Influence of High Energy Milling Time on the Ti-50Ta Biomedical Alloy Structure

Matuła, Izabela; Dercz, Grzegorz; Zubko, Maciej; Prusik, Krystian; Pająk, L.

doi:10.12693/aphyspola.130.1033

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…The literature has indicated that as little as 25% wt. Ta can cause the appearance of the β-phase and, with increasing tantalum content, the β-phase proportion increases [ 13 , 27 , 28 , 29 , 30 ]. We also detected a non-stoichiometric phase of Zr0.11Ti0.89, likely located in the transition zones.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of New Functional Graded Material Based on Ti, Ta, and Zr by Powder Metallurgy Method

et al. 2021

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In view of the aging population and various diseases worldwide, the demand for implants has been rapidly increasing. Despite the efforts of doctors, engineers, and medical companies, the fabrication of and procedures associated with implants have not yet been perfected. Therefore, a high percentage of premature implantations has been observed. The main problem with metal implants is the mechanical mismatch between human bone and the implant material. Zirconium/titanium-based materials with graded porosity and composition were prepared by powder metallurgy. The whole samples are comprised of three zones, with a radial gradient in the phase composition, microstructure, and pore structure. The samples were prepared by a three-step powder metallurgy method. The microstructure and properties were observed to change gradually with the distance from the center of the sample. The x-ray diffraction analysis and microstructure observation confirmed the formation of diffusive connections between the particular areas. Additionally, the mechanical properties of the obtained materials were checked, with respect to the distance from the center of the sample. An analysis of the corrosion properties of the obtained materials was also carried out.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of New Functional Graded Material Based on Ti, Ta, and Zr by Powder Metallurgy Method

et al. 2021

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“…The fracture process occurs when the larger particles disintegrate into smaller pieces due to overloading as a result of continuous collisions [7,8]. Depending on the ductility of the used material being milled, fracturing or cold welding can dominate and result in the formation of a lot of small particles, or when there is complete cold welding with the balls and the walls of the milling bowls the process s efficiency and material recovery are negatively affected [3,[9][10][11][12]. Therefore, maintaining a suitable relationship regarding the cold welding and fracturing phenomena ensures a stable particle size.…”

Section: Introductionmentioning

confidence: 99%

“…This is due to the fact that, in the case of a planetary ball mill, the mechanical alloying of the material results mainly from the strong interactions of the material with the balls during the rotation of the bowls [13,14]. In addition, MA is a process that allows materials of different structure types to result in amorphous [15], nanocrystalline [12,16,17] and porous materials [13,[17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Role of Sn as a Process Control Agent on Mechanical Alloying Behavior of Nanocrystalline Titanium Based Powders

2020

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In this study, the effects of Sn as a process control agent (PCA) on the final powder sizes, morphology, homogenization and alloying process of a new titanium alloy were investigated. Two kinds of powders, Ti10Ta8Mo and Ti10Ta8Mo3Sn (wt %), were prepared using a mechanical alloying process. For the Ti10Ta8Mo3Sn (wt %) alloy, the Sn element was used as PCA to enhance the milling process in the planetary ball mill. The milling process of both compositions was carried out with 200 rpm for 10, 15, 20, 40, 60, 80 and 100 h. The results confirmed that using Sn as a process control agent can result in a relatively good size distribution and better yield performance compared to samples without Sn addition. The phase analysis using X-ray diffraction proved the formation of the α nanocrystalline phase and the partial phase transformation from α to nanocrystalline β phases of both alloy compositions. The Scaning Electron Micoscope- Backscattered Electrons SEM-BSE results confirmed that the use of Sn as the PCA can provide a better homogenization of samples prepared by at least 60 h of ball milling. Furthermore, the presence of Sn yielded the most uniform, spheroidal and finest particles after the longest milling time.

