Accession Number:

AD0256166

Title:

YIELD POINTS IN ALPHA-CU-AL SINGLE CRYSTALS

Descriptive Note:

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL TECHNOLOGICAL INST

Personal Author(s):

Report Date:

1961-04-12

Pagination or Media Count:

1.0

Abstract:

A yield point effect attributed to short-range ordering SRO occurs in Cu base Al. The yield drop at 296 K varies with heat treatment, decreasing as the annealing temperature is raised from 433 to 598 K. Yield drop 523 K anneal, measured at 77 K is approximately proportional to c sub Al 1-c sub Al squared, where c is the atomic concentration of the solute. The variation of yield drop with strain rate and testing temperature is also consistent with the idea that it is associated with SRO. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE