Effect of high-temperature treatment on the structure and properties of TiNi-base alloys

Гусев, Д. Е.; Senkevich, K. S.; Knyazev, M. I.

doi:10.1007/s11041-012-9479-2

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…This reduction of Ti2Ni precipitation is caused by the reverse peritectic reaction and/or the instant high solution treatment. A similar result was also reported by Gusev et al [45], where the volume fraction of Ti2Ni precipitation presented a reduction trend when the NiTi alloys underwent a high temperature treatment in the range of 700°C-1100°C. Due to the reduction of the Ti2Ni fraction in the structure, the phase transformation resistance will be decreased.…”

Section: (A) the Atomic Ratio Ofsupporting

confidence: 89%

“…Meanwhile, the maximum temperature during reheating process reaches about ~1207°C, above the peritectic reaction temperature of Ti2Ni precipitation. Based on previous research [45,46], the high temperature treatment of NiTi alloy up to 1100°C can effectively decrease the grain size and volume fraction of the Ti2Ni phase. Moreover, high solution treatment has been proven to improve microstructure homogenization [47] and eliminate dislocations [48].…”

Section: Characterizationmentioning

confidence: 97%

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Microstructure and phase transformation of nickel-titanium shape memory alloy fabricated by directed energy deposition with in-situ heat treatment

Gao

Bodunde

Qin

et al. 2022

Journal of Alloys and Compounds

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Section: (A) the Atomic Ratio Ofsupporting

confidence: 89%

Section: Characterizationmentioning

confidence: 97%

Microstructure and phase transformation of nickel-titanium shape memory alloy fabricated by directed energy deposition with in-situ heat treatment

Gao

Bodunde

Qin

et al. 2022

Journal of Alloys and Compounds

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“…3 b. This low-temperature effect also cannot result in a change in the volume fraction of the Ti 2 Ni particles and a respective change of titanium-tonickel percentage ratio in the matrix of the alloy, since these particles are thermally stable up to high temperatures [28].…”

Section: Figmentioning

confidence: 99%

Production of niobium vacuum-arc coating on a TiNi-based alloy

Senkevich

Гусев

Sitnikov³

et al. 2019

Lett. Mater.

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The aim of this work is to produce a niobium coating by vacuum-arc deposition on a TiNi-based alloy. This method has not been studied in relation to titanium nickelide base alloys and is promising for the production of corrosion and wear resistant coatings for medical and technical applications. The niobium coating is deposited on the semi-finished products (wire and cylindrical specimens) made of titanium nickelide base alloy of composition Ti 49.4 Ni 50.6 (at pct) and the surface subjected to mechanical grinding. It is stated that the obtained coating with a thickness of about 1 μm possesses drawbacks, such as 'inherited' surface profile formed by mechanical grinding of semi-finished products, and the drop phase, which is a typical unavoidable defect for this type of deposition method. At the same time, the surface layer of the alloy with a niobium coating exhibits a significantly higher microhardness (two times more) than the initial alloy. The effect of the revealed defects on the corrosion properties and wear resistance of the alloy requires further study. Bending deformation is used to study the mechanical behavior of the wire in the initial state and after coating deposition; it is stated that the coated wire exhibits superelastic behavior in bending identical to the initial wire. At the same time, deposition of the coating causes the formation of internal stress fields near the wire surface, and the effects of these fields lead to the elimination of non-recoverable deformation in the unloaded wire accumulated in the subsurface layers under loading.

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Effect of the Volume Fraction of Ti2Ni and Aging on the Structure and Properties of Alloys Based on Titanium Nickelide

2018

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Effect of high-temperature treatment on the structure and properties of TiNi-base alloys

Cited by 8 publications

References 3 publications

Microstructure and phase transformation of nickel-titanium shape memory alloy fabricated by directed energy deposition with in-situ heat treatment

Microstructure and phase transformation of nickel-titanium shape memory alloy fabricated by directed energy deposition with in-situ heat treatment

Production of niobium vacuum-arc coating on a TiNi-based alloy

Effect of the Volume Fraction of Ti2Ni and Aging on the Structure and Properties of Alloys Based on Titanium Nickelide

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