Irregular shape change of tungsten/matrix interface in tungsten

Details Irregular shape change of tungsten/matrix interface in tungsten Irregular shape change of tungsten/matrix interface in tungsten

1998-02-27

1999-09-21

Jenkins, Daniel J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Post sintering operation

419 58, B22F 324

Patent

active

059565594

ABSTRACT:
A method for producing an irregular tungsten/matrix interface in tungsten based heavy alloy is disclosed. The method involves a cyclic heat treatment and resintering at above liquidus temperature for tungsten heavy alloys consisting of 80 to 98 weight % tungsten and remainder of matrix phase. The sintered specimens are cyclically heat treated at above 1000.degree. C. and resintered at liquidus temperature of the matrix phase for one minute to 4 hours at a constant temperature.

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Heung-Sub Song, et al., "Undulation of W/Matrix Interface by Resintering of Cyclically Heat-Treated W-Ni-Fe Heavy Alloys", Metallurgical and Materials Transactions A, vol. 28A, pp. 485-489 (Feb. 1997).

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