Influence of Sintering Temperature on Microhardness and Tribological Properties of Equi-Atomic Ti-Al- Mo-Si-W Multicomponent Alloy

4th International Conference on Manufacturing, Material and Metallurgical Engineering

Kanyane, L. Rudolf^1 ; Popoola, A. Patricia^1 ; Malatji, Nicholus^1

Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa^1

关键词: Microhardness tester;    Morphological evolution;    Multi-component alloy;    Phase analysis;    Phase formations;    Secondary phase;    Sintering temperatures;    Tribological properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/538/1/012009/pdf
DOI  :  10.1088/1757-899X/538/1/012009

来源: IOP

【 摘 要 】

This work aim to investigate the effect of sintering temperature on microhardness and tribological properties of novel equi-atomic TiAlMoSiW HEA fabricated via spark plasma sintering. The influence of Spark plasma sintering temperature on morphological evolution and phase formation was also investigated. The microstructure and the phases formed for the developed HEA were examined using scanning electron microscopy (SEM) and X-ray diffractometry (XRD) respectively. The microhardness and tribological properties were studied using a diamond base microhardness tester Rtec tribometer. It was noticed that sintering temperature has an effect on microhardness and tribological properties. Phase analysis of the samples displayed that the alloy exhibited a bcc matrix with secondary phase precipitate of ordered fcc TiSi2 phase. The developed HEA showed improved mechanical properties as the sintering temperature increases.