Microstructure and Fatigue Properties of Ti-48Al Alloy Fabricated by the Twin-Wire Plasma Arc Additive Manufacturing

Zhang, Xi; Lu, Qinghua; Zhang, Peilei; Yu, Zhishui; Shen, Chen; Wang, Lin; Hua, Xueming

doi:10.1007/s11665-022-06847-9

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…The fatigue strength of TiAl alloy fabricated by twin‐wire‐based plasma arc additive manufacturing (TW‐PAAM) in the lower part shows poor fatigue properties compared to the upper part, mainly attributed to the effect of residual stress and the size of lamellar colonies. [ 235 ]…”

Section: Fatigue Performance Of Amed Metalsmentioning

confidence: 99%

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Review on Fatigue of Additive Manufactured Metallic Alloys: Microstructure, Performance, Enhancement, and Assessment Methods

Liu,

Yu,

Guo

et al. 2023

Advanced Materials

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Additive manufacturing (AM), which is a process of building objects in a layer‐upon‐layer fashion from designed models, has received unprecedented attention from research and industry because it offers outstanding merits of flexibility, customization, reduced buy‐to‐fly ratio, and cost‐effectiveness. However, the fatigue performance of safety‐critical industrial components fabricated by AM is still far below that obtained from conventional methods. This review discusses the microstructural heterogeneities, randomly dispersed defects, poor surface quality, and complex residual stress generated during the AM process that can negatively impact the fatigue performance of as‐printed parts. The difference in microstructural origin of fatigue failure between conventionally manufactured and printed metals is reviewed with particular attention to the effects of the trans‐scale microstructures on AM fatigue failure mechanisms. Various methods for mitigating the fatigue issue, including pre‐process, inter‐process and post‐process treatments, are illustrated. Empirical, semi‐empirical and microstructure‐sensitive models are presented to predict fatigue strength and lifetime. Summary and outlooks for future development of the fatigue performance of AM materials are provided.This article is protected by copyright. All rights reserved

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Section: Fatigue Performance Of Amed Metalsmentioning

confidence: 99%

“…d) Diagram of sampling location and dimensions of fatigue samples of Ti 48 Al produced by twin‐wire‐based plasma arc additive manufacturing (TW‐PAAM). [ 235 ] Reproduced with permission. Copyright 2022, Springer Nature.…”

Section: Fatigue Performance Of Amed Metalsmentioning

confidence: 99%