Internal friction in Ti29.7Ni50.3Hf20 alloy with high temperature shape memory effect

Shuitcev, A.; Li, L.; Маркова, Г. В.; Golovin, I.S.; Tong, Y.X.

doi:10.1016/j.matlet.2019.127025

Cited by 18 publications

(4 citation statements)

References 19 publications

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“…Fourth, SIM-aging provides the growth of internal friction. Previous findings indicate that the maximum peaks of internal friction Q −1 are 0.023 and 0.015 for homogenized and subsequently quenched NiTiHf polycrystals at cooling and heating, respectively [22]. Such a low peak (in comparison with NiTi alloy) is associated with the low mobility of twinning/interphase boundaries in martensite.…”

Section: Microstructure and Thermally-induced Mtmentioning

confidence: 90%

“…However, SIM-aging resulted in significant increase of internal friction, around double (up to 0.04 and 0.03), from the initial state. According to [22], internal friction growth is evidence of increased mobility of twinning/interphase boundaries. It is assumed, that such an effect is associated with increased compatibility between nanosized H-phase particles and twinned в19 ′martensite during SIM-aging.…”

Section: Microstructure and Thermally-induced Mtmentioning

confidence: 99%

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The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy

Tagiltsev

Panchenko

Timofeeva

et al. 2021

Smart Mater. Struct.

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The present study investigates the high-temperature shape memory effect (SME) in heterophase Ni50.3Ti32.2Hf17.5 polycrystals with nanosized H-phase particles after stress-induced martensite (SIM) aging in tension and compression. SIM aging created the conditions for fully reversible two-way SME with a strain of up to 50% of the one-way shape memory strain. SIM aging altered the viscoelastic properties of material, in particular, the elastic moduli of austenite and martensite increased, as did internal friction. Increased interface mobility is suggested as the reason for internal friction growth.

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Section: Microstructure and Thermally-induced Mtmentioning

confidence: 90%

Section: Microstructure and Thermally-induced Mtmentioning

confidence: 99%

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy

Tagiltsev

Panchenko

Timofeeva

et al. 2021

Smart Mater. Struct.

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“…As for the crystals aged at 773 K, SIM-aging increased the elastic modulus of both phases by 13 GPa and 5 GPa (for martensite and austenite, respectively), and the internal friction increased threefold (Table 1). According to [21], increased internal friction is evidence of increased mobility of twinning/interphase boundaries. It is assumed that such an effect is associated with increased compatibility between nano-sized H-phase particles and twinned B19 -martensite during SIM-aging.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Subsequent Stress-Induced Martensite Aging on the Viscoelastic Properties of Aged NiTiHf Polycrystals

Tagiltsev¹,

Panchenko²,

Timofeeva³

et al. 2021

Metals

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This study investigated the effect of stress-induced martensite aging under tensile and compressive stresses on the functional and viscoelastic properties in Ni50.3Ti32.2Hf17.5 polycrystals containing dispersed H-phase particles up to 70 nm in size obtained by preliminary austenite aging at 873 K for 3 h. It was found that stress-induced martensite aging at 428 K for 12 h results in the appearance of a two-way shape memory effect of −0.5% in compression and +1.8% in tension. Moreover, a significant change in viscoelastic properties can be observed: an increase in internal friction (by 25%) and a change in elastic modulus in tensile samples. The increase in internal friction during martensitic transformation after stress-induced martensite aging is associated with the oriented growth of thermal-induced martensite. After stress-induced martensite aging, the elastic modulus of martensite (EM) increased by 8 GPa, and the elastic modulus of austenite (EA) decreased by 8 GPa. It was shown that stress-induced martensite aging strongly affects the functional and viscoelastic properties of material and can be used to control them.

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“…For example, the addition of Cu can significantly improve the damping of Ni-Ti SMAs, but excess Cu will embrittle the alloy and reduce the machinability [ 10 ]. The addition of Hf and H elements can form a new damping peak in Ni-Ti SMAs, but the resultant alloys have low modulus and poor deformability in the martensitic state [ 11 ]. In recent years, the addition of Nb to Ni-Ti SMAs has attracted ever more attention because of the excellent comprehensive properties of the resultant alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nb on the Damping Property and Pseudoelasticity of a Porous Ni-Ti Shape Memory Alloy

et al. 2023

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In order to develop novel high damping materials with excellent pseudoelasticity (PE) properties to meet the application requirements in aerospace, medical, military and other fields, porous Ni50.8Ti49.2 shape memory alloy (SMA) was prepared by the powder metallurgy method. Different contents of Nb element were added to regulate the microstructures. It was found that after adding the Nb element, the number of precipitates significantly decreased, and the Nb element was mainly distributed in the Ni-Ti matrix in the form of β-Nb blocks surrounded by Nb-rich layers. Property tests showed that with the increase in Nb content, the damping and PE increased first and then decreased. When the Nb content reached 9.0 at.%, the highest damping and the best PE could be achieved. Compared with the porous Ni-Ti SMA without Nb addition, the damping and PE increased by 60% and 35%, respectively. Correlated mechanisms were discussed.

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Internal friction in Ti29.7Ni50.3Hf20 alloy with high temperature shape memory effect

Cited by 18 publications

References 19 publications

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy

The Effect of Subsequent Stress-Induced Martensite Aging on the Viscoelastic Properties of Aged NiTiHf Polycrystals

Effect of Nb on the Damping Property and Pseudoelasticity of a Porous Ni-Ti Shape Memory Alloy

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Internal friction in Ti29.7Ni50.3Hf20 alloy with high temperature shape memory effect

Cited by 18 publications

References 19 publications

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni50.3Ti32.2Hf17.5 high-temperature shape memory alloy

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni50.3Ti32.2Hf17.5 high-temperature shape memory alloy

The Effect of Subsequent Stress-Induced Martensite Aging on the Viscoelastic Properties of Aged NiTiHf Polycrystals

Effect of Nb on the Damping Property and Pseudoelasticity of a Porous Ni-Ti Shape Memory Alloy

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The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy

The effect of stress-induced martensite aging in tension and compression on B2–B19′ martensitic transformation in Ni_50.3Ti_32.2Hf_17.5 high-temperature shape memory alloy