期刊
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
卷 25, 期 8, 页码 805-816出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0734-743X(01)00006-9
关键词
miniaturized impact specimen; fracture toughness; DBTT; degradation; normalization
Miniaturized specimen technology is inevitable when the amount of available material for test is limited. In this study, miniaturized Charpy V-notched specimens of 1Cr-1Mo-0.25 V rotor steel with five different aging periods were artificially prepared by an isothermal aging heat treatment at 630 degreesC and tested. For the miniaturized specimens, two different types of specimens with or without side groove were utilized. A correlation between the ductile brittle transition temperature (DBTT) obtained by the miniaturized specimen and that by the standard specimen was investigated. In addition, the relationship between fracture toughness and DBTT by the miniaturized specimen of degraded 1Cr-1Mo-0.25V rotor steels was proposed. (C) 2001 Published by Elsevier Science Ltd.
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