On the Variation of Young’s Modulus (<I>E</I>) of 65-35 Brass Resulting from Rolling and Annealing

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  • 65-35黄銅の冷間圧延と焼鈍によるヤング率の変化について
  • 65-35 オウドウ ノ レイカン アツエン ト ショウドン ニ ヨル ヤングリツ ノ ヘンカ ニ ツイテ
  • On the Variation of Young&rsquo;s Modulus (<I>E</I>) of 65-35 Brass Resulting from Rolling and Annealing

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Abstract

The variation of Young’s modulus of 65-35 brass resulting from cold-rolling and annealing has been studied by means of longitudinal-vibration method. The results obtained are as follows: (1) The variation of E resulting from cold-rolling was the same as that of 7-3 brass in all measuring directions. (2) The variation of E resulting from annealing showed various features according to the annealing temperature, the degree of rolling (reduction) and the measuring direction. (3) The anisotropy of E resulting from 30∼40%-rolling disappeared by annealing above the recrystallization temperature. (4) The anisotropy of E resulting from full annealing at 600°C, 700°C, after cold-rolling was different in the case of over 90% reduction as compared with the case of reduction to 80%. (5) The anisotropy of E resulting from annealing after over-90%-reduction was almost the same as that obtained before annealing excepting the case of 450°C annealing. (6) In the case of over-90%-reduction, the anisotropy of E resulting from 450°C annealing was different from that obtained by annealing at above 600°C.

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