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Room Temperature Nanoindentation Creep Characteristics and Strain Rate Sensitivity of AlCuCrFeMnWx High Entropy Alloys

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Document pages: 15 pages

Abstract: Nanoindentation creep behavior was studied on the AlCuCrFeMnWx (0, 0.05, 0.1 and 0.5 mol) high-entropy alloys which are prepared by spark plasma sintering. The effects of the indentation depth and holding load on creep behavior were studied. The experimental analysis indicates that the hardness, creep depth, creep strain rate and stress exponent are all reliant on the holding load. The main creep failure mechanism is dislocation creep at high indentation loads and self-diffusion at low indentation loads. Moreover, stress component was examined from the steady-state creep and the dominant creep deformation mechanism was discussed in detail.

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