Large forging manufacturing process
Abstract
A process for forging large components of Alloy 718 material so that the components do not exhibit abnormal grain growth includes the steps of: a) providing a billet with an average grain size between ASTM 0 and ASTM 3; b) heating the billet to a temperature of between 1750.degree. F. and 1800.degree. F.; c) upsetting the billet to obtain a component part with a minimum strain of 0.125 in at least selected areas of the part; d) reheating the component part to a temperature between 1750.degree. F. and 1800.degree. F.; e) upsetting the component part to a final configuration such that said selected areas receive no strains between 0.01 and 0.125; f) solution treating the component part at a temperature of between 1725.degree. F. and 1750.degree. F.; and g) aging the component part over predetermined times at different temperatures. A modified process achieves abnormal grain growth in selected areas of a component where desirable.
- Inventors:
-
- Latham, NY
- Niskayuna, NY
- Issue Date:
- Research Org.:
- General Electric Co., Schenectady, NY (United States)
- OSTI Identifier:
- 874538
- Patent Number(s):
- 6409853
- Assignee:
- General Electric Company (Schenectady, NY)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21J - FORGING
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- DOE Contract Number:
- FC21-95MC31176
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- forging; manufacturing; process; components; alloy; 718; material; exhibit; abnormal; grain; growth; steps; providing; billet; average; size; astm; heating; temperature; 1750degree; 1800degree; upsetting; obtain; component; minimum; strain; 0125; selected; reheating; final; configuration; receive; strains; 001; solution; treating; 1725degree; aging; predetermined; times; temperatures; modified; achieves; desirable; grain size; grain growth; average grain; /148/
Citation Formats
Thamboo, Samuel V, and Yang, Ling. Large forging manufacturing process. United States: N. p., 2002.
Web.
Thamboo, Samuel V, & Yang, Ling. Large forging manufacturing process. United States.
Thamboo, Samuel V, and Yang, Ling. Tue .
"Large forging manufacturing process". United States. https://www.osti.gov/servlets/purl/874538.
@article{osti_874538,
title = {Large forging manufacturing process},
author = {Thamboo, Samuel V and Yang, Ling},
abstractNote = {A process for forging large components of Alloy 718 material so that the components do not exhibit abnormal grain growth includes the steps of: a) providing a billet with an average grain size between ASTM 0 and ASTM 3; b) heating the billet to a temperature of between 1750.degree. F. and 1800.degree. F.; c) upsetting the billet to obtain a component part with a minimum strain of 0.125 in at least selected areas of the part; d) reheating the component part to a temperature between 1750.degree. F. and 1800.degree. F.; e) upsetting the component part to a final configuration such that said selected areas receive no strains between 0.01 and 0.125; f) solution treating the component part at a temperature of between 1725.degree. F. and 1750.degree. F.; and g) aging the component part over predetermined times at different temperatures. A modified process achieves abnormal grain growth in selected areas of a component where desirable.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
Works referenced in this record:
Development Requirements for an Advanced Gas Turbine System
journal, October 1995
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- Journal of Engineering for Gas Turbines and Power, Vol. 117, Issue 4
Advances in Steam Path Technology
journal, April 1996
- Cofer, J. I.
- Journal of Engineering for Gas Turbines and Power, Vol. 118, Issue 2