Published August 2018 | Version v1
Journal article Metadata-only

Thermal, magnetic field- and stress-induced transformation in Heusler-type Co-Cr-Al-Si shape memory alloys

Creators

  • 1. Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-02, Sendai 980-8579 (Japan)
  • 2. The Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581 (Japan)

Description

The phase diagram, including the martensitic and magnetic transformations, was determined by thermoanalysis and thermomagnetization measurements in the CoxCr79-xAl10.5Si10.5 section of the Co-based Heusler shape memory alloy. Magnetization measurements under pulsed magnetic fields were conducted and magnetic field-induced reverse martensitic transformation was clearly observed at room temperature. A superelastic behavior was obtained in the Co55.7Cr23.3Al10.5Si10.5 alloy in the temperature range of 198 to 423 K. The critical stress for martensitic transformation was found to show a negative temperature dependence at temperatures lower than approximately 310 K due to the magnetic effect despite the normal temperature dependence at higher temperatures.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2018.04.033

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2018.04.033;
PII
S1359646218302604;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
153
Journal Page Range
p. 35-39
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50057525
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM; CHROMIUM; COBALT; HEUSLER ALLOYS; MAGNETIC FIELDS; MAGNETIZATION; MARTENSITIC STEELS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; SHAPE MEMORY EFFECT; SILICON; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TRANSFORMATIONS
Descriptors DEC
ALLOYS; ALUMINIUM ALLOYS; CARBON ADDITIONS; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; DIAGRAMS; ELEMENTS; INFORMATION; IRON ALLOYS; IRON BASE ALLOYS; MANGANESE ALLOYS; METALS; SEMIMETALS; STEELS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.