Homogenizing the composition of in-situ fabricated Ti2AlNb-based alloy via manipulating the droplet transfer mode of twin-wire arc additive manufacturing

Yu, Zeyang; Li, Zixiang; Guo, Yueling; Fu, Rui; Xu, Tianqiu; Liu, Changmeng

doi:10.1016/j.jallcom.2022.165992

Cited by 8 publications

(1 citation statement)

References 52 publications

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“…In recent years, the Ti 2 AlNb alloy has become one of the research hotspots in the materials science field due to its high yield strength, low density, small thermal expansion coefficient, superior fracture toughness, and good creep resistance [1][2][3]. The Ti 2 AlNb alloy has become an important candidate for the high thrust ratio of aero-engine components such as compressor casings, combustion chamber magazines, compressor discs, and blades [4,5]. The service performances of these components were dependent on the machined surface topography of Ti 2 AlNb with various cutting tools [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effects of PVD CrAlN/(CrAlB)N/CrAlN Coating on Pin–Disc Friction Properties of Ti2AlNb Alloys Compared to WC/Co Carbide at Evaluated Temperatures

Zhao,

Zheng,

et al. 2024

Metals

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Physical vapor deposition (PVD) coatings could affect the friction performance at the contact interface between Ti2AlNb alloy parts and tool couples. Suitable coating types could improve the friction properties of Ti2AlNb alloy while in contact with WC/Co carbide. In this study, the linear reciprocating pin–disc friction tests between the Ti2AlNb alloy and the WC/Co carbide tool couple, with the sole variation of the PVD CrAlN/(CrAlB)N/CrAlN coating were conducted within the temperature range of 25–600 °C. The antifriction properties of the Ti2AlNb alloy were estimated using the time-varied friction coefficients, the alloy wear rate, worn surface topography, worn surface element, and wear mechanism analysis. The results showed that the PVD CrAlN/(CrAlB)N/CrAlN coating could decrease the average friction coefficient and alloy wear rate compared to the uncoated WC/Co carbide couple. The apparent adhesive wear and abrasive wear of the Ti2AlNb alloy could be improved due to the PVD coating at evaluated temperatures. The PVD CrAlN/(CrAlB)N/CrAlN coating could be utilized to improve the antifriction properties of the Ti2AlNb alloy, which may be deposited on the cutting tool to improve the machining performance of Ti2AlNb alloys in future aerospace machining industry.

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