Influence of grain growth on the martensitic transformation in. beta. -Cu-Zn-Al memory alloys

Journal Article · Sat Apr 01 00:00:00 EST 1989 · Materials Research Bulletin; (USA)

DOI:https://doi.org/10.1016/0025-5408(89)90026-3· OSTI ID:5267191

Muntasell, J; Tamarit, J L ^[1]; Cesari, E ^[2]; Guilemany, J M ^[3]

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1. Dept. de Fisica i Enginyeria Nuclear Universitat Politecnica de Catalunya, 08028 Barcelona (ES)
2. Universitat de les Illes Balears, 07071 Palma de Mallorca (ES)
3. Departament d'Enginyeria Quimica i Metal.lurgia, Universitat de Barcelona, 08028 Barcelona (ES)

The effect of grain size on martensitic transformation in Cu-Zn-Al shape memory alloys subjected to two thermal treatments in order to retain {beta} phase has been studied by means of calorimetry and acoustic emission. The dependence of transformation temperatures and thermal hysteresis on grain size is interpreted from a thermodynamic model in terms of elastic enthalpy and frictional work contributions; these are non-chemical terms present in thermoelastic martensitic transformation.

• OSTI ID: 5267191
• Journal Information: Materials Research Bulletin; (USA), Vol. 24:4; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM ALLOYS
PHASE TRANSFORMATIONS
COPPER ALLOYS
MARTENSITE
GRAIN ORIENTATION
ZINC ALLOYS
ACOUSTIC MONITORING
CALORIMETRY
ENTHALPY
HEAT TREATMENTS
HYSTERESIS
THERMODYNAMIC MODEL
ALLOYS
CARBON ADDITIONS
CRYSTAL STRUCTURE
IRON ALLOYS
MATHEMATICAL MODELS
MICROSTRUCTURE
MONITORING
ORIENTATION
PARTICLE MODELS
PHYSICAL PROPERTIES
STATISTICAL MODELS
THERMODYNAMIC PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties
400102 - Chemical & Spectral Procedures