Mechanical alloying of MoSi2 with ternary alloying elements. Part 2 - computer simulation

Heron, A. J. and Schaffer, G. B. (2003) Mechanical alloying of MoSi2 with ternary alloying elements. Part 2 - computer simulation. Materials Science And Engineering A-structural Materials Properties Microstructure And Processing, 359 1-2: 319-325. doi:10.1016/S0921-5093(03)00375-7


Author Heron, A. J.
Schaffer, G. B.
Title Mechanical alloying of MoSi2 with ternary alloying elements. Part 2 - computer simulation
Journal name Materials Science And Engineering A-structural Materials Properties Microstructure And Processing   Check publisher's open access policy
ISSN 0921-5093
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0921-5093(03)00375-7
Volume 359
Issue 1-2
Start page 319
End page 325
Total pages 7
Place of publication Lausanne, Switzerland
Publisher Elsevier Science SA
Collection year 2003
Language eng
Subject C1
291403 Alloy Materials
671099 Fabricated metal products not elsewhere classified
Abstract A computer model of the mechanical alloying process has been developed to simulate phase formation during the mechanical alloying of Mo and Si elemental powders with a ternary addition of Al, Mg, Ti or Zr. Using the Arhennius equation, the model balances the formation rates of the competing reactions that are observed during milling. These reactions include the formation of tetragonal C11(b) MOSi2 (t-MoSi2) by combustion, the formation of the hexagonal C40 MoSi2 polymorph (h-MoSi2), the transformation of the tetragonal to the hexagonal form, and the recovery of t-MoSi2 from h-MoSi2 and deformed t-MoSi2. The addition of the ternary additions changes the free energy of formation of the associated MoSi2 alloys, i.e. Mo(Si, Al)(2), Mo(Mg, Al)(2), (Mo, Ti)Si-2 (Mo, Zr)Si-2 and (Mo, Fe)Si-2, respectively. Variation of the energy of formation alone is sufficient for the simulation to accurately model the observed phase formation. (C) 2003 Elsevier B.V. All rights reserved.
Keyword Materials Science, Multidisciplinary
Mosi2
Mechanical Alloying
Computer Simulation
Milling Dynamics
Kinetics
Programs
Nanoscience & Nanotechnology
Q-Index Code C1

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Wed, 15 Aug 2007, 02:39:04 EST