Microstructure Development of Spark Plasma Sintered Ti-Nb Alloy by Heat Treatment

• Autorzy: Haq M. A. , Abbas S. F. , Eom N. S. A. , Kim T. S. , Lee B. , Park K.-T. , Kim B. S.

Identyfikatory

DOI

10.24425/123822

• Języki publikacji: EN

Abstrakty

EN

The β-phase Titanium (β-Ti) alloys have been under the spotlight in the recent past for their use as biomedical prosthetic materials owing to their excellent properties such as low elastic modulus, high corrosion resistance and tensile strength. Recently, Niobium (Nb) has gained a lot of attention as a β-phase stabilizing element in Ti alloys to replace Vanadium (V) due to its excellent solubility in Ti, low elastic modulus and biocompatibility. In this work, low cost Ti-20Nb binary alloy has been fabricated via powder metallurgy procedures. The blended powder mixtures of Ti and Nb were sintered at 900°C for 20 mins by the Spark Plasma Sintering (SPS) with an applied uniaxial pressure of 40 MPa. The heating rate was fixed at 50°C/min. The sintered alloy was subject to heat treatments at 1200°C in vacuum condition for various time durations. The characterizations of microstructure obtained during this process were done using FE-SEM, EDS and XRD. By increasing heat treatment time, as understood, the volume of residual Nb particles was decreased resulting in accelerated diffusion of Nb into Ti. Micro hardness of the alloy increased from 340 to 355 HV with the increase in β phase content from 30 to 45%. The resultant alloys had relatively high densities and homogenized microstructures of dispersed lamellar β grains in α matrix.

Słowa kluczowe

EN

TiNb alloy; Spark plasma sintering; Heat treatment; microstructure; β-phase titanium

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 3
• Strony: 1429--1432
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Haq M. A.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea
• University of Sciencea and Technology, Daejeon, Korea

autor

Abbas S. F.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea
• University of Sciencea and Technology, Daejeon, Korea

autor

Eom N. S. A.

• University of Sciencea and Technology, Daejeon, Korea

autor

Kim T. S.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea
• University of Sciencea and Technology, Daejeon, Korea

autor

Lee B.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea

autor

Park K.-T.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea

autor

Kim B. S.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Incheon, Korea
• University of Sciencea and Technology, Daejeon, Korea

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).