Abstract
The present work aims to reveal the effect of crystallographic orientation on impression creep responses of single crystal alloys. For this purpose, crystal plasticity finite element (FE) method was employed to simulate the process of impression creep performed on [001]-, [011]- and [111]- oriented nickel based single crystal alloys. The determination of crystallographic creep parameters by impression creep was explored and compared among differently oriented single crystals. The result shows that the stress distribution and surface morphology induced by impression creep exhibit anisotropic patterns which are strongly dependent on crystallographic orientation. The determination of creep stress exponent is independent on crystallographic orientation.
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