Abstract
Au-7 at.% Pt Deformation-processed Metal Metal Composite (DMMC) was isothermally annealed at various times and temperatures. Avrami and Arrhenius relations were used to evaluate the kinetics of the transformation from the initial metastable nanofilamentary microstructure to the equilibrium homogeneous solid solution condition. Results indicated that the activation energy for this transformation was 167 ± 6 kJ/mol. This activation energy is lower than activation energies reported in the literature for planar interface, single crystal Au-Pt diffusion couple experiments. The effects of chemical potential, surface curvature, and strain effects on the empirical activation energies determined in the DMMC of this study are discussed. These factors are thought to cause the DMMC systems to reach equilibrium faster.
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References
J. D. Verhoeven, F. A. Schmidt, E. D. Gibson and W. A. Spitzig,J.Metals 38 (9) (1986) 20
Y. Sakai and H. J. Schneider-Mutau,Acta Mater. 45 (1997) 1017
V. Gantovnik, A. M. Russell, L. S. Chumbley, K. Wongpreedee and D. Field,Gold Bull 33(4) (2000) 128
A. M. Russell, L. S. Chumbley and Y. Tian,Adv. Engr. Mater. 2 (2000) 11
W. A. Spitzig, P. D. Krotz, L. S. Chumbley, H. L. Downing and J. D. Verhoeven,Mater. Res. Soc. Symp. Proc. 120 (1988) 45
K.L. Lee, A. F. Whitehouse, A. M. Russell, K. Wongpreedee, S. I. Hong, and P. J. Withers,J. Mater. Sci, 38(16) (2003) 3437
J. C. Malzahn Kampe, T. H. Courtney, Y. Leng,Acta metal. 37(7) (1989) 1735
K. Xu, K. Wongpreedee, and A. M. Russell,J. Mater. Sci. 37 (2002) 5209
L. Rayleigh,Proc. Lond. Math. Soc. 10(1879) 4
W. W. Mullins,Trans. Am. Inst. Min. Metall. Pet. Eng. Inc 218(1960) 354
V. B. Gantovnik, M. S.Thesis, Iowa State University, 1999
S. Hirosawa, T. Sata, J. Yokata and A. Kamio,Mater Trans JIM 19(1) (1998)139
T. Sato, T. Murakami, Y. Amemiva, H. Hashizume and I. Takahashi,Acta Metall 36(5) (1988) 1335
G. Rein, H. Mehrer, and K. Maier,Phys. Status Solidii, A45(1978) 253
A. J. Mortlock, A. H. Rower, and A. D. Le Claire,Phil. Mag., 5(1960) 803
R. K.Trivedi, Lectures on the Theory of Phase Transformations, 2nd edition, H.I. Aaronson, Editor, AIME (2000)
E. M. Wise and R. F. Vines, The Platinum Metals and Their Alloys, The International Nickel Company, Inc, NY. (1941)
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Dr. Wongpreedee is a faculty member at Srinakharinwirot University, Thailand. Her teaching focuses on the physical metallurgy of jewelry alloys. Her research currently involves structure and mechanical property-processing relations of precious metal and alloys.
Dr. Russell is Professor of Materials Science and Engineering at Iowa State University, USA. His research deals with mechanical properties of intermetallic compounds and deformation processed metal-metal composites.
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Wongpreedee, K., Russell, A. The stability of Pt nanofilaments in a Au-matrix composite. Gold Bull 40, 199–205 (2007). https://doi.org/10.1007/BF03215581
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DOI: https://doi.org/10.1007/BF03215581