中国物理B ›› 1994, Vol. 3 ›› Issue (8): 567-572.doi: 10.1088/1004-423X/3/8/002

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DISSOLUTION OF IRON TO COPPER IN Fe60Cu40 ALLOY BY MECHANICAL ALLOYING AND SUBSEQUENT DECOMPOSITION

庄育智1, 马学鸣2, 董远达2, 杨元政3, 王根苗4   

  1. (1)Department of Mechanical Engineering (2), South China University of Technology, Guangzhou 510641, China; (2)Department of Material Science and Engineering, Shanghai University of Technology, Shanghai 200072, China; (3)Department of Mechanical Engineering (2), South China University of Technology, Guangzhou 510641, China;Department of Mechanical Engineering (2), South China University of Technology, Guangzhou 510641, China; (4)Laboratory of Structure Analysis, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:1993-07-26 修回日期:1994-03-11 出版日期:1994-08-20 发布日期:1994-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China and the Laboratory of Structure Analysis, University of Science and Technology of China.

DISSOLUTION OF IRON TO COPPER IN Fe60Cu40 ALLOY BY MECHANICAL ALLOYING AND SUBSEQUENT DECOMPOSITION

YANG YUAN-ZHENG (杨元政)ab, MA XUE-MING (马学鸣)c, WANG GEN-MIAO (王根苗)d, DONG YUAN-DA (董远达)c, ZHUANG YU-ZHI (庄育智)b   

  1. a Department of Mechanical Engineering (2), South China University of Technology, Guangzhou 510641, China; b Institute of Metal Research, Academia Sinica, Shenyang 110015, China; c Department of Material Science and Engineering, Shanghai University of Technology, Shanghai 200072, China; dLaboratory of Structure Analysis, University of Science and Technology of China, Hefei 230026, China
  • Received:1993-07-26 Revised:1994-03-11 Online:1994-08-20 Published:1994-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China and the Laboratory of Structure Analysis, University of Science and Technology of China.

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摘要： A metastable alloy with composition Fe60Cu40 can be prepared in single phase of a fcc structure by mechanical alloying, although Fe-Cu system is virtually immiscible in its equilibrium state at ambient temperature. The M?ssbauer spectra of this supersaturated solid solution could be fitted by two subspectra whose hyperfine magnetic fields are 200 kOe and 250kOe. In this metastable alloy, the iron atoms at the interface are easy to form clusters characterized as α-Fe at a temperature below 250℃, whereas the iron atoms in the body will cluster together at a higher temperature above 350℃ and behave as γ-Fe, and then transform to ferromagnetic bcc iron occurs.

Abstract: A metastable alloy with composition Fe60Cu40 can be prepared in single phase of a fcc structure by mechanical alloying, although Fe-Cu system is virtually immiscible in its equilibrium state at ambient temperature. The M$\ddot{\rm o}$ssbauer spectra of this supersaturated solid solution could be fitted by two subspectra whose hyperfine magnetic fields are 200 kOe and 250kOe. In this metastable alloy, the iron atoms at the interface are easy to form clusters characterized as $\alpha$-Fe at a temperature below 250℃, whereas the iron atoms in the body will cluster together at a higher temperature above 350℃ and behave as $\gamma$-Fe, and then transform to ferromagnetic bcc iron occurs.

中图分类号:  (Phase equilibria)

  • 64.75.-g
81.20.Ev (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation) 76.80.+y (M?ssbauer effect; other γ-ray spectroscopy) 75.50.Bb (Fe and its alloys) 61.43.Gt (Powders, porous materials)