Quasicrystalline precipitation hardened metal alloy and method o

Details Quasicrystalline precipitation hardened metal alloy and method o Quasicrystalline precipitation hardened metal alloy and method o

1994-10-07

1997-05-27

Yee, Deborah

Metal treatment

Stock

Ferrous

148328, 148607, 148622, C22C 3822, C21D 602

Patent

active

056328265

ABSTRACT:
A precipitation hardened metallic alloy is provided in which the strengthening is based on the precipitation of particles. The strengthening particles have a quasicrystalline structure, said structure being essentially maintained at aging times up to 1000 h and tempering treatments up to 650.degree. C., the strengthening involving an increase in tensile strength of at least 200 MPa.

REFERENCES:
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patent: 5288342 (1994-02-01), Job
Kelton, K.F., "Quasicrystals: structure and stability", International Materials Review, 1993, vol. 38 No. 3, pp. 105-137.
Hovmoller, Sven, "CRISP: crystallographic image processing in a personal computer", Ultramicroscopy, 1992, vol. 41, pp. 121-135.
Schechtman, D., Blech, I., Gratias, D., and Cahn, J.W., "Metallic Phase with Long-Range Orientational Order and No Translational Symmetry", Physical Review Letters, 12 Nov. 1984, vol. 53, No. 20, pp. 1951-1953.
Liu, P., Dunlop, G.L. and Arnberg, L., "The Effect of Chromium Content on the Microstructure and Properties of Rapidly Solidified Al-Mn-Cr Alloys", International Journal of Rapid Solidification, 1990, vol. 5, pp. 229-249.
Hu, Z.W., Jiang, X.L., Zhu, J., and Hsu, S.S., "Formation of quasicrystalline phase and its orientation relationship with the parent phase in a duplex stainless steel", Philosophical Magazine Letters, 1990, vol. 61, No. 3, pp. 115-118.

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