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Title:
MANUFACTURE OF FINE CRYSTAL ALLOY
Document Type and Number:
Japanese Patent JPH01275717
Kind Code:
A
Abstract:

PURPOSE: To manufacture the title alloy having high strength, viscosity and less characteristic dispersion by subjecting an Fe-Co-Ni amorphous alloy to crystallizing heat treatment and homogenizing heat treatment at a specific temp.

CONSTITUTION: An amorphous alloy contg., by atom, 0.1W10% Cu and at least one kind selected from the group consisting of 0.1W30% Nb, W, Ta, Zr, Hf, Ti and Mo is prepd. The alloy is then subjected to heat treatment for the purpose of crystallization at 450W700°C to form superfine crystal grains of solid solution. The alloy is thereafter subjected to heat treatment at ≥700°CW the temp. below the m.p. of the alloy. As the result, the grains are formed in such a manner that composite boride is uniformly dispersed therein to reduce the amt. of elements which form solid solution in the solid solution, by which the alloy is provided with viscosity. In this way, the superfine crystal alloy having high strength, viscosity and less characteristic dispersion can be manufactured.


Inventors:
YOSHIZAWA KATSUTO
YAMAUCHI KIYOTAKA
Application Number:
JP10647688A
Publication Date:
November 06, 1989
Filing Date:
April 28, 1988
Export Citation:
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Assignee:
HITACHI METALS LTD
International Classes:
C22F1/10; C21D6/00; C21D9/02; C22C38/00; C22F1/00; (IPC1-7): C21D6/00; C21D9/02; C22C38/00; C22F1/10