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An overview of very high cycle fatigue behavior of additively manufactured Ti-6Al-4V
Frye, Palmer Simsiriwong, Jutima
Frye, Palmer
Simsiriwong, Jutima
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2019-06
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Aerospace industry,Additive manufacturing,Mechanical properties,Titanium base alloys,Failure,Cooling,Defects,Net shape,Residual stress,Lasers,Titanium,High cycle fatigue,Metal fatigue,Computer aided design--CAD,Jet engines,Crack initiation,Turbine blades,Tooling,Fatigue failure,Microstructure,Production methods,Gas turbine engines
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Frye, P., & Simsiriwong, J. (2019). An overview of very high cycle fatigue behavior of additively manufactured ti-6Al-4V. Journal of Management & Engineering Integration, 12(1), 25-34. https://doi.org/10.62704/10057/24248
Abstract
This paper presents a brief review on the current state of knowledge of the very high cycle fatigue (VHCF) behavior of metallic parts fabricated using Additive Manufacturing (AM) processes. It has been shown that AM has significant potential to replace traditional manufacturing methods that impose geometric limitations to designs. Powder-based metallic AM methods allow for precise layer-wise processing of complex net-shape parts without the use of special tooling or molds. Among various metals commonly used in AM processes, titanium (Ti) 6Al-4V alloy is currently of great interest especially in aerospace applications that contain parts with complex geometries (i.e., turbine blades in jet engines). To safely adapt AM Ti-6Al-4V parts in these applications, their mechanical properties and fatigue behavior must be understood. Various studies have identified AM process-induced defects (i.e., entrapped gas pores, lack of fusion defects between build layers, etc.) to be the main cause of fatigue failure of AM Ti-6Al-4V parts. However, there are limited studies relating to the effects of these defects on the behavior of AM metals in the VHCF regime (beyond 107 cycles). Knowledge of the VHCF behavior of AM Ti-6Al-4V is needed for the aforementioned applications due to the high loading frequencies and long service lives required for these parts.
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Published in SOAR: Shocker Open Access Repository by Wichita State University Libraries Technical Services, November 2022.
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Association for Industry, Engineering and Management Systems (AIEMS)
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Journal of Management & Engineering Integration
v.12 no.1
v.12 no.1
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1939-7984