Sintering and Heat Treatment of Titanium Alloys by Pulsed Electric Current Sintering

Zhang, F.; Quan, Yujie; Reich, Michael; Keßler, Olaf; Burkel, E.

doi:10.5772/53705

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Some applications of this alloy are encountered, as example blades, discs, rings, airframes, fasteners, implants, etc. Its thermophysical properties are often presented in published articles such as that of Bao-Cheng et al [8] and Zhang et al [9] but at specific conditions of use. However, their values do not change much with the change of these conditions.…”

Section: Thermophysical Propertiesmentioning

confidence: 99%

3D Transient Heat Transfer Simulation of Spray Cooling on Titanium Alloy Slab

Elguerri¹

2020

ti-ijes

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In production of metals, commonly performed at elevated temperature, an intensive cooling is accompanied by a large heat transfer with the surrounding medium. Such cooling modifies strongly the properties and the structure of the product. Knowledge of the temperature evolution in a material allows controlling its important parameters in order to improve its qualities and optimize his costs. The focus of this article is to simulate the heat transfer by conduction in a slab on Titanium alloy. The slab in thermal interaction with the surrounding midst of its all sides by convection and radiation is sprayed by water on his upper side which must cool to reach the saturation temperature of water. During the cooling process, the impact of water droplets on the slab is obtained by twin overlapping sprays with elliptical shapes. The simulation, based on numerical solving in three dimensions of nonlinear transient heat equation, is carried out the COMSOL Multiphysics software in order to reach a temperature distribution inside the slab. Results are presented in temperature variation form which occurring in the slab and of heat flux involved to evaluate the heat transfer rate.

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Section: Thermophysical Propertiesmentioning

confidence: 99%

3D Transient Heat Transfer Simulation of Spray Cooling on Titanium Alloy Slab

Elguerri¹

2020

ti-ijes

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“…The utilization of pulsed current for treating titanium alloys has been reported in various studies, owing to its advantages such as high efficiency, environmentally friendly characteristic, and strong operability. [7][8][9] Ma et al [10] employed pulsed current thermal-hydrogen treatment on Ti-6Al-4V and found that the lamellar β phase was broken into spherical shapes. Zhao et al [11] applied equal channel angular pressing to process Ti-6Al-4V after pulsed current treatment and reported that the elongation of the specimen was increased by 66.5%.…”

Section: Introductionmentioning

confidence: 99%

Recrystallization Behavior of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si Alloy under Electroshocking Treatment

Zhou,

Sun,

Wen

et al. 2024

Adv Eng Mater

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In this work, a novel electroshocking treatment (EST) method was employed to modify the microstructure of Ti‐6.5Al‐3.5Mo‐1.5Zr‐0.3Si alloy. The microstructural morphology and texture distribution after EST were characterized and analyzed to study the recrystallization behavior of the titanium alloy. After EST with 0.04 s, secondary αs phase transformed into β phase. After EST with 0.06 s, surrounding the αp phase, a significant amount of needle‐like martensitic phase (αM) precipitated. Electron backscatter diffraction results revealed that EST reduced intragranular orientation gradients, resulting in a convergence of each point orientations within individual grains. Under longer EST time, grain boundaries displayed greater irregularity. After EST with 0.05 s, partial recrystallization took place, and with an increase of EST time to 0.06 s, all deformed grains underwent complete recrystallization, forming defect‐free recrystallized grains. A substantial enhancement in texture intensity for both α and β phases, exhibiting prominent preferred orientations, and the increase in hardness values was contributed to the precipitation of αM phase. The stress analyses indicated that EST can optimize the distribution of residual stress and offer a potential solution for improving fatigue performance. All results showed that EST was an effective approach for manipulating the microstructure and optimizing the residual stress distribution of titanium alloys.This article is protected by copyright. All rights reserved.

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