Two-way shape memory effect in a NiAl-Fe alloy

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00146-7· OSTI ID:271580

Xie, C Y; Sen, L W; Hsu, T Y ^[1]

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1. Shanghai Jiao Tong Univ. (China). Dept. of Materials Science

The dual phase ({beta} + {gamma}) NiAl-Fe shape memory alloys have recently been considered for their good ductility at room temperature. It was reported that the NiAl-Fe alloys quenched from high temperature show a shape recovery of 60%--80% or 90% after training, though they possess a dual phase microstructure, in which the {gamma}-phase can not contribute any SME. Factors affecting the one way SME, such as the quenching temperature, the amount of {gamma}-phase and the grain size of the {beta} phase matrix, have been studied in rather detail. However, two-way SME in the NiAl-Fe alloys has not been noticed yet. The present work is devoted to investigate the two-way SME in a dual phase NiAl-Fe alloy.

• OSTI ID: 271580
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 3 Vol. 35; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ANNEALING
BENDING
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
DILATOMETRY
HOT WORKING
INTERMETALLIC COMPOUNDS
IRON ALLOYS
MARTENSITE
MELTING
NICKEL ALLOYS
PHASE TRANSFORMATIONS
QUENCHING
SAMPLE PREPARATION
SHAPE MEMORY EFFECT
STRAINS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION