Strain-induced diffusion and precipitation in aluminum-lithium alloy during creep
✍ Scribed by R.P. Marshall
- Publisher
- Elsevier Science
- Year
- 1961
- Weight
- 861 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0001-6160
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✦ Synopsis
creep in a binary, two-phase aluminum-12 at.% lithium alloy. The solute, lithium, diffused to and This note reports the observation of what appears precipitated as LiAl in grain boundaries oriented to be strain-induced diffusion and precipitation during 45-90" to the direction of stress. Gage Length L FIG. 1. Microstructure of Al-12 at. y0 Li alloy showing strain-induced diffusion. Creep specimen 22 per cent elongation in gage section under stress of 6000 lb/' m2 at 249°C. (Not to scale) (a) Structure in gage length. Arrows indicate layers formed by strain-induced diffusion and precipitation. Specimen as-polished. X 225. (b) Area with same thermal history as (a) but deformation was zero. Specimen as-polished. X 225 * The information contained in this article was developed during the course of work under contract AT(07-2)-l with the U.S. Atomic Energy Commission.