Simultaneous sintering of low-melting-point Mg with high-melting-point Ti via a novel one-step high-pressure solid-phase sintering strategy

Cai, Xuecheng; Ding, Sanbo; Li, Zhongjie; Zhang, Xin; Wen, Kangkang; Xu, Luzhou; Zhang, Yang; Peng, Yan; Shen, Tongde

doi:10.1016/j.jallcom.2020.158344

Cited by 15 publications

(15 citation statements)

References 25 publications

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“…It could be clearly seen that a large amounts of Sc particles were presented on the Mg-Sc part. The fusion temperature of Mg and Sc was 924 K and 1814 K, respectively[ 40 , 41 ]. The applied energy density during SLM was sufficient to fully melt the Mg powder, but some of Sc particles melted partially due to the higher melting point.…”

Section: Resultsmentioning

confidence: 99%

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Yang¹,

Ling²,

Yang³

et al. 2022

IJB

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Magnesium (Mg) degrades too fast in human body, which limits its orthopedic application. Single-phase Mg-based supersaturated solid solution is expected to possess high corrosion resistance. In this work, rare earth scandium (Sc) was used as alloying element to prepare Mg(Sc) solid solution powder by mechanical alloying (MA) and then shaped into implant using selective laser melting (SLM). MA utilizes powerful mechanical force to introduce numerous lattice defects, which promotes the dissolution of Sc in Mg matrix and forms supersaturated solid solution particles. Subsequently, SLM with fast heating and cooling rate maintains the original supersaturated solid solution structure. Immersion tests revealed that high Sc content significantly enhanced the corrosion resistance of Mg matrix because of the formation of protective corrosion product film, which was also proved by the electrochemical impedance spectroscopy measurements. Thereby, Mg(Sc) alloy showed a relatively low degradation rate of 0.61 mm/year. In addition, cell tests showed that the Mg(Sc) exhibited favorable biocompatibility and was suitable for medical application.

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Section: Resultsmentioning

confidence: 99%

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Yang¹,

Ling²,

Yang³

et al. 2022

IJB

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“…At high temperatures and pressures, the rupture of the oxide layer and the plastic flow of the material effectively improve the interparticle bonding. [22,33] Moreover, according to the well-known Clausius-Clapeyron equation, [34] the melting point of metals increases with increasing pressure, which is more important for Mg (70 K GPa À1 ). [35] It is noteworthy that MgO can be easily detected on the Mg surface, while the oxide particles on the Ti surface are difficult to be observed in the interfacial region, as shown in Figure 5a,b.…”

Section: High-pressure Solid-phase Sinteringmentioning

confidence: 99%

“…Therefore, simultaneous sintering of low melting point Mg and high melting point Ti under high pressure conditions can be expected. [22] The microstructural evolution of Ti-Mg composites during HPSSS is shown schematically in Figure 6. [22] The almost completely dense pure Ti and mechanically weakly bound Ti-Mg composites can be obtained by high pressure loading under room temperature conditions.…”

Section: High-pressure Solid-phase Sinteringmentioning

confidence: 99%

“…[22] The microstructural evolution of Ti-Mg composites during HPSSS is shown schematically in Figure 6. [22] The almost completely dense pure Ti and mechanically weakly bound Ti-Mg composites can be obtained by high pressure loading under room temperature conditions. Meanwhile, the melting point of Mg increases significantly to above 1000 °C and below 4 GPa, thus enabling solid-state sintering at 1000 °C high sintering temperature, which can effectively promote the diffusion of Ti and Mg atoms and accelerate the sintered Ti-Ti, Ti-Mg, and Mg-Mg interface.…”

Section: High-pressure Solid-phase Sinteringmentioning

confidence: 99%

“…[23] These existential problems have been an insurmountable obstacle to the successful preparation of Ti-Mg composites by conventional casting or powder sintering processes. [22,[24][25][26] As a medical material, titanium-magnesium composite not only combines the high strength of titanium, but also retains the high biocompatibility of magnesium. At present, there are few researches on the biological properties of titaniummagnesium alloy when used as medical materials.…”

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confidence: 99%

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Strengthening Mechanisms of Ti–Mg Composite for Biomaterials: A Review

Xue,

Luo,

Zhang

et al. 2023

Adv Eng Mater

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Titanium (Ti) has been widely used in biomedical implants due to its excellent mechanical properties and biocompatibility. However, the “stress shielding” effect greatly limits the application of titanium alloys in medical devices. Studies have shown that the incorporation of bioactive elements into the titanium alloy matrix is an effective way to impart specific biological functions to the material through the sustained release of biofunctional elements. Magnesium (Mg) and its alloys have good bioactivity and are potential candidates for biodegradable metal implants. Ti–Mg composites are of increasing interest for biomedical applications. However, the incompatibility between Ti and Mg, such as immiscibility and large melting point difference, has been a great obstacle in preparing Ti–Mg composites. In addition, the biocompatibility of Ti–Mg metal matrix composites in vivo still needs to be further investigated. Herein, the recent research progress of Ti–Mg composites for biomedical implants is reviewed, focusing on their preparation methods and properties. The preparation methods such as powder metallurgy technology and 3D printing are introduced in detail. In addition, the mechanical and corrosion resistance as well as biocompatibility of Ti–Mg composites are discussed. Based on this, the problems and development prospects of Ti–Mg metal matrix composites are presented.

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Development of low content Ti-x%wt. Mg alloys by mechanical milling plus hot isostatic pressing

Carvajal

Ríos

Zuleta

et al. 2023

Int J Adv Manuf Technol

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Several authors have shown promising results using Ti and Mg to develop materials that combine the benefits of these two metals, such as their low density and absence of harmful second phases, which makes them attractive for aerospace and biomedical applications as well as for hydrogen storage. However, titanium and magnesium are almost immiscible and there are great differences in processing temperatures of these two metals. Within the techniques reported in the literature for obtaining Ti-Mg alloys, powder metallurgy and high-energy ball milling are possibly the most popular. In this work, Ti and Mg powders were mixed using a high-energy ball mill and subsequently these mixes were sintered by hot isostatic pressing (HIP), under various conditions, to obtain Ti-Mg alloys with Mg %wt. close to the limit of solubility (x < 2%wt.). The results showed the influence of the sintering parameters in the microstructure of the sintered material, which allowed us to obtain a Ti-Mg alloy instead of a composite material.

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Simultaneous sintering of low-melting-point Mg with high-melting-point Ti via a novel one-step high-pressure solid-phase sintering strategy

Cited by 15 publications

References 25 publications

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Selective Laser Melted Rare Earth Magnesium Alloy with High Corrosion Resistance

Strengthening Mechanisms of Ti–Mg Composite for Biomaterials: A Review

Development of low content Ti-x%wt. Mg alloys by mechanical milling plus hot isostatic pressing

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