日本金属学会誌

J. Japan Inst. Metals, Vol. 38, No. 10 (1974),
pp. 937-941

Hardness Anisotropy of Sendust Alloy Single Crystal

Kazumi Shimotori1, Masami Miyauchi1 and Yoshiharu Fukasawa1

1Metals and Ceramics Laboratory, Research and Development Center, Tokyo-Shibaura Electric Co., Ltd., Kawasaki

Abstract:

Sendust alloy (Fe-9.5%Si-5.0%Al) is nowadays one of the most suitable materials for the head in the video tape recorder, but it is necessary to improve its wear resistance. A solution of this problem is to utilize a crystal anisotropy of the wear resistance. In the present study the Knoop hardness measurements were made on the (001), (011) and (111) planes of a single crystal of Sendust, because the indentation hardness of the material is known to be closely related to the abrasive wear resistance in general. The results are summarized as follows:
(1) Single crystals were obtained by passing an electron beam floating zone at a zone velocity of 2.84 mm/hr.
(2) The Knoop hardness (KHN) of each plane varies characteristically as follows:


(Received 1974/04/8)

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