Theoretical analysis of the aging response of Al-Li alloys strengthened by Al/sub 3/Li precipitates
Conference
·
OSTI ID:5446720
The possibility of increasing the strength of aluminum-lithium alloys hardened principally by the delta' precipitates was investigated. The elastic theory of phase transformations was used to determine that the delta' precipitate is not expected to deviate from spherical morphology even at very large sizes. The theory of the critical resolved shear stress for dislocation glide through a random array of obstacles was used to predict a moderate strengthening increment if the precipitate size distribution could be made more uniform. Experimental and theoretical hardening curves for an experimentally determined precipitate size distribution were also compared.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5446720
- Report Number(s):
- LBL-19235; CONF-850777-1; ON: DE85016570
- Country of Publication:
- United States
- Language:
- English
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