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“…In the scientific literature, there are evidences of successful preparations of titanium-based materials with this production method. [8][9][10] This production method has a number of significant advantages. It allows creating alloys of materials with large differences between their melting temperatures or densities.…”

Section: Introductionmentioning

confidence: 99%

Effect of ball milling on the properties of the porous Ti–26Nb alloy for biomedical applications

Dercz¹,

Matuła²

2017

Mater. Tehnol.

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The current study investigated the effect of the ball-milling time on the structural characteristics and pore morphology of a biomedical porous alloy. An open-cell porous material was synthesized by mechanical alloying and sintering. Commercially available elemental metal powders of Ti and Nb were used as the starting materials. Elemental metal powders with a nominal composition of Ti-26Nb (a/%) were milled in a planetary ball mill. During the testing, the powders were milled for two milling times: 50 h and 70 h. During the shorter milling time, the speed of 200 min -1 was applied, and during the longer milling time, the speed of 400 min -1 was applied. The powders were cold pressed under a pressure of 750 MPa and then sintered at 1000°C for 24 h. The effects of the powder milling time on the microstructure and mechanical properties of the porous structure were investigated with optic microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness, nanoindentation and nanomachining tests. The hardness and elastic modulus were calculated from the load-displacement data obtained with nanoindentation using a three-sided, pyramidal, diamond (Berkovich) indenter tip. The X-ray diffraction results confirmed the presence of the a and b phases. An analysis of diffraction patterns revealed a decrease in the lattice parameters for the 70 h milling. In summary, it should be pointed out that the material has a hierarchical structure, obtained during the successive stages of milling. The observed grains are composed of many smaller grains, the size of which decreased with an increase in the milling time. Keywords: mechanical alloying, porosity, nanoindentation, Ti-26Nb alloy V {tudiji so preiskovali vpliv razli~no dolgega~asa krogli~nega mletja na strukturne zna~ilnosti in morfologijo por biomedicinske porozne Ti-26Nb zlitine (a/%). Porozni material z odprtimi celicami je bil sintetiziran z mehanskim legiranjem in sintranjem. Osnovni metalur{ki prahovi z nominalno vsebnostjo Ti-26Nb (a/%) so bili mleti v planetarnem krogelnem mlinu. Med testiranjem so bili prahovi mleti pri dveh razli~nih~asih: 50 h in 70 h. Med kraj{im~asom mletja je bila uporabljena hitrost mletja 200 min -1 in med dalj{im~asom mletja je bila uporabljena hitrost 400 min -1 . Prahovi so bili hladno stiskani pod tlakom 750 MPa in nato sintrani pri 1000°C za 24 h. Preiskovali so vpliv razli~nega~asa mletja prahu na mikrostrukturo in na mehanske lastnosti porozne strukture z opti~nim mikroskopom, s SEM-in XRD-analizo ter dolo~evanjem mikrotrdote in mehanske nanoobdelave. Trdoto in modul elasti~nosti so izra~unali iz meritev odvisnosti med obremenitvijo in globino vtisa tristranske diamantne konice (po Berkovichu). Rezultati rentgenske difrakcije so potrdili prisotnost a in b faz. Skratka, poudariti je treba, da ima material hierarhi~no strukturo, ki je posledica faze mletja. Pregledana zrna so sestavljena iz mnogo manj{ih podzrn, katerih velikost se je zmanj{evala s podalj{evanjem~asa mletja.

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Influence of High Energy Milling Time on the Ti-50Ta Biomedical Alloy Structure

Cited by 7 publications

References 18 publications

Fabrication and Characterization of New Functional Graded Material Based on Ti, Ta, and Zr by Powder Metallurgy Method

Fabrication and Characterization of New Functional Graded Material Based on Ti, Ta, and Zr by Powder Metallurgy Method

Role of Sn as a Process Control Agent on Mechanical Alloying Behavior of Nanocrystalline Titanium Based Powders

Effect of ball milling on the properties of the porous Ti–26Nb alloy for biomedical applications

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