Influence of cycling on the reversible martensitic transformation and shape memory phenomena in TiNi alloys

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90360-3· OSTI ID:5440614

Filip, P; Mazanec, K ^[1]

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1. Technical Univ. Ostrava, Poruba (Czechoslovakia). Inst. of Materials Engineering

TiNi alloys are important shape memory materials because of their excellent memory phenomena accompanied with superior mechanical and corrosion properties. Thermal and mechanical treatments can suppress slip deformation resulting in increase in flow stress and modify the transformation temperatures, recovery stresses and recovery strains. The key characteristic for numerous technical and medical applications is the degradation of fundamental memory parameters (change in transformation temperatures, loss of shape memory effect, loss of reversion stress) and unacceptable changes of element geometry as a consequence of cyclic thermal and/or mechanical loading. The present paper is devoted to the investigation of degradation mechanisms of the work hardened and annealed TiNi shape memory wires, during cyclic thermal changes under a constant load.

• OSTI ID: 5440614
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:1; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
INTERMETALLIC COMPOUNDS
NICKEL ALLOYS
PHASE TRANSFORMATIONS
TITANIUM ALLOYS