Effect of the micro-structure evolution of friction layer on the sliding tribology behavior of TiAl-10 Wt.% Ag at 16 N-0.5 m/s. Issue 9 (19th November 2018)

• Record Type: Journal Article
• Authors: Yang, Kang; Ma, Hongru; Liu, Xiyao; Zhang, Yangming
• Is Part Of: Industrial lubrication and tribology. Volume 70:Issue 9(2018)
• Page Start: 1676
• Page End: 1683
• Publication Date: 2018-11-19
• Subjects: Additives -- Surface analysis -- Solid lubricants -- Sliding wear -- Electron microscopy; Lubrication and lubricants -- Periodicals; Tribology -- Periodicals; 621.89
• DOI: 10.1108/ILT-09-2017-0249
• Languages: English
• ISSNs: 0036-8792

Abstract

Abstract : Purpose: This paper aims to study the micro-structure evolution of friction layers to optimize the friction and wear behaviors of TiAl-based material. It further enlarges the scope of using TiAl alloys and increase in the service life of TiAl alloy-made mechanical components, especially under some extreme conditions. Design/methodology/approach: To study the structure evolution of friction layers, the HT-1000 tribometer is used to study the friction and wear properties of as-prepared samples. With the assistance of field emission scanning electron microscopy and an electron probe micro-analyzer, the stratified structures in cross-sections and a surface morphology of the wear scars are well characterized. A ST400 surface profiler helps in better understanding of the three-dimensional texture profiles of wear scars. X-ray diffractometer (XRD) is also used to analyze phases in the as-prepared samples. Findings: An analysis method on the micro-structure evolution can provide better views to understand the influence of friction layers on the tribological behavior, at different wear stages. It finds that the micro-structure evolution of friction layers has an immediate effect on the friction coefficients and wear rates of TiAl-based material. It also proves to be a useful tool for evaluating the behaviors in friction and wear of TiAl-based material. Originality/value: The findings of this paper provide better assistance to explore the effect of friction layers on the friction and wear behaviors of TiAl-based materials. The results help in deep understanding of the micro-structure evolution of friction layers. It also increases the service life of TiAl-based mechanical components.