高張力鋼板の塑性異方性に及ぼす引張ひずみと引張ひずみ速度の影響

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書誌事項

タイトル別名
  • Effects of Tensile Strain and Tensile Strain Rate on Plastic Anisotropy of High-Tensile Steel Sheets
  • コウチョウリョク コウハン ノ ソセイ イホウセイ ニ オヨボス ヒッパリヒズミ ト ヒッパリヒズミ ソクド ノ エイキョウ

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説明

Problems related to differences in product dimensions occur in each case of the trial press working, the actual press working and the actual press working at different speeds. There are large differences in product dimensions of high-tensile sheet steels compared with that of SPCC (Cold-reduced carbon steel sheets). This study is based on the supposition that the cause of product dimension differences depends on changes in the material properties due to the working quantity and the working speed. To understand the actual conditions of this problem, the working quantity was replaced with strain and the working speed was replaced with strain rate, and effects of strain and strain rate on the r and n values were investigated. Three kinds of high-tensile sheet steels with SPCC were then compared. A uniaxial tension test was used, with specimens cut from the sheet at 0, 45 and 90 degrees to the rolling direction. A digital video camera was used to record every moment of change in the rectangle pattern printed on the specimens. An important result from the investigation showed that DP (Dual Phase) sheet steels have a larger dependence of strain on the n value compared with SPCC.

収録刊行物

  • 塑性と加工

    塑性と加工 47 (542), 200-204, 2006

    一般社団法人 日本塑性加工学会

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