Degradation mechanism for high-temperature sliding wear in surface-modified In718 superalloy

Thirugnanasambantham, K. G.; Raju, Ramesh; Sankaramoorthy, T.; Velmurugan, P.; Kannagi, A.; Reddy, M. Chaitanya; Chary, Vemana; Mustafa, Mustafa Abbas; Chandra, Vaibhav

doi:10.1080/23311916.2018.1501864

Cited by 20 publications

(1 citation statement)

References 24 publications

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“…Such structural assembly enables accommodation of the interfacial stresses [10], which is considered to be the major plasticity activator that renders desirable ductility when exposed to harsh temperatures. However, the tribological capability of this oxide layer is further associated with the reduction of the mechanical strengths of materials at elevated temperatures [11], variations in surface conditions and adhesion due to oxidation and diffusion [12], phase change, and composition change [13], which inherently depends on the temperature.…”

Section: Introductionmentioning

confidence: 99%

Temperature-mediated tribological characteristics of 40CrNiMoA steel and Inconel 718 alloy during sliding against Si3N4 counterparts

Bai

Wan

et al. 2020

Friction

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A comparative evaluation of the friction and wear behaviors of 40CrNiMoA steel and Inconel 718 alloy sliding against Si3N4 counterparts was conducted over a large temperature range from room temperature (RT) to 800 °C. The temperature-dependent tribological properties associated with the resulting chemical mitigation and structural adaptation of the solid sliding surface were clarified by surface/interface characterizations. The results revealed desirable performance in reducing friction and wear at elevated temperatures, which was associated with the resulting oxide composite film’s adaptive lubricating capability, whereas severe abrasive wear occurred at room/ambient temperatures. The oxidative-abrasive differentials for the two alloys were further discussed by considering the combined effect of temperature and stressed-shearing conditions.

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