Metallic Composites Formed 'in situ' by Reactions in the Solid State.
Abstract
The major portion of this year's effort was study of the effects of alloying elements on the structure and properties of aligned Co-Si eutectoid. Of the nine alloying elements studied, only Ni could be added in appreciable quantities without disturbing the aligned eutectoid microstructure. Additions of Cr, Fe, Mn, or Cu produced cellular eutectoid microstructures. Additions of W, Ta, or Al produced eutectic, rather than eutectoid, microstructures. Most alloying additions caused a decrease in mechanical properties. Some improvement, however, was produced by alloying with W, and a Co-W-Si alloy showed a tensile strength at 900C of 78,800 psi. Other studies included electron microscope studies of quenched Co-Si microstructures, attempts to improve the room temperature ductility of Co-Si, and studies of eutectoid transformations in Ti-Cu, Mo-Fe, and Mo-Co alloys.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1975
- Accession Number
- ADA023007
Entities
People
- James D. Livingston
Organizations
- General Electric