Crystalline Transformations in Amorphous Fe_<73.5>Cu_1Nb_3Si_<16.5>B_6 Alloy

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概要

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• The crystallization behavior of the amorphous Fe_<73.5>Cu_1Nb_3Si_<16.5>B_6 alloy has been investigated by Mossbauer spectroscopy and X-ray diffractometry. Fine crystalline grains of about 10 nm diameter are produced uniformly by annealing at 550℃ for 1 hour in nitrogen atmosphere. The predominant crystalline phase is assigned to the Fe-Si alloy with DO_3 structure and neither intermetallic compounds nor an amorphous phase can be recognized in the Mossbauer spectrum. The addition of 1 at% Cu to amorphous Fe-Si-B merely brings about a lowering of the crystallization temperature, while that of 3 at% Nb leads to a rise in the crystallization temperature and simultaneous formation of Fe-Si alloy and Fe_3(Si, B). Their effects simultaneously influence the crystallization behavior in the amorphous Fe_<73.5>Cu_1Nb_3Si_<16.5>B_6 alloy, and lead to the production of Fe-Si alloy with uniform ultrafine grains. Annealing at 720℃ for 1 hour gives rise to the growth of the fine grains and the formation of Fe_3(Si, B).

• 社団法人応用物理学会の論文
• 1990-03-20

著者

• Fujinami M

  Nippon Steel Corp. Kanagawa Jpn

• Fujinami M

  Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky

• Fujinami Masanori

  Materials Characterization Research Laboratory Nippon Steel Corporation

• HASHIGUCHI Yoshihiro

  Materials Characterization Research Laboratory, Nippon Steel Corporation

• Hashiguchi Yoshihiro

  Materials Characterization Research Laboratory Nippon Steel Corporation

• YAMAMOTO Tsuyoshi

  Materials Research Laboratory-IV, Nippon Steel Corporation

• Yamamoto Tsuyoshi

  Materials Research Laboratory-iv Nippon Steel Corporation

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• Crystalline Transformations in Amorphous Fe_Cu_1Nb_3Si_B_6 Alloy

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