DUCTILITY LIMITATIONS OF ALUMINUM-SILICON ALLOYS.

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Abstract:

The relation between microstructure and mechanical properties of cast 356 type aluminum alloys was studied to determine the cause of the variations in properties resulting from differences in solidification rate. It was found that variations in strength are a consequence of variations in ductility and that ductility is inversely proportional to the dendrite cell size. A mechanism is proposed to account for this correlation based on the fracture strain of the interdendritic silicon particles, and the differential strain across dendrite cell boundaries. Author

Author(s):
Frederick, S. ; Bailey, W. A.
Author Organization(s):
DOUGLAS AIRCRAFT CO INC SANTA MONICA CALIF MISSILE AND SPACE SYSTEMS DIV
Pagination:
0036

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DAC-59518
Contract/Grant Number(s):
NASA-7-101
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*ALUMINUM ALLOYS, *DUCTILITY), (*SILICON ALLOYS, DUCTILITY), (*METALLOGRAPHY, ALUMINUM ALLOYS), MICROSTRUCTURE, MECHANICAL PROPERTIES, CRYSTALLOGRAPHY
Field(s)/Group(s):
Properties of Metals and Alloys
Report Date:
1966 Aug 19