ON THE TRANSFORMATION IN HIGH PURITY IRON BY SUPER-RAPID HEATING.

Yoshiyuki Miwa, Hidetaka One

研究成果: Article

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The A//c//3 ( alpha yields gamma ) transformation behavior during super-rapid heating of up to 10**6 degree C/sec and the isothermal transformation during heating at various temperatures over A//e//3 were investigated for a high-purity iron using newly designed apparatuses. The A//c//3 transformation temperature at a rate of 10**6 degree C/sec in a vacuum of 10** minus **6 Torr and in air was determined by a PbS cell heat radiator. It was detected that the A//c//3 point at each heating rate in vacuum is higher than in air. The A//c//3 transformation temperature rises above the equilibrium temperature with increasing heating rate up to 10**6 degree C/sec. The alpha yields gamma isothermal transformation process was continuously observed by measuring the change in electric resistance. It was considered that alpha yields gamma transformation in high-purity iron might proceed intermittently by a diffusionless mechanism.

元の言語English
ページ(範囲)559-564
ページ数6
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
40
発行部数6
出版物ステータスPublished - 1976 6
外部発表Yes

ASJC Scopus subject areas

  • Metals and Alloys

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