Shape memory alloys

Shape memory alloys

A group of metallic materials that can return to some previously defined shape or size when subjected to the appropriate thermal procedure. That is, shape memory alloys can be plastically deformed at some relatively low temperature and, upon exposure to some higher temperature, will return to their original shape. Materials that exhibit shape memory only upon heating are said to have a one-way shape memory, while those which also undergo a change in shape upon recooling have a two-way memory. Typical materials that exhibit the shape memory effect include a number of copper alloy systems and the alloys of gold-cadmium, nickel-aluminum, and iron-platinum. See Alloy, Heat treatment (metallurgy), Metal, mechanical properties of

References in periodicals archive ?
M2 PRESSWIRE-September 5, 2019-: Shape Memory Alloys Market 2019: With Top Key Player and Countries Data: Trends and Forecast 2023, Industry Analysis by Regions, Type and Applications
Shape memory alloys (SMA) are materials known as intelligent metals from the past to present day.
The materials design papers apply the systems design approach to high-performance stainless steels, transformation toughened blast-resistant naval hull steels, and Heusler precipitation strengthened shape memory alloys. ([umlaut] Ringgold, Inc., Portland, OR)
Summary: This is a brief review of the Fascinating Shape Memory Alloys, commonly known as smart metal, memory metal, memory alloy, muscle wire, smart alloy.
The superelastic shape memory alloys (SMAs) maintain their austenite properties even at room temperature and can be restored to their original shape only after the removal of stress, even if no heat treatment is applied [15-17].
Savi, "An overview of constitutive models for shape memory alloys," Mathematical Problems in Engineering, vol.
Its property is unique only in shape memory alloys, NiTinol wire returns to original shape due to transformation from martensite phase low temperature to austenite phase high temperature.
The applications of Shape Memory Alloys (SMA) in the manufacturing of implantable medical devices is extensively followed in orthopedics, neurology, cardiovascular and dentistry.
Shape memory alloys (SMAs) are metallic alloys with distinguished characteristics like thermoelastic phase transformations, unique shape memory effect and pseudoelastic hysteretic behaviors, excellent corrosion resistance, biocompatibility along with high strength, strain, and power density.
Cu-based shape memory alloys are being considered as a prospective material for applications including highdamping capacity material, sensors, and actuators.