Thermodynamic analysis of the martensitic transformation in NiTi; 2: Effect of transformation cycling

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(94)90319-0· OSTI ID:7175688

McCormick, P G; Liu, Y ^[1]

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1. Univ. of Western Australia, Nedlands (Australia). Dept. of Mechanical and Materials Engineering

The effect of transformation cycling, with and without applied stress, on the martensitic transformation in NiTi has been studied. Changes in transformation temperatures resulting from cycling are interpreted in terms of changes to the elastic strain energy and the irreversible energy associated with the transformation. It is found that the main effect of thermal cycling under zero stress is to increase the elastic strain energy. With pseudoelastic cycling and extensive thermal cycling under stress the elastic strain energy decreases with increasing cycling due to the development of a direction internal stress field associated with the formation of aligned variants.

• OSTI ID: 7175688
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 42:7; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
DATA
EXPERIMENTAL DATA
INFORMATION
NICKEL ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SHAPE MEMORY EFFECT
THERMAL CYCLING
THERMODYNAMIC PROPERTIES
TITANIUM ALLOYS
TRANSITION TEMPERATURE