期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 483-84, 期 -, 页码 262-265出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2006.12.159
关键词
accelerated creep; stress rupture; Inconel 718 alloy; creep life; stress exponent; activation energy
To evaluate the accelerated creep phenomena for ramjet combustor, the stress rupture tests for Inconel 718 alloy were performed at a temperature range of 649-760 degrees C and a stress range of 381-1093 MPa. The stress exponent, n, under the given conditions was obtained. Also, the activation energy, Delta H, was calculated from the experimental results. An empirical formula of accelerated creep rate for Inconel 718 alloy was calculated by computer simulation. The accelerated creep life of Inconel 718 alloy was evaluated by using Larson-Miller parameter. (C) 2007 Elsevier B.V. All rights reserved.
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