Počet záznamů: 1
Micromechanical Aspects of Transgranular and Intergranular Failure Competition
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SYSNO ASEP 0355778 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Micromechanical Aspects of Transgranular and Intergranular Failure Competition Tvůrce(i) Dlouhý, Ivo (UFM-A) RID, ORCID
Tarafder, M. (IN)
Hadraba, Hynek (UFM-A) RID, ORCIDZdroj.dok. Key Engineering Materials - ISSN 1013-9826
Roč. 465, - (2011), s. 399-402Poč.str. 4 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova intergranular fracture ; cleavage ; fracture toughness Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GAP107/10/0361 GA ČR - Grantová agentura ČR CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000291704700092 DOI 10.4028/www.scientific.net/KEM.465.399 Anotace Quantification of characteristics that govern intergranular fracture initiation and propagation of this fracture micromechanism in competition with cleavage one is main aim of the paper. A NiCr steel of commercial quality and the same steel with an increased content of impurity elements, Sn and Sb, were used. Step cooling ageing was applied in order to induce intergranular embrittlement. Standard and pre-cracked Charpy type specimens were both tested in three-point bending to determine fracture toughness characteristics. In order to characterise the quantitative differences in fracture surfaces roughness a fractal analysis was applied. A boundary level of fractal dimension has been determined to be 1.12: fracture surface roughness with a higher value reflects high level of intergranular embrittlement and thus fracture resistance degradation. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2011
Počet záznamů: 1