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ASM Handbook

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials

By
ASM Handbook Committee
ASM Handbook Committee
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ASM International
Volume
2
ISBN electronic:
978-1-62708-162-7
Publication date:
1990
Book Chapter

Shape Memory Alloys

By
Darel E. Hodgson
Darel E. Hodgson
Shape Memory Applications, Inc.
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Ming H. Wu
Ming H. Wu
Memry Corporation
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Robert J. Biermann
Robert J. Biermann
Harrison Alloys, Inc.
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Published:
1990
Page range:
897 - 902

Abstract

The term shape memory alloys (SMAs) is applied to that group of metallic materials that demonstrate the ability to return to some previously defined shape or size when subjected to the appropriate thermal procedure. SMAs are extremely corrosion resistant with excellent biocompatibility which can be fabricated into very small size with properties of elasticity and force delivery that allow uses in several industrial applications, including biomedical applications. This Article provides information on the history of SMAs, the general characteristics of SMAs, and their crystallography, including the phase transformations and phases occurring during thermal treatment. It also describes the thermomechanical behavior of SMAs, and explains the different characterization methods, including the differential scanning calorimeter (DSC) technique. The Article describes the types of SMA alloys, namely, nickel-titanium alloys and copper-base shape memory alloys with their properties.

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Darel E. Hodgson, Ming H. Wu, Robert J. Biermann, 1990. "Shape Memory Alloys", Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook Committee

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