Polycrystal creep in the microplastic stress range

Е. Ф. Дударев; Г. П. Почивалова

doi:10.1007/bf00559446

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Polycrystal creep in the microplastic stress range

Russian Physics Journal 1993

Е. Ф. Дударев, Г. П. Почивалова

Summary

A microcreep theory was developed incorporating microplastic strain in polycrystalline materials under static loading, with experimental validation showing mobile dislocation density decreases during microcreep. This model improves prediction of long-term dimensional stability in precision metal components subjected to sustained stresses.

A microcreep theory has been developed for polycrystalline materials, which incorporates the microplastic strain in the aggregate on static loading. Experiments have been performed on the creep laws for polycrystalline metals and alloys, and it is found that the theory fits the experiments. The mobile-dislocation density decreases during microcreep.

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