Rapid heat treatment of nonferrous metals and alloys to obtain g

Details Rapid heat treatment of nonferrous metals and alloys to obtain g Rapid heat treatment of nonferrous metals and alloys to obtain g

1994-02-23

1995-09-05

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148421, 148670, 420902, B23K 900

Patent

active

054475805

ABSTRACT:
A method for heat treatment of nonferrous metals and alloys is described which comprises the steps of providing a billet of material comprising nonferrous metal or alloy; rapidly heating the billet to a temperature higher than the transus or solvus temperature of the material whereby a microstructure of uniform single phase grains is formed in a surface layer of preselected depth or other selected region in the billet with the starting microstructure of the material central of the billet; and cooling the billet to room temperature to preserve in the billet surface the high temperature single phase microstructure or a transformation product thereof.

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patent: 4279667 (1981-07-01), Anthony et al.
patent: 4401477 (1983-08-01), Clauer et al.
patent: 4648912 (1987-03-01), Sabol et al.
patent: 4872926 (1989-10-01), Giacobe
patent: 4909859 (1990-03-01), Nazmy et al.
patent: 5354963 (1994-10-01), Mueller et al.

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