期刊
SCRIPTA MATERIALIA
卷 59, 期 8, 页码 818-821出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.06.028
关键词
creep damage; titanium alloy; nonlinear ultrasonic; harmonic generation
类别
资金
- efence Metallurgical Research Laboratory, Hyderabad
- DRDO, India
This paper deals with nonlinear domains (second harmonic amplitude) in order to evaluate creep damage in titanium alloy. Creep damage has been observed in the form of microvoids at primary alpha/transformed beta interface and the volume fraction of voids increases progressively with creep deformation. A good agreement between the experimental results and metallographic studies indicate the usefulness of the method for in-service evaluation of creep damage. A nonlinear ultrasonic technique was found to be significantly more sensitive for the assessment of creep damage. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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