Dwell fatigue life dispersion of a near alpha titanium alloy

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TypeArticle
Journal titleInternational Journal of Fatigue
Volume31
Issue3
Subjecttitanium alloy; fatigue; dwell loading; strength; damage
AbstractEarly failure during dwell-fatigue of titanium alloys is a research of interest as it directly drives the in-service life of critical parts in turbines. A study was undertaken to examine the evolution of life and strain in six specimens made of near-alpha titanium alloy (IMI 834) during dwell-fatigue loading conditions. The strain accumulation in dwell-fatigue test for one sample was significantly different. This specimen presents a different ultrasonic response from that of the other specimens, that is ultrasonic measurements reveal a different macro-texture for this sample. When this specimen is excluded, it is found that ultrasonic speed correlates well with dwell-fatigue life for the remaining samples. This paper evaluates the usefulness of ultrasound waves to predict the strain and the dwellfatigue life of a titanium alloy.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Industrial Materials Institute
Peer reviewedNo
NRC number50629
NPARC number14299103
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Record identifier743e7739-e014-4f82-b118-25786d2e5e9c
Record created2010-02-11
Record modified2016-05-09
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