EFFECT OF RARE EARTH ON MEDIUM-TEMPERATURE INTERNAL FRICTION OF COMMERCIALLY PURE IRON

Abstract

Abstract: The strong effect of rare earth(RE)on medium-temperature internal friction(IF)of commercially pure iron is closely related to the heat treatment.The RE added into iron has an alloying effect.The Snoek-Ke-Kster(briefly SKK)peak lower as the aging temperature in- creases from 150℃ to 450℃,but it still exists even aged at 600℃.However,the SKK peak temperature T_p does not simply falls as the ascending of aging temperature,it rises again at 600℃ aging.

Key words: internal friction, iron, rare earth

JI Jingwen LAI Zuhan WU Yuqin ZHANG Guofu Northeast University of Technology,Shenyang,ChinaLI Guangyi Institute of Metal Research,Academia Sinica,Shenyang,China. EFFECT OF RARE EARTH ON MEDIUM-TEMPERATURE INTERNAL FRICTION OF COMMERCIALLY PURE IRON[J]. Acta Metallurgica Sinica (English Letters), 1992, 5(3): 158-165.

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EFFECT OF RARE EARTH ON MEDIUM-TEMPERATURE INTERNAL FRICTION OF COMMERCIALLY PURE IRON

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