Number of the records: 1

Comparison of microstructural properties and Charpy impact behaviour between different plates of the Eurofer97 steel and effect of isothermal ageing

SYSNO ASEP	0369890
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Comparison of microstructural properties and Charpy impact behaviour between different plates of the Eurofer97 steel and effect of isothermal ageing
Author(s)	Stratil, Luděk (UFM-A)_ORCID Hadraba, Hynek (UFM-A)_{RID, ORCID} Buršík, Jiří (UFM-A)_{RID, ORCID} Dlouhý, Ivo (UFM-A)_{RID, ORCID}
Number of authors	4
Source Title	Journal of Nuclear Materials. - : Elsevier - ISSN 0022-3115 Roč. 416, č. 3 (2011), s. 311-317
Number of pages	7 s.
Language	eng - English
Country	NL - Netherlands
Keywords	Eurofer´97 ; DBTT ; impact behaviour ; fracture behaviour ; carbide coarsening ; hardness
Subject RIV	JG - Metallurgy
R&D Projects	GAP108/10/0466 GA ČR - Czech Science Foundation (CSF)
	GA106/08/1397 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000296115900010
DOI	10.1016/j.jnucmat.2011.06.018
Annotation	The microstructure and fracture properties of the Eurofer97 steel plates of thickness 14 mm and 25 mm were investigated in as-received state and in state after long-term thermal ageing (550 °C/5000 h). Detailed microstructure studies were carried out by means of optical light, electron and quantitative electron microscopy. Mechanical properties were evaluated by means of Charpy impact testing and hardness testing and fracture surfaces were fractographically analysed in macro and microscales. The microstructure of the Eurofer97 consisted of tempered martensite with M23C6 and MX precipitates. Microstructure of 14 mm plate was more homogenous and fine grained than 25 mm plate. Due to different microstructure the tDBTT of thicker plate was on +10 °C higher than for 14 mm plate for which reached −60 °C. Slight microstructural changes on the level of subgrain consisting of their partial recrystallization and slight carbide coarsening were observed after applied ageing. The isothermal ageing caused evident shift in tDBTT about +5 °C, which was most likely caused by recrystallization of subgrains.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2012

Number of the records: 1