Title: Fatigue-environment interactions in a SiC/Ti-15-3 composite
Abstract: Load-controlled isothermal and non-isothermal fatigue lives of a [0°]8 SiC/Ti-15-3 were evaluated at temperatures between 150 and 550 °C and a target strain range of about 0.45%. In non-isothermal fatigue tests, load was first cycled at minimum temperature and then temperature was cycled at zero load. For fatigue tests with peak temperatures at or above 300 °C, fatigue life was dramatically reduced compared to that at 150 °C. The shortest life was produced by the non-isothermal test with the greatest temperature range (ΔT = 400 °C) and highest peak temeperature (Tmax = 550 °C). Vacuum testing showed that much of the life reduction under isothermal and non-isothermal conditions was related to environmental effects, although the nature of the fatigue-environment interaction was decidedly different for the isothermal and non-isothermal test cycles which were studied.
Publication Year: 1993
Publication Date: 1993-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 6
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