A Monte Carlo Simulation on the PFZ Microstructures in Al-Based Alloys during Multistep Annealing

Abstract:

Article Preview

A Monte Carlo simulation using semi grand canonical ensemble method was applied to examine the condition that precipitation free zone (PFZ) appears in an Al-based composite materials under two step aging. The present simulation uses a fcc lattice with a periodic boundary condition for y and z directions, and a grain boundary existing at the end for x direction. A simple grain boundary segregation case gave a nealy parabolic growth law in PFZ width and the volume fraction of precipitates. Different origin of PFZ, namely, mobility or chemical potential, lead to the opposite effect upon secondary heat treatment.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

937-940

Citation:

H. Okuda and S. Ochiai, "A Monte Carlo Simulation on the PFZ Microstructures in Al-Based Alloys during Multistep Annealing", Materials Science Forum, Vols. 475-479, pp. 937-940, 2005

Online since:

January 2005

Export:

Price:

$38.00

[1] J.L. Taylor: J. Inst. Metals 92(1963-1934), 301.

[2] J.D. Embury and R.B. Nicholson: Acta Metall., 13(1965), 403.

[3] P.N.T. Unwin G.W. Lorimer and R.B. Nicholson: Acta Metall. 1(1969)1363.

[4] A.K. Vasudevan and R.D. Doherthy : Acta Metall. 35(1987)1193.

[5] M.J. Starink et al. Acta Mater. 47(1999), 3868.

[6] T. Kobayashi and H. Toda: Proc. Fablication of Advanced Mater., TMS, Warremdale (1996), p.255.

[7] A. Pandley, B. Majumdar and D.B. Miracle: Metall. Mater. Trans. 31A(2000), 921.

[8] K. Ksawasaki : Phys. Rev. 145(1966) 224.

[9] H. Okuda,S. Ochiai, N. Yoshihara Mater. Sci. Forum 426-432(2003), 333.

[10] H. Okuda and S. Ochiai: Mater. Trans. 45(2004) in press.

[11] D. de Fontaine : Solid State Phys. 34(1979) 173.

Fetching data from Crossref.
This may take some time to load.