Compressive Strength of Mild Steel at High Strain Rate and at High Temperature

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概要

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• This paper deals with the dynamic behaviour of 0.03% C steel at high temperature (up to 700℃) within the range of strain rates of 10〜10^3/sec. The effects of temperature and strain rate on the compressive strength were clarified experimentally and the particular behaviour at the temperature near blue brittleness was explained using the Cottrell's theory. The dynamic stress to cause a certain amount of strain rises with the increase of strain rate at room temperature, but the stress is scarcely affected by the strain rate at 200〜600℃, and then the stress increases again with the strain rate at 700℃. The blue brittleness occurs at higher temperature with the increase of strain rate. For the static test and the dynamic tests of 10^2/sec, 3×10^2/sec and 10^3/sec of strain rate, the blue brittleness temperature is about 200,550,600 and 700℃ respectively.

• 一般社団法人日本機械学会の論文

著者

• Tanaka Kichinosuke

  Faculty Of Engiineering Kyoto University

• KINOSHITA Motohiro

  Faculty of Engineering, Kyoto University

• Kinoshita Motohiro

  Faculty Of Engineering Kyoto University

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