Mechanical behavior of Ti-Ta-based surface alloy fabricated on TiNi SMA by pulsed electron-beam melting of film/substrate system

Meisner, S. N.; Yakovlev, E. V.; Semin, V.O.; Meisner, L. L.; Ротштейн, В. П.; Нейман, А. А.; D'yachenko, F.A.

doi:10.1016/j.apsusc.2017.12.107

Cited by 58 publications

(34 citation statements)

References 35 publications

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“…The authors of [21] have successfully demonstrated the possibilities of the formation of Ti-Ta surface alloys on TiNi substrates by pulsed electron-beam melting of the TiTa films/TiNi substrate system. Their results showed that the elastoplastic properties were greatly improved.…”

Section: Introductionmentioning

confidence: 99%

Influence of Beam Power on Young’s Modulus and Friction Coefficient of Ti–Ta Alloys Formed by Electron-Beam Surface Alloying

Valkov

Дечев

Ivanov

et al. 2021

Metals

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In this study, we present the results of Young’s modulus and coefficient of friction (COF) of Ti–Ta surface alloys formed by electron-beam surface alloying by a scanning electron beam. Ta films were deposited on the top of Ti substrates, and the specimens were then electron-beam surface alloyed, where the beam power was varied from 750 to 1750 W. The structure of the samples was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). Young’s modulus was studied by a nanoindentation test. The coefficient of friction was studied by a micromechanical wear experiment. It was found that at 750 W, the Ta film remained undissolved on the top of the Ti, and no alloyed zone was observed. By an increase in the beam power to 1250 and 1750 W, a distinguished alloyed zone is formed, where it is much thicker in the case of 1750 W. The structure of the obtained surface alloys is in the form of double-phase α’and β. In both surface alloys formed by a beam power of 1250 and 1750 W, respectively, Young’s modulus decreases about two times due to different reasons: in the case of alloying by 1250 W, the observed drop is attributed to the larger amount of the β phase, while at 1750 W is it due to the weaker binding forces between the atoms. The results obtained for the COF show that the formation of the Ti–Ta surface alloy on the top of Ti substrate leads to a decrease in the coefficient of friction, where the effect is more pronounced in the case of the formation of Ti–Ta surface alloys by a beam power of 1250 W.

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Section: Introductionmentioning

confidence: 99%

Influence of Beam Power on Young’s Modulus and Friction Coefficient of Ti–Ta Alloys Formed by Electron-Beam Surface Alloying

Valkov

Дечев

Ivanov

et al. 2021

Metals

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“…Этот способ позволяет получать тонкие и однородные покрытия. Для осаждения могут быть использованы различные элементы, в том числе, кремний [2] и тантал [3]. При этом между покрытием и подложкой образуется переходный слой, в котором покрытие постепенно переходит в основной материал.…”

Section: институт физики прочности и материаловедения со ран томскunclassified

EVOLYuTsIYa FAZOVOGO SOSTAVA I STRUKTURY POVERKhNOSTNYKh SLOEV V SISTEMAKh TiNi+Si I TiNi+Ta V USLOVIYaKh VOZDEYSTVIYa POTOKA ELEKTRONOV S UChETOM OSOBENNOSTEY NDS

2020

Mezhdunarodnaya Konferentsiya "Fizicheskaya Mezomekhanika. Materialy S Mnogourovnevoy Ierarkhicheski Organizovannoy Strukturoy

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“…Titanium alloys are widely employed as biomaterials because they offer great functionality, biocompatibility, great corrosion resistance, and mechanical properties [1][2][3][4]. Among them, NiTi shape memory alloys (SMAs) have been extensively assessed in terms of superelasticity (SE) [5][6][7], usage for orthodontic arch wire, self-expanding stent, and embracing fixator, etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Behavior of Ti-Nb Coatings on NiTi Substrate Fabricated by Laser Cladding

Hu¹,

Ren²,

Huang³

et al. 2021

Coatings

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Ti-23Nb (at.%) coatings on an NiTi alloy with metallurgical bonding were prepared by laser cladding (LC) technology using Ti-Nb mixture powders. The effects of laser processing parameters on the microstructure and mechanical properties of the coatings were systematically investigated and the corrosion resistance of the coatings was assessed. The coatings were composed of TiNb, (Ti, Nb)2Ni, and β-Nb phases. The coatings increased the hardness of the NiTi alloy by a combined strengthening effect of the eutectics and fine microstructure. The corrosion resistance of the coated part was improved. The coatings with great corrosion resistance could keep the coated parts inert in an aggressive environment, and effectively restrain the release of toxic Ni ions, which means that the Ti-Nb alloy coatings are likely to be used as a biomaterial for medical applications.

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Mechanical behavior of Ti-Ta-based surface alloy fabricated on TiNi SMA by pulsed electron-beam melting of film/substrate system

Cited by 58 publications

References 35 publications

Influence of Beam Power on Young’s Modulus and Friction Coefficient of Ti–Ta Alloys Formed by Electron-Beam Surface Alloying

Influence of Beam Power on Young’s Modulus and Friction Coefficient of Ti–Ta Alloys Formed by Electron-Beam Surface Alloying

EVOLYuTsIYa FAZOVOGO SOSTAVA I STRUKTURY POVERKhNOSTNYKh SLOEV V SISTEMAKh TiNi+Si I TiNi+Ta V USLOVIYaKh VOZDEYSTVIYa POTOKA ELEKTRONOV S UChETOM OSOBENNOSTEY NDS

Microstructure and Corrosion Behavior of Ti-Nb Coatings on NiTi Substrate Fabricated by Laser Cladding

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