Effect of Cr content on microstructure, mechanical properties and corrosion behavior of Ti6Al4V alloy produced by selective laser melting

Chen, Guoxia; Zhai, Qiang; Ma, Zhenghang; Yin, Xiaotian; Zhang, Qingxia; Zhou, Hanxiao; Meng, Long; Wang, Kunlun; Wang, Shenghai; Wang, Li

doi:10.1080/10667857.2021.1921098

Cited by 10 publications

(2 citation statements)

References 69 publications

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“…The i corr values of studied alloys were in the sequence of Ti6Al4V-5Cu UG < Ti6Al4V-5Cu CG ≪ Ti6Al4V CG as indicated in Table , confirming that copper alloying improved the electrochemical corrosion resistance of the Ti6Al4V CG alloy in simulated body fluids. Previous work demonstrated that the corrosion behavior of the Ti6Al4V alloy was closely related to the phase composition. , Chen et al found that the SLM-Ti6Al4V alloy with a lower fraction of the α phase and a higher fraction of the β phase showed better corrosion resistance in 3.5% NaCl solution. Bai et al indicated that Ti6Al4V alloys with less α phase and more β phase have better corrosion resistance in PBS solutions, which was mainly because the phase with lower surface potential helped to form a more stable passive film and improved corrosion resistance. , Our current results also confirmed that Cu addition decreased the fraction of the α phase with higher surface potential and increased the fraction of β and Ti 2 Cu phases with lower surface potential in both Ti6Al4V-5Cu CG and Ti6Al4V-5Cu UG alloys compared with the Ti6Al4V CG alloy as shown in Table and Figure .…”

Section: Discussionmentioning

confidence: 99%

“…Previous work demonstrated that the corrosion behavior of the Ti6Al4V alloy was closely related to the phase composition. 56,57 Chen et al 58 found that the SLM-Ti6Al4V alloy with a lower fraction of the α phase and a higher fraction of the β phase showed better corrosion resistance in 3.5% NaCl solution. Bai et al 59 indicated that Ti6Al4V alloys with less α phase and more β phase have better corrosion resistance in PBS solutions, which was mainly because the phase with lower surface potential helped to form a more stable passive film and improved corrosion resistance.…”

Section: Corrosion Behavior Of the Ti6al4v-5cu Ug Alloymentioning

confidence: 99%

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Corrosion Behavior and Bio-Functions of the Ultrafine-Grained Ti6Al4V-5Cu Alloy with a Dual-Phase Honeycomb Shell Structure in Simulated Body Fluid

Liu

Siddiqui

et al. 2023

ACS Biomater. Sci. Eng.

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Titanium alloys are widely used in biomedical applications. However, cases of implant failure due to fatigue fracture and bacterial infection are common. In addition, implants are susceptible to metal ions (Al, V) released by long-term exposure to human body fluids, which causes neuropathy, mental disorders, and other diseases. Thus, development of novel materials to achieve longterm safety of implants is currently a research hotspot. Recently, our research group has developed an ultrafine-grained Ti6Al4V-5Cu alloy with a unique "dual-phase honeycomb shell" (DPHS) structure, which possesses high fatigue strength and stability. This study further affirmed its higher corrosion behavior, antibacterial properties, and cytocompatibility compared to the coarse-grained Ti6Al4V and Ti6Al4V-5Cu alloys. The ultrafine-grained structure of Ti6Al4V-5Cu having DPHS increased the proportion of phases (Cu-rich phases, β-phase, and Ti 2 Cu intermetallic phase) with a lower surface potential. It was observed that the developed microstructure was conducive to a stable configuration of the oxide (passive) layer on the alloy surface. In addition, the low-phase interfacial energies of the ultrafine-grained structure with DPHS even facilitated the improvement of the denseness of the protective passive film and eventually enhanced the corrosion behavior. Besides, the fine-Cu-rich phases and the micro-galvanic couples formed between them and the matrix significantly increased the contact frequency of bacteria, thus increasing the contact sterilization efficiency of the ultrafine-grained Ti6Al4V-5Cu alloy. These results showed that the new ultrafine-grained Ti6Al4V-5Cu alloy has excellent corrosion resistance and biological functions for clinical application.

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Section: Discussionmentioning

confidence: 99%

Section: Corrosion Behavior Of the Ti6al4v-5cu Ug Alloymentioning

confidence: 99%

Corrosion Behavior and Bio-Functions of the Ultrafine-Grained Ti6Al4V-5Cu Alloy with a Dual-Phase Honeycomb Shell Structure in Simulated Body Fluid

Liu

Siddiqui

et al. 2023

ACS Biomater. Sci. Eng.

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Passivation Behavior of Water‐Quenched and Heat‐Treated Ti–6Al–4V in Hank's Solution

Jin

Zhang

et al. 2023

Adv Eng Mater

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Ti‐6Al‐4V is a prevalent material utilized in various industrial applications, and its microstructure modification commences with quenching, followed by diverse heat treatments. Although many works have concentrated on the mechanical properties of Ti‐6Al‐4V with tailored microstructures resulting from heat treatments, their corresponding corrosion behavior still lacks attention. This study investigates the corrosion behavior of water‐quenched Ti‐6Al‐4V that undergoes heat treatment between 700 °C and 850 °C in Hank’s solution. Various electrochemical methods, such as open circuit potential tests, potentiodynamic/potentiostatic polarization, electrochemical impedance spectroscopy, and Mott‐Schottky tests, were jointly employed. The water‐quenched Ti‐6Al‐4V displays a quick‐cooling microstructure with a plentiful amount of martensite α/α' phase. Heat treatment at 700 °C significantly alters the microstructures of the samples. Due to competitive factors, heat treatment at low temperatures results in uneven alloy composition, leading to poor uniformity of the passive film. At this phase, negative effects dominate, and the corrosion resistance of the samples deteriorates. When the heat treatment temperature increases to 850 °C, the content of β phase, which possesses better corrosion resistance, increases and becomes dominant. Consequently, the corrosion resistance of the samples improves in Hank’s solution.This article is protected by copyright. All rights reserved.

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Microstructures and Tensile Properties of Ti-6Al-4 V-(0, 2.5, 5, 7.5)Mo Alloys Manufactured by Metal Injection Molding

Suwanpreecha,

Songkuea,

Tange

et al. 2024

Metall Mater Trans A

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Effect of Cr content on microstructure, mechanical properties and corrosion behavior of Ti6Al4V alloy produced by selective laser melting

Cited by 10 publications

References 69 publications

Corrosion Behavior and Bio-Functions of the Ultrafine-Grained Ti6Al4V-5Cu Alloy with a Dual-Phase Honeycomb Shell Structure in Simulated Body Fluid

Corrosion Behavior and Bio-Functions of the Ultrafine-Grained Ti6Al4V-5Cu Alloy with a Dual-Phase Honeycomb Shell Structure in Simulated Body Fluid

Passivation Behavior of Water‐Quenched and Heat‐Treated Ti–6Al–4V in Hank's Solution

Microstructures and Tensile Properties of Ti-6Al-4 V-(0, 2.5, 5, 7.5)Mo Alloys Manufactured by Metal Injection Molding

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