Abstract
Abstract
In developing a wire-arc plasma direct energy deposition process for creep-resistant alloys used in high-speed flight applications, structures were built from nickel-based superalloy Rene 41. Samples of additive manufacturing (AM) material were analysed for their microstructural and mechanical properties, in both as-deposited (AD) and heat-treated (HT) conditions. Tensile specimens were tested at room temperature, 538, 760, and 1000 °C. Macroscopically, large columnar grains made up of a typical dendritic structure were observed. Microscopically, significant segregation of heavier elements, grain boundary precipitates, and secondary phases were observed, with key differences observed in HT material. There was a clear distinction between failure modes at different testing temperatures and between AD and HT variants. A fractographic investigation found a progressive move from brittle to ductile fracture with increasing testing temperature in both AD and HT conditions, as well as microstructural features which support this observation.
Funder
Defence Science and Technology Laboratory
Publisher
Springer Science and Business Media LLC
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Software,Control and Systems Engineering
Reference28 articles.
1. Williams SW, Martina F, Addison AC, Ding J, Pardal G, Colegrove P (2016) Wire + arc additive manufacturing. Mater Sci Technol 32:641–647. https://doi.org/10.1179/1743284715Y.0000000073
2. Marinelli G, Martina F, Ganguly S, Williams S (2019) Development of Wire + arc additive manufacture for the production of large-scale unalloyed tungsten components. Int J Refract Met Hard Mater 82:329–335. https://doi.org/10.1016/j.ijrmhm.2019.05.009
3. Xu X, Ganguly S, Ding J, Seow CE, Williams S (2018) Enhancing mechanical properties of wire + arc additively manufactured INCONEL 718 superalloy through in-process thermomechanical processing. Mater Des 160:1042–1051. https://doi.org/10.1016/j.matdes.2018.10.038
4. James WS, Ganguly S, Pardal G (2022) Selection and performance of AM superalloys for high-speed flight environments. Int J Adv Manuf Technol 122:2319–2327. https://doi.org/10.1007/s00170-022-10005-9
5. Battelle Memorial Institute, Heat-resistant alloys, in: Met. Mater. Prop. Dev. Stand., Battelle Memorial Institute, 2017. https://app.knovel.com/hotlink/pdf/id:kt00CX2NX1/metallic-materials-properties/metallic-m-mechanical
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献