Study on the Secondary-Workability of 18% Chromium Stainless Steel

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  • 18クロム・ステンレス鋼の2次加工性に関する研究
  • 18 クロム ステンレス コウ ノ 2ジ カコウセイ ニ カンスル ケンキュウ

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Abstract

This investigation was carried out on the r-value of the 18% chromium stainless steel, to obtain a fundamental knowledge of the secondary-workability.<BR>The results obtained are as follows:<BR>(1) The r-values of the fracture points of AISI type 430 stainless steel annealed specimens are constant and are not affected by strain rate.<BR>(2) The r-values of the {001}⟨110⟩ regions in the specimens compressed to the III stage region (\dotε=0.0325/sec, ε=0.4, n=0.34) become the increasing function of strain, while the r-values of the specimens compressed in the II stage region (\dotε=0.0325/sec, ε=<0.062, n=1.006) become the decreasing function of strain after the maximum point at the ε=0.1.<BR>(3) The r-values of the specimens stretched in the TD direction in the II stage region (\dotε=0.0325/sec, ε=0.07) are constant for the whole strain regions and have no strain rate dependence.<BR>(4) The r-values of the specimens compressed in the II stage region (\dotε=38.3/sec, ε=0.07, n=0.855) are slightly affected by texture.

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