銅の応力,ひずみ速度および温度の間の構成関係

概要

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Strain-rate and temperature dependence on the flow stress of OFHC copper is discussed. Tensile tests were made ranging in strain-rate from 2.5 × 10^<-4> s^<-1> to 1 s^<-1> and temperature from 25℃ to 600℃ with a cam-plastometer type testing machine built as a trial. Experimental results were compared with a theory proposed previously by the first author for constitutive relationships of elastic/visco-plastic materials. On the temperature and strain-rate range discussed in this paper, it was recognized that three fields of deformation mechanism exist. The proposed equation represented well constitutive relation in individual field and correlation of neighboring fields. Significant variations of final reduction in area and total elongation also were discussed in connection with transition of deformation mechanism.
一般社団法人日本機械学会の論文
1990-10-25