Subsurface hardening and flow of aluminum during the incubation period of solid particle erosion
Conference
·
OSTI ID:6911477
- Notre Dame Univ., IN (USA). Dept. of Materials Science and Engineering
- Oak Ridge National Lab., TN (USA)
Samples of annealed 1100 Al were eroded by 600--700 {mu}m spherical steel shot impacting at an angle of 30{degree} to the surface at 45 m/s. The extent of erosion was controlled by varying the dose of solid particle erodent so as to cover the incubation period where the erosion rate is not yet constant. A characteristic ripple structure was observed on the surface with increasing particle dose. The increase of deformation of the subsurface layers was studied using taper-sectioning techniques in conjunction with a mechanical properties microprobe. Distinct differences were observed in the hardness profiles beneath crests and valleys which form the ripple structure. These results are used to discuss material deformation and flow as erosion proceeds. 31 refs., 13 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6911477
- Report Number(s):
- CONF-900107-4; ON: DE90010141
- Country of Publication:
- United States
- Language:
- English
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