High strength NiTiHf shape memory alloys with tailorable properties

Saghaian, Sayed M.; Karaca, H.E.; Tobe, Hirobumi; Turabi, Ali Sadi; Saedi, Soheil; Saghaian, Sayed Ehsan; Chumlyakov, Yuriy; Noebe, Ronald D.

doi:10.1016/j.actamat.2017.05.065

Cited by 95 publications

(22 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, the stress‐loading capacity of Ni‐rich TiNiHf alloys is much larger than that of TiNi alloys. After aging at 450 or 550 °C for 3 h, Ti 28.8 Ni 51.2 Hf 20 alloy fully recovered under a load of nearly 2 GPa at both low and high temperatures . The combination of these superior functionalities may open up new application possibilities.…”

Section: Tinihf‐based High‐temperature Shape Memory Alloysmentioning

confidence: 99%

Recent Development of TiNi‐Based Shape Memory Alloys with High Cycle Stability and High Transformation Temperature

2020

View full text Add to dashboard Cite

show abstract

Section: Tinihf‐based High‐temperature Shape Memory Alloysmentioning

confidence: 99%

Recent Development of TiNi‐Based Shape Memory Alloys with High Cycle Stability and High Transformation Temperature

2020

View full text Add to dashboard Cite

show abstract

“…In terms of actuator technology, the supplied electrical energy can be used to generate mechanical deformation. In shape memory alloys (SMA), the applied electrical energy combined with the intrinsic resistance of SMA causes temperature to increase, which in turn leads to a conversion in the crystal structure from martensite to austenite, thus generating large usable forces and strains [ 14 , 15 , 16 , 17 ]. In contrast, shape memory polymers do not have intrinsically conductive components, but they too are able to use electrical energy via the intermediate stage of thermal energy to perform mechanical work [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Melt Spinning of Highly Stretchable, Electrically Conductive Filament Yarns

et al. 2021

View full text Add to dashboard Cite

Electrically conductive fibers are required for various applications in modern textile technology, e.g., the manufacturing of smart textiles and fiber composite systems with textile-based sensor and actuator systems. According to the state of the art, fine copper wires, carbon rovings, or metallized filament yarns, which offer very good electrical conductivity but low mechanical elongation capabilities, are primarily used for this purpose. However, for applications requiring highly flexible textile structures, as, for example, in the case of wearable smart textiles and fiber elastomer composites, the development of electrically conductive, elastic yarns is of great importance. Therefore, highly stretchable thermoplastic polyurethane (TPU) was compounded with electrically conductive carbon nanotubes (CNTs) and subsequently melt spun. The melt spinning technology had to be modified for the processing of highly viscous TPU–CNT compounds with fill levels of up to 6 wt.% CNT. The optimal configuration was achieved at a CNT content of 5 wt.%, providing an electrical resistance of 110 Ωcm and an elongation at break of 400%.

show abstract

“…SMAs have the ability to return to a pre-deformed shape when subjected to thermal or mechanical procedures or even magnetic stimuli. The SMAs have various properties such as: ductility [1], strength [2], good biocompatibility [3], specific functional properties like shape memory effect [4], pseudeoelasticity [5] and superelasticity (SE) [6]. Due to these properties, they have a myriad of applications in many fields: biomedical [7], construction [8,9], aerospace [10], automobile [11,12], robotics [13], and even extraterrestrial roving missions [14].…”

Section: Introductionmentioning

confidence: 99%

Influence of alloying elements on the thermal behavior of NiTi shape memory alloys

et al. 2021

View full text Add to dashboard Cite

NiTi based shape memory alloys are one of the most intensely studied alloys from its class. Therefore, diverse commercial applications have been developed due to certain properties such as: shape memory effect, superelasticity and corrosion resistance. Currently, the main applications of NiTi alloys are automotive manufacturing and aerospace actuators, biomedical devices or pipe couplings. In recent years, NiTi shape memory alloys have been alloyed with a third element in order to improve the above-mentioned properties. In order to investigate the influence of the alloying elements on the thermal behavior of NiTi alloys, the addition of the third alloying element (Ta and Nb) is under investigation in the present study. The thermal behavior of the three alloys (NiTi, NiTiNb and NiTiTa) was studied by differential scanning calorimetry. Following the experiments, it was observed that the addition of the third alloying element influences the critical transformation temperatures.

show abstract

High strength NiTiHf shape memory alloys with tailorable properties

Cited by 95 publications

References 43 publications

Recent Development of TiNi‐Based Shape Memory Alloys with High Cycle Stability and High Transformation Temperature

Recent Development of TiNi‐Based Shape Memory Alloys with High Cycle Stability and High Transformation Temperature

Melt Spinning of Highly Stretchable, Electrically Conductive Filament Yarns

Influence of alloying elements on the thermal behavior of NiTi shape memory alloys

Contact Info

Product

Resources

About