not exceed 12 % and are attributed to the amount of material pile-up.
ISSN:	2336-5382 2336-5382
DOI:	10.14311/APP.2020.27.0136