静水圧力下における多結晶体カドミウムの流動応力に及ぼす結晶粒径の影響

概要

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The effect of grain size on the increase of flow stress of polycrystalline cadmium due to hydrostatic pressure was investigated. Tensile tests and pressure change tests were carried out under 10 MPa and 600 MPa on various specimens with different grain sizes. The results obtained are summarized as follows. (1) A strain softening phenomenon was observed on the specimens when hydrostatic pressure was changed from 10MPa to 600 MPa. The amount of decrease of the flow stress under 600 MPa decreased with increasing prestrain at l0 MPa, and it was larger for the 18pm grain size specimen than for the 36l/m one. (2) The flow stress at a particular strain value was able to be related to the grain size d by the same form as the Hall-Petch equation,
社団法人日本材料学会の論文
1987-04-15