The aim of this research was to study the tribological behaviour of Ti–48Al–2Nb–2Cr alloy under dry sliding reciprocating conditions. A reciprocating wear machine was employed to evaluate the typical abrasion resistance of the alloy. Infrastructure assessment of worn surfaces was performed by scanning electron microscopy (SEM) analysis equipped with Energy Dispersive X-Ray Spectroscopy (EDS). The average surface roughness of initial specimen was 32 nm. According to the SEM observations of worn surfaces and debris, the dominant wear mechanism under defined tribosystem was identified to be abrasive and delamination wear. The weight loss measurements showed that by increasing the applied load from 10 to 40 N, the weight loss was significantly increased from 5.4 to 18.5 µg after passing 1000 m slip distance.
BonacchiD, RizziG, BardiU, . Chemical stripping of ceramic films of titanium aluminum nitride from hard metal substrates. Surf Coat Technol. 2003;165:35–39.
3.
MoserM, MayrhoferPH, ClemensH.On the influence of coating and oxidation on the mechanical properties of a γ-TiAl based alloy. Intermetallics. 2008;16:1206–1211.
4.
LapinJ.TiAl based alloys: present status and future perspectives. Metal. 2009;5:19–21.
5.
LiXJ, ChengGA, XueWB, . Wear and corrosion resistant coatings formed by microarc oxidation on TiAl alloy. Mater Chem Phys. 2008;107:148–152.
6.
MiyoshiK, LerchBA, DraperSL.Fretting wear of Ti-48Al-2Cr-2Nb. Tribol Int. 2003;36:145–153.
7.
YuLD, ThongtemS, VilaithongT.Modification of tribology and high-temperature behavior of Ti-47Al intermetallic alloy nitrided by N ion implantation. Surf Coat Thechnol. 2000;128:410–417.
8.
LiuX, TianW, XuW, . Wear resistance of TiAl intermetallics by plasma alloying and plasma carburization. Surf Coat Technol. 2007;201:5278–5281.
9.
RastkarAR, BloyceA, BellT.Sliding wear behaviour of two gamma-based titanium aluminides. Wear. 2000;240:19–26.
10.
YoneyamaT, DoiH, KobayashiE, . Deformation property of titanium and dental alloys in an indentation test. Dent Jpn. 1997;33:92–96.
11.
KarimiH, GhasemiA, HadiM.Microstructure and oxidation behaviour of TiAl(Nb)/Ti2AlC composites fabricated by mechanical alloying and hot pressing. Bull Mater Sci. 2016;39:1263–1272.
12.
HuangS, TsaiW, PanY, . Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air. Metals. 2019;9:1–16.
13.
BiaminoS, PennaA, AckelidU, . Electron beam melting of Ti-48Al-2Cr-2Nb alloy: microstructure and mechanical properties investigation. Intermetallics. 2011;19:776–781.
14.
Card No. 05-0678 International JCPDS–International Centre for Diffraction Data 1998.
15.
HolmbergK, MatthewsA.Coating tribology. 2nd ed. Sheffield (UK): University of Sheffield; 1994.
16.
SealS, KaleA, SundaramKB, . Oxidation and chemical state analysis of polycrystalline magnetron sputtered (Ti,Al)N films at ambient and liquid N2 temperatures. J Vac Sci Technol A.2000;18:1571–1578.
17.
KimYW.Effects of microstructure on the deformation and fracture of γ-TiAl alloys. Mater Sci Eng A. 1995;192–193:519–533.
18.
TillmannW, VogliE, MomeniS.Mechanical and tribological properties of Ti/TiAlN duplex coatings on high and low alloy tool steels. Vacuum. 2009;84:387–392.
19.
CourbonC, FallqvistM, HardellJ, . Adhesion tendency of PVD TiAlN coatings at elevated temperatures during reciprocating sliding against carbon steel. Wear. 2015;330–331:209–222.
20.
SuhNP.An overview of the delamination theory of wear. Wear. 1977;44:1–16.
21.
JahanmirS, SuhNP, AbrahamsonEPII. The delamination theory of wear and the wear of a composite surface. Wear. 1975;32:33–49.
22.
ZahmatkeshB, EnayatiMH, KarimzadehF.Tribological and microstructural evaluation of friction stir processed Al2024 alloy. Mater Des. 2010;31:4891–4896.
23.
RanaH, BadhekaV.Influence of friction stir processing conditions on the manufacturing of Al-Mg-Zn-Cu alloy/boron carbide surface composite. J Mater Process Technol. 2018;255:795–807.
24.
RabinowiczE.Friction and wear of materials. New York: Wiley; 1965.
25.
KaurS, GhadirinejadK, OskoueiRH.An overview on the tribological performance of titanium alloys with surface modifications for biomedical applications. Lubricants. 2019;7:65.
26.
AlamM, HaseebA.Response of Ti-6Al-4V and Ti-24Al-11Nb alloys to dry sliding wear against hardened steel. Tribol Int. 2002;35:357–362.
