Effect of uniaxial stress on coarsening of precipitate clusters
- Univ. of Virginia, Charlottesville, VA (United States). Dept. of Materials Science and Engineering
The influence of moderate applied uniaxial stresses ({sigma}{sub app}/C{sub 44} {approx} 10{sup {minus}3}) on the coarsening behavior of misfitting coherent precipitates in binary alloys has been studied. Three-dimensional (3-D) computer simulations of the coarsening have been performed for elastically homogeneous systems with tetragonal misfit strain and elastically heterogeneous systems with dilatational misfit strain. Precipitate shapes are restricted to spheres. Results depend on the sign of the misfit strain, the sign of the applied field, and the character of the elastic heterogeneity: precipitates softer than the matrix phase with positive (negative) misfit strain align along the direction of the applied stress for compressive (tensile) fields and arrange in planes perpendicular to it for tensile (compressive) fields. Precipitates harder than the matrix behave in the opposite way.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG05-93ER45507
- OSTI ID:
- 264069
- Report Number(s):
- CONF-941016--
- Journal Information:
- Metallurgical Transactions, A, Journal Name: Metallurgical Transactions, A Journal Issue: 6 Vol. 27; ISSN 0360-2133; ISSN MTTABN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Diffusional boundary conditions during coarsening of elastically interacting precipitates
Stress field of a system of two misfitting spherical precipitate particles