Accession Number:

ADA001022

Title:

Thermoelastic Heat Effects in Equiatomic NiTi.

Descriptive Note:

Research memo.,

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE N Y RESEARCH DEPT

Personal Author(s):

Report Date:

1974-09-01

Pagination or Media Count:

19.0

Abstract:

This memorandum tests the thermodynamic assumptions inherent in the conclusion that the martensitic transformation in equiatomic NiTi is thermoelastic. The thermomechanical and thermodynamic results are found to support such a conclusion, and it is shown that the heat of transformation and temperature of transformation both increase with increased strain. Thermally cycling thermoelastic martensites through the transformation lowers both the transformation temperature and heat of transformation, and the lowest value should be considered the heat of transformation of the thermal martensite. Modified author abstract

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE