Comparison of two way shape memory effect for a poly, bi and single crystal of a Cu-Zn-Al-Co alloy

Journal Article · Thu Jun 15 04:00:00 EDT 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00080-F· OSTI ID:92973

Guilemany, J M; Fernandez, J; Franch, R ^[1]

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1. Dept. Enginyeria Quimica i Metallurgia, Barcelona (Spain). Metallurgia Fisica-Ciencia de Materials

The Two Way Shape Memory Effect (TWSME) is associated with the growth of particular martensite variants. This preferential growth can be obtained by several training routes, all of them based on thermomechanical cycling. A new concept of training has been developed for Cu-based alloys in recent years. The training method involves the stabilization of the stress induced martensite (SSIM) by a thermal treatment which depends on the ally composition. The obtained SSIM allows control of the nucleation and growth of particular martensite variants during subsequent thermal cycles, thus providing TWSME. The aim of the present work is to study the optimum TWSME that can be obtained in a Cu-Zn-Al-Co allow in relation to the influence of grain boundaries. This has been achieved by training poly-, bi- and single crystals of the same alloy.

• OSTI ID: 92973
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 12 Vol. 32; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COBALT ADDITIONS
COPPER BASE ALLOYS
DISLOCATIONS
EXPERIMENTAL DATA
GRAIN BOUNDARIES
MARTENSITE
NUCLEATION
SHAPE MEMORY EFFECT
STRESSES
THERMOMECHANICAL TREATMENTS
ZINC ALLOYS