Supersolvus forging of ni-base superalloys

Metal treatment – Process of modifying or maintaining internal physical... – Treating consolidated metal powder – per se

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148677, 148556, 419 29, 419 42, C22F 110

Patent

active

055935192

ABSTRACT:
A method of supersolvus forging is described for Ni-base superalloys, particularly those which comprise a mixture of .gamma. and .gamma.' phases, and most particularly those which contain at least about 40 percent by volume of .gamma.'. The method permits the manufacture of large grain size forged articles having a grain size in the range of 50-150 .mu.m. The method comprises the selection of a fine-grained forging preform of a Ni-base superalloy. Supersolvus forging in the range of 0.degree.-100.degree. F. above the alloy solvus temperature then performed at slow strain rates in the range of 0.01-0.001 s.sup.-1. Subsequent supersolvus annealing followed by controlled cooling may be employed to control the distribution of the .gamma.', and hence influence the alloy mechanical and physical properties. The method may also be used to produce location specific grain sizes and phase distributions within the forged article.

REFERENCES:
patent: 4579602 (1986-04-01), Pavlonis et al.
patent: 4685977 (1987-08-01), Chang
patent: 4820358 (1989-04-01), Chang
patent: 5302217 (1994-04-01), Gostic et al.
patent: 5393483 (1995-02-01), Chang
A Dictionary of Metallurgy; A. D. Merriman 1958 pp. 114-115.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Supersolvus forging of ni-base superalloys does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Supersolvus forging of ni-base superalloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supersolvus forging of ni-base superalloys will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1385227

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.