用于航空航天应用的激光定向能沉积铬镍铁合金 625 的高温摩擦学性能研究

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-11-12 DOI:10.1016/j.triboint.2024.110388

Amit K. Praharaj , Srikanth Bontha , Vamsi K. Balla , Sunil K. Chakrapani , P.S. Suvin

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引用次数: 0

摘要

激光定向能沉积（LDED）是一种用于制造基于超级合金的航空发动机部件的新兴技术。因此，目前的工作研究了 LDED 加工的 IN625 在室温（RT）和 850 °C 高温（HT）条件下的摩擦学性能，以模拟航空发动机部件的工作环境。与传统加工（CP）样品的比较结果表明，AD 样品的摩擦性能与 CP 样品相似，但磨损性能略有改善。由于形成了稳定的氧化层，AD 样品在高温下的 COF 和磨损率比在低温下明显降低。氧化物层中的主要物相为氧化镍、氧化铁和氧化铬。这项研究表明，LDED 适用于制造耐磨表面。

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Investigation on high-temperature tribological performance of laser directed energy deposited Inconel 625 for aerospace applications

Laser directed energy deposition (LDED) is an emerging technique for fabricating superalloy based aero engine components. Hence, the current work investigates the tribological performance of LDED processed IN625 at room temperature (RT) and high temperature (HT) conditions of 850 °C to replicate the operating environment of aero engine components. The comparison with conventionally processed (CP) sample confirmed that as-deposited (AD) sample showed similar friction behavior to the CP sample but slightly improved wear performance. The COF and wear rate of AD sample reduced significantly at HT compared to RT due to the evolution of stable oxide layer. NiO, Fe₂O₃, and Cr₂O₃ were the major phases in oxide layer. The work indicates suitability of LDED to fabricate wear resistant surfaces.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.