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

Journal Article · Sat Apr 01 04:00:00 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), Journal Name: Materials Research Bulletin; (USA) Vol. 24:4; ISSN MRBUA; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

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