Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts

Anders   Rygg Johnsen; Jan Erik Petersen; Mikkel Melters Pedersen; Halid Can Yildirim

doi:10.1007/s40194-023-01604-5

Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts

Anders Rygg Johnsen, Jan Erik Petersen, Mikkel Melters Pedersen, Halid Can