Alloys or metallic compositions – Containing over 50 per cent metal but no base metal – Iron containing
Reexamination Certificate
2006-09-07
2010-10-19
King, Roy (Department: 1793)
Alloys or metallic compositions
Containing over 50 per cent metal but no base metal
Iron containing
C148S442000
Reexamination Certificate
active
07815850
ABSTRACT:
Biphasic alloys, formed through a spinodal decomposition process, are disclosed. The alloys have improved strength and hardness, over single phase alloys, due to coherency strain between the phases. They are prepared from readily available transition metals, and they can be used to make large, high-strength parts, for example, of types that cannot be made by extrusion, forging or cold working techniques.
REFERENCES:
patent: 4642145 (1987-02-01), Masumoto et al.
patent: 2002/0124913 (2002-09-01), Uehara et al.
patent: 2001279360 (2001-10-01), None
Laughlin et al., Spinodal Structures, ASM Handbook,1992, ASM International, vol. 9, 9th Edition, p. 652-654.
Ramanarayan and Abinandan, Spinodal decomposition in fine grained materials, Bltn. Matter. Sci. vol. 26, No. 1, 189-192 (Jan. 2003).
Mainville et al., X-ray scattering Study of Early Stage Spinodal Decomposition in AI0.62Zn0.38, Phys. Review Lett. vol. 78, No. 14, 2787-2790 (1977).
Srinivas, M. et al. A first report on tracture toughness of BCC iron alloys as influenced by solutes; opposite effects of silicon and cobalt, Bull. Mater. Sci., vol. 11 No. 4, Dec. 1988, pp. 328-329.
Spinodal Decomposition, IUPAC Compendium of Chemical Terminology, 2nd Edition (1997) pp. 1.
Misra, A. and Gibala, R., Room-Temperature Deformation Behavior of Directionally Solidified Multiphase Ni-Fe-Al Alloys, Metallurgical and Materials Transactions A., vol. 28A, Mar. 1997, pp. 795-807.
Misra, A., et al., Optimization of toughness and strength in multiphase intermetallics, Elsevier Intermetallics 9 (2001) pp. 971-978.
Szymura, S. The Effect of Manganese on the Modification of Non-Metallic Inclusions and Magnetic Properties of Columnar Alnico 5 Permanent Magnets, Journal of Magnetism and Magnetic Materials 30 (1983) pp. 389-394.
Cahn, J.W., The 1967 Institute of Metals Lecture Spinodal Decomposition, Transactions of the Metallurgical Society of AIME vol. 242, Feb. 1968, pp. 166-180.
Singh, Jogender and Wayman, C.M.; “Age-Harding Characteristics Of A Martensitic Fe-Ni-Mn Alloy,” Materials Science And Engineering, 94, p. 233-242, 1987.
Hao, Shi Ming; Ishida, K.; and Nishizawa, T.; “Role of Alloying Elements In Phase Decomposition In Alnico Magnet Alloys,” Metallurgical Transactions A, Feb. 1985, vol. 16A, No. 2, p. 179-185, Feb. 1985.
Inoue, et al., “Microstructure and Mechanical Properties of Rapidly Quenched L20 and L20 + L12 Alloys in Ni-Al-Fe and Ni-Al-Co Systems,” Journal of Materials Science 19 (1984), pp. 3097-3106.
International Search Report and Written Opinion from related PCT Patent Application PCT/US05/07688, dated Nov. 4, 2006, 10 pages.
Baker Ian
Hanna James Anthony
Wittmann Markus Wolfgang
Fogarty Caitlin
King Roy
Lathrop & Gage LLP
The Trustees of Dartmouth College
LandOfFree
High-strength nanostructured alloys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-strength nanostructured alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-strength nanostructured alloys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4233443