Mechanical properties and tensile fracture of Ti–Al–V alloy strip under electropulsing-induced phase change

Ye, Xiaoxin; Tse, Zion Tsz Ho; Tang, Guoyi

doi:10.1557/jmr.2014.367

Cited by 15 publications

(5 citation statements)

References 34 publications

(33 reference statements)

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“…In the substrate zone ( Figure 7 a), the intensity of the highest diffraction peak experienced alterations, along with a decrease in some peak intensities of the Ti-α phase. This is mainly attributed to the reduction of temperature at the α-phase to β-phase transition caused by the pulsed-current-induced “electron wind” effect, promoting the phase transition from α-phase to β-phase [ 29 , 30 ]. Increasing the intensity of the pulsed current enhances this effect, leading to a greater proportion of the β-phase.…”

Section: Resultsmentioning

confidence: 99%

Effects of Pulsed Current on the Microstructure and Properties of Laser Cladded TC17 Titanium Alloy

Liu,

Zhou

et al. 2023

Materials

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In this study, a titanium alloy substrate was cladded with TC17 titanium alloy powder using the pulsed-current (PC)-assisted laser cladding technique. The primary objective of this research was to assess the impact of varying pulsed current intensities on the morphology, microstructure, and properties of samples. It is observed that the utilization of pulsed currents significantly enhances the metallurgical adhesion between the samples, concurrently diminishing the occurrence of porosity within the cladding layer. The incorporation of a pulsed current also has a positive impact on the microhardness and corrosion resistance of the samples. Furthermore, the synergistic influence of laser energy and a pulsed electrical current is found to promote a structural evolution in materials towards a state with lower electrical resistance. The introduction of a pulsed current leads to preferential growth of β grains with <100>// cladding direction in the cladding zone and obtains the typical {100} < 001 > cube texture, while the substrate zone exhibits a distinctive stripe-like configuration formed by the primary α-phase constituents. The outcomes of this study show the pivotal role of pulsed currents as an auxiliary technique for enhancing the properties and effecting microstructural modifications in titanium alloys during the laser cladding process.

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Section: Resultsmentioning

confidence: 99%

Effects of Pulsed Current on the Microstructure and Properties of Laser Cladded TC17 Titanium Alloy

Liu,

Zhou

et al. 2023

Materials

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“…This type of kernels appears mostly in fractional calculus [32]. Wu [33] extended Tatar's result to the equation…”

Section: + ≤ ∀ ≥ G S H G S Smentioning

confidence: 91%

A General Stability Result for Viscoelastic Equations with Singular Kernels

Hb¹

2015

J Appl Computat Math

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Viscoelasticity with regular relaxation functions has attracted the attention of many researchers over the last half century or so. Several results concerning existence and long-time behavior of solutions have been established. In particular the exponential, polynomial decay and recently what so called the general decay have been proved. For viscoelasticity, with singular kernels, less attention has been given and few results of existence and exponential decay have been established. In this paper we extend the general decay result, established for regularkernel viscoelasticity, to that with singular kernels. We also present some numerical test to illustrate our theoretical result.

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“…Some studies showed that the phase transformation of the metal matrix can be facilitated and the phase transition temperature can be reduced by pulse current. In general, the conversion temperature of α→β precipitation for Ti-6Al-4 V alloy is about 676 °C [112]. Nevertheless, α phase of the Ti alloy is gradually transformed into β phase under the action of pulse current.…”

Section: Phase Transitionmentioning

confidence: 99%

Effects of electrical pulse on metal deformation behaviors

Huang,

Yang,

Xing

et al. 2024

Mater. Res. Express

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As a kind of special energy field assisted plastic forming, electric pulse assisted plastic forming combines multiple physical fields, such as thermal, electrical, magnetic and mechanical effects, has multiple effects on metal. It has a good industrial application prospect in the fields of directional microstructure regulation of materials and preparation of new materials. The flow stress of metal materials can be effectively reduced by electro-pulse assisted forming. The action mechanism of pulse current includes thermodynamics (Joule heating effect) and kinetic (pure electro-plastic effect or athermal effect). Thermodynamically, electric pulses can be used to provide the energy for dislocation migration and atomic diffusion, and aid in microstructure changes such as recrystallization, phase transition and microcrack healing of metals. In terms of dynamics, electric pulse has an effect on the speed and path of dislocation structure evolution. On this basis, a series of theoretical models for accurately predicting the flow stress of materials in electrically assisted forming process were formulated by combining the stress-strain constitutive relationship considering the temperature rise effect and the pure electro-plastic effect. The accuracy of the predicting model is greatly enhanced by the introduction of electrical parameters. The mechanism for electrically assisted forming was further revealed.

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Mechanical properties and tensile fracture of Ti–Al–V alloy strip under electropulsing-induced phase change

Cited by 15 publications

References 34 publications

Effects of Pulsed Current on the Microstructure and Properties of Laser Cladded TC17 Titanium Alloy

Effects of Pulsed Current on the Microstructure and Properties of Laser Cladded TC17 Titanium Alloy

A General Stability Result for Viscoelastic Equations with Singular Kernels

Effects of electrical pulse on metal deformation behaviors

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