Metal treatment – Stock – Titanium – zirconium – or hafnium base
Patent
1992-04-23
1995-03-21
Roy, Upendra
Metal treatment
Stock
Titanium, zirconium, or hafnium base
148670, 148671, C22C 1400
Patent
active
053992121
ABSTRACT:
An alpha/beta titanium alloy having improved fatigue crack growth resistance can be prepared through a thermomechanical process using a three-step thermal treatment. The first step includes a heat up and hold at a temperature above the beta transition temperature, while the second step is a stabilization treatment which includes a heat up and hold below the beta transition temperature, in the alpha/beta range. The third thermal treatment is an aging treatment. The invention is particularly useful in preparing forged parts for aircraft.
REFERENCES:
patent: 4053330 (1977-10-01), Henricks et al.
patent: 4309226 (1982-01-01), Chen
patent: 5026520 (1991-06-01), Bhowal et al.
patent: 5173134 (1992-12-01), Chakrabarti et al.
patent: 8867208 (1975-02-01), Grekov et al.
Titanium and Titanium Alloys, edited by M. J. Donachie, Jr., Am. Soc. for Metals, Metals Park, Ohio 44073, 1982, pp. 12, 308, 152-155.
Titanium Alloy Data Sheet, A. K. Chakrabarti, compiled from various reports and papers.
S. R. Seagle et al., "Development of a Deep Hardenable Alloy for Intermediate Temperature Application," RMI Company, Niles, Ohio, TMS Proceedings . . . .
L. J. Bartlo et al., "Deep Hardenable Titanium Alloy," Technical Report AFML-TR-73-122, AFSC, Wright-Patterson Air Force Base, Ohio, 1973, May.
R. A. Wood, "Titanium and Titanium Alloys-A Review of Selected Developments," Battelle Columbus Labs, 505 King Avenue, Columbus, Ohio 43201, May 26, 1972.
"Mechanical Property Data-Ti-6-22-22S Alloy, Solution Treated and Aged Plate," F33615-72-C-1280, Battelle Columbus Labs, 505 King Avenue, Columbus, Ohio 43201, Apr. 1973.
"Mechanical Property Data-Ti-6-22-22S Alloy, Duplex Annealed Forged Billet," F33615-73-C-5073, Battelle Columbus Labs, 505 King Avenue, Columbus, Ohio 43201, Apr. 1973.
C. G. Rhodes and J. C. Williams, "The Precipitation of .alpha.-Phase in Metastable .beta.-Phase Titanium Alloys," Met. Trans. A, vol. 6A, Nov. 1975, pp. 2103-2114.
D. Sundaramam et al., "Phase Transformations in Ti-6-a/o Fe and Ti-6 a/o Fe-1.5 a/o N Alloys," Trans. Indian Inst. of Metals, vol. 40, No. 3, Jun. 1987, pp. 249-256.
Chakrabarti Amiya K.
Kuhlman George W.
Rohde Kristen A.
Aluminum Company of America
Mueller Douglas P.
Roy Upendra
Sullivan Jr. Daniel A.
Topolosky Gary P.
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