Lightweight NiTi shape memory alloy based composites with high damping capacity and high strength

Li, D.S.; Zhang, X.P.; Xiong, Zhi-Hua; Mai, Yiu‐Wing

doi:10.1016/j.jallcom.2009.10.025

Cited by 69 publications

(41 citation statements)

References 23 publications

(27 reference statements)

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“…Thus, this high damping capacity of the composite at low temperatures can be ascribed to the contribution of the Ti 3 Sn component. The highest tan d of the composite reached is 0.075, which exceeds those of martensitic NiTi SMAs [11,12] and commercial Mn-Cu-based high damping alloys [9,10]. Fig.…”

Section: Methodsmentioning

confidence: 85%

“…Besides the transformationrelated internal friction peak, the composite also exhibits a rapidly increased high mechanical damping over a wide temperature range at below 0°C. It is known that the damping capacity of NiTi in martensitic state is practically independent of temperature [11,12]. However, the damping capacity of Ti 3 Sn is dependent on the change of temperature [8].…”

Section: Methodsmentioning

confidence: 99%

“…The maximum damping capacity of Ti 3 Sn has been reported to reach 0.2 (indexed by tan d) [8], which is over four times higher than those of typical commercial Mn-Cu-based high-damping alloys (with tan d of about 0.05) [9,10] and NiTi shape memory alloys (tan d approximate 0.04) [11,12]. However, due to the lack of adequate slip systems in its D0 19 crystal structure, the Ti 3 Sn intermetallic compound is extremely brittle [13,14].…”

Section: Introductionmentioning

confidence: 98%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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a b s t r a c tThe concept of transformation-induced plasticity effect is introduced in this work to improve the plasticity of brittle intermetallic compound Ti 3 Sn, which is a potent high damping material. This concept is achieved in an in situ NiTi/Ti 3 Sn composite. The composite is composed of primary Ti 3 Sn phase and (NiTi + Ti 3 Sn) eutectic structure formed via hypereutectic solidification. The composite exhibits a high damping capacity of 0.075 (indexed by tan d), a high ultimate compressive strength of 1350 MPa, and a large plasticity of 27.5%. In situ synchrotron high-energy X-ray diffraction measurements revealed clear evidence of the stress-induced martensitic transformation (B2 ? B19 0 ) of the NiTi component during deformation. The strength of the composite mainly stems from the Ti 3 Sn, whereas the NiTi component is responsible for the excellent plasticity of the composite.

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Section: Methodsmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

et al. 2014

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“…Nickel-titanium alloy near the equiatomic concentration is well known for its shape memory effect (SME) [1], and also its unique physical and mechanical properties, such as good ductility at room temperature, good vibration damping properties and corrosion properties in sea water [2].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of NiTi shape memory alloy by Micro-FAST

Huang

Qin

Zhao

et al. 2015

MATEC Web of Conferences

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Abstract.A NiTi shape memory alloy, known as nitinol, has been intensively studied for last five decades. The NiTi alloy with large size is commonly produced by vacuum sintering, thermal explosion mode of self-propagating high-temperature synthesis (TE-SHS) and spark plasma sintering (SPS). These methods are, however, rarely utilized for the forming of miniature and micro-sized components and have their own limits and disadvantages, such as long process chains and low efficiency with the processes. In the study reported in this paper, an innovation in rapid powder consolidation technology, called Micro-FAST (combining micro-forming and electric-current activated sintering techniques (FAST)) is introduced for the forming of micro-components in which the loose powders are loaded directly into the die, followed by electric-sintering. In the study, 4.0 mm × 4.0 mm miniature cylinders were formed with pre-alloyed NiTi powders. Sintered sample with relative density of 98.65% has been fabricated at a sintering temperature of 1150°C in a relatively short cycle time (119.5 s). Based on the results of SEM and XRD, it was found that the densified samples with Ni 3 Ti, NiTi and NiTi 2 phases were produced.

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“…The twin boundaries in martensite can be easily moved by an external stress to accommodate the strain, which is believed to be responsible for the high damping of NiTi based alloys [9,10]. On the other hand, lead zirconate titanate (PZT) family of perovskite oxides is most intensively studied ferroelectric materials due to their large remnant polarization, large electro-mechanical coupling coefficient, and relatively high Currie temperature [11,12].…”

Section: Introductionmentioning

confidence: 99%

Influence of buffer layer on structural, electrical and mechanical properties of PZT/NiTi thin film heterostructures

Choudhary

Kaur

2012

Journal of Alloys and Compounds

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Lightweight NiTi shape memory alloy based composites with high damping capacity and high strength

Cited by 69 publications

References 23 publications

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

High damping NiTi/Ti3Sn in situ composite with transformation-mediated plasticity

Fabrication of NiTi shape memory alloy by Micro-FAST

Influence of buffer layer on structural, electrical and mechanical properties of PZT/NiTi thin film heterostructures

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