高温・弾性追従場における繰返し変形挙動　Ｉ　　ＳＵＳ３０４鋼における応力およびひずみ挙動

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  • Cyclic elastic follow-up behavior at elevated temperature. (1st report Stress and strain behavior on 18Cr-8Ni steel)
  • コウオン ダンセイ ツイジュウバ ニ オケル クリカエシ ヘンケイ キョドウ

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This paper describes uniaxial cyclic elastic follow-up tests carried out on austenitic stainless steel SUS 304 at 700°C, and analyses of the test results. In the present tests, more of the starting points of elastic follow-up strain were beyond the elastic limit of the material. The analysis for stress and strain behavior which progressed under uniaxial elastic follow-up tests was performed by similar methods proposed in the previous paper. The stress and strain in the cyclic elastic follow-up process were estimated by an inelastic analysis based on Norton's law applied to a modified triangle of elastic follow-up. The agreement of the analysis and the experiment was very good. The plastic strain range, produced in the hysteresis loop, depended upon the stress which was elastically calculated on the triangle of elastic follow-up. The cyclic elastic follow-up behavior could also be estimated conservatively from the inelastic analysis.

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