Method for plastic-working ingots of heat-resistant alloy contai

Details Method for plastic-working ingots of heat-resistant alloy contai Method for plastic-working ingots of heat-resistant alloy contai

1990-03-19

1991-05-28

Andrews, Melvyn J.

Metal treatment

Compositions

Heat treating

148313, C22F 110

Patent

active

050191799

ABSTRACT:
There is disclosed a method for plastic-working a heat-resistant alloy containing boron, which is in the form of an ingot. The ingot of the alloy is first subjected to hot working. Subsequently, annealing, acid-washing and cold working are carried out on the hot-worked blank material to provide a worked product. The hot working and the annealing are both carried out at a temperature ranging from 1,000.degree. C. to 1,150.degree. C.

REFERENCES:
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patent: 4401480 (1983-08-01), Crombie, III
patent: 4820353 (1989-04-01), Chang
patent: 4820354 (1989-04-01), Nozmy
patent: 4935201 (1990-06-01), Inoue et al.
Patent Abstracts of Japan vol. 11, No. 229 (C-436) [2676], Jul. 25, 1987.
Meetham, The Development of Gas Turbine Materials, 1981, pp. 296-298, Applied Science Publishing, London, GB.

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