Investigations on the tribological performance of Inconel-625 and Tungsten carbide tribo-pairs in dry sliding wear at elevated temperatures

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-03-13 DOI:10.1016/j.matlet.2025.138393

B. Amarendhar Rao , Manish Tak , R. Narasimha Rao , Ravi Bathe

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Abstract

This study investigates the tribological behavior of the IN625 superalloy at elevated temperatures. The wear and friction characteristics of IN625 disc samples paired with tungsten carbide (WC) balls were evaluated using a multi-function tribometer at room temperature (26 °C) and elevated temperatures 600 °C, 700 °C, and 800 °C. Field emission scanning electron microscopy equipped with energy-dispersive spectroscopy and optical profilometry were employed to analyze the wear mechanisms and quantify the wear rate. The results revealed a significant reduction in friction and wear at elevated temperatures, attributed to IN625 alloy softening at 600 °C and above. At temperatures of 800 °C, the formation of a continuous oxide layer further mitigated wear by acting as a protective wear barrier. The wear mechanism transitioned from fatigue and abrasion at room temperature to oxidation and adhesion-dominated behavior at elevated temperatures.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive