Topic
Shape-memory alloy
About: Shape-memory alloy is a research topic. Over the lifetime, 11807 publications have been published within this topic receiving 186531 citations. The topic is also known as: SMA & smart alloy.
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Book•
01 Jan 1998
TL;DR: Otsuka et al. as mentioned in this paper introduced shape memory alloy actuators and their application in medical and dental applications, including shape memory ceramics, shape memory polymers, and shape memory alloys.
Abstract: 1. Introduction K. Otsuka and C. M. Wayman 2. Mechanism of shape memory effect and superelasticity K. Otsuka and C. M. Wayman 3. Ti-Ni shape memory alloys T. Saburi 4. Cu-based shape memory alloys T. Tadaki 5. Ferrous shape memory alloys T. Maki 6. Fabrication of shape memory alloys Y. Suzuki 7.Characteristics of shape memory alloys J. Van Humbeeck, R. Stalmans 8. Shape memory ceramics K. Uchino 9. Shape memory polymers M. Irie 10. General applications of SMA's and smart materials K. N. Melton 11. The design of shape memory alloy actuators and their applications I. Ohkata and Y. Suzuki 12. Medical and dental applications of shape memory alloys S. Miyazaki.
2,969 citations
Patent•
21 May 1986TL;DR: In this paper, the use of stress-induced martensite decreases the temperature sensitivity of the devices, thereby making them easier to install and/or remove, and thus reducing the cost.
Abstract: Medical devices which are currently proposed to use elements made from shape memory alloys may be improved by the use of stress-induced martensite alloy elements instead. The use of stress-induced martensite decreases the temperature sensitivity of the devices, thereby making them easier to install and/or remove.
1,772 citations
TL;DR: The magnetic-field-induced shape recovery of a compressively deformed NiCoMnIn alloy is reported, attributing this deformation behaviour to a reverse transformation from the antiferromagnetic (or paramagnetic) martensitic to the ferromagnetic parent phase in the Ni45Co5Mn36.7In13.3 single crystal.
Abstract: Large magnetic-field-induced strains1 have been observed in Heusler alloys with a body-centred cubic ordered structure and have been explained by the rearrangement of martensite structural variants due to an external magnetic field1,2,3. These materials have attracted considerable attention as potential magnetic actuator materials. Here we report the magnetic-field-induced shape recovery of a compressively deformed NiCoMnIn alloy. Stresses of over 100 MPa are generated in the material on the application of a magnetic field of 70 kOe; such stress levels are approximately 50 times larger than that generated in a previous ferromagnetic shape-memory alloy4. We observed 3 per cent deformation and almost full recovery of the original shape of the alloy. We attribute this deformation behaviour to a reverse transformation from the antiferromagnetic (or paramagnetic) martensitic to the ferromagnetic parent phase at 298 K in the Ni45Co5Mn36.7In13.3 single crystal.
1,581 citations
Book•
01 Nov 1990
TL;DR: An introduction to martensite and shape memory, CMWayman and TWDuerig shape memory and transformation behavior of mariensitic Ti-Pd-Ni andTi-Pt-Ni alloys, PGLindquit and CMMayman the mechanical aspects of constrained recovery, JLProft and TWduerig the design of electrical interconnection systems with shape memory alloys as mentioned in this paper, ECydzik actuator and work production devices.
Abstract: An introduction to martensite and shape memory, CMWayman and TWDuerig shape memory and transformation behavior of mariensitic Ti-Pd-Ni and Ti-Pt-Ni alloys, PGLindquit and CMWayman the mechanical aspects of constrained recovery, JLProft and TWDuerig the design of electrical interconnection systems with shape memory alloys, ECydzik actuator and work production devices, AKeeley, DStockel and TWDuerig fatique of copper-based shape memory alloys, EHornbogen shape memory actuators for automotive applications, DStockel using shape memory for proportional control, DEHodgson an engineer's perspective of pseudoelasticity, TWDuerig and GRZadno the use of superelasticity in guidewires and arthroscopic instrumentation, JStice some notes on the mechanical damping of shape memory alloys, MWuttig
1,560 citations
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TL;DR: Otsuka et al. as mentioned in this paper showed a one-to-one correspondence between shape memory effect and the thermoelastic martensitic transformation in a Cu-AI-Ni alloy.
Abstract: In some alloys, a given plastic strain recovers completely when the con cerned alloy is heated above a certain temperature. This phenomenon, shape memory effect (SME), was observed in Au-Cd (1) and In-Tl (2) alloys in the first half of 1950s. However, SME was not a focus of research until it was found in a Ti-Ni alloy (3) in 1963, when the phenomenon was first termed the shape memory effect. A similar phenomenon was found in a Cu-AI-Ni alloy as well (3a). At that time, however, SME was considered to be a peculiar phenomenon limited to the specific Ti-Ni alloy. In 1970, Otsuka & Shimizu (4, 4a) unambiguously demonstrated a one to-one correspondence between SME and the thermoelastic martensitic transformation in a Cu-AI-Ni alloy. Thus, they concluded that SME is characteristic of alloys exhibiting thermoelastic martensitic trans formations. They ascribed the origin to the crystallographic reversibility of the thermoelastic transformation and the presence of a recoverable deformation mode, i.e. twinning, in thermoelastic alloys. Since then, there
1,497 citations