Investigation of mechanical properties and microstructure of Ti-15% Mo alloy produced by mechanical alloying and sintering with SPS (MA-SPS)

ABSTRACT

The goal of this study was to investigate the mechanical properties and microstructure of Ti-15% Mo alloy fabricated using the mechanical alloying and spark plasma sintering (MA-SPS) method. Accordingly, Ti and Mo powders were milled for different times, including 5, 15, 25, 35, and 45 h, and the SPS technique for sintering under a pressure of 25 MPa at 1100°C was used. The X-ray diffraction (XRD) analysis, optical and electron microscopy (SEM), hardness measurements, and compression testing were used to study the phases formed, the morphology of powders, microstructure, and mechanical properties of the as-prepared samples, respectively. The results revealed that owing to increasing the mechanical milling time, the percentage of the beta phase formed was higher, and in addition, it influenced the microstructure and mechanical properties of the samples fabricated after the sintering process.

GRAPHICAL ABSTRACT

KEYWORDS:

• Ti-15% Mo
• mechanical alloying
• SPS
• beta phase

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Mahdi Mirzaaghaei

Mahdi Mirzaaghaei is a Ph.D. student at faculty of Metallurgical and Materials Engineering, Semnan University, Semnan, Iran.

Fathallah Qods

Fathallah Qods is an Associate Professor at faculty of Metallurgical and Materials Engineering, Semnan University, Semnan, Iran.

Hossein Arabi

Hossein Arabi is a Professor at the School of Metallurgy and Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran.

Mostafa Milani

Mostafa Milani is Ph.D. in Material Science and Enginiering and a coach at the Department of Advanced Materials and Renewable Energies, Iranian Research Organization for Science and Technology, Tehran, Iran.

Bagher Mohammad Sadeghi

Bagher Mohammad Sadeghi is an Assistant Professor at the School of Metallurgy and Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran.

Mohammad Sadegh Nourbakhsh

Mohammad Sadegh Nourbakhsh is an Associate Professor at faculty of Metallurgical and Materials Engineering, Semnan University, Semnan, Iran.