Measurement and prediction of residual stresses in a titanium metal matrix composite ring

Abstract

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Interfacial shear strength behaviour of Ti/SiC metal matrix composites at room and elevated temperature

“…The decrease in interfacial frictional sliding stress with increasing temperature suggests that the interfacial shear stress would be zero at $650°C. This is somewhat lower than is suggested by the results of Favre et al In this context, it is noteworthy that the temperature at which Ti/SiC composite systems are effectively stress free [52] has previously been measured to be 675°C [34] and 700°C [35]. This suggests that the temperature at which the radial thermal stresses fall to zero is the key, as might be expected if the friction stress is simply the result of Coulomb friction and the Coulomb friction coefficient remains close to 0.4 with increasing temperature.…”

“…A temperature drop of 700°C was chosen as being broadly representative of the thermal residual stresses after cooling from the processing temperature [34,35].…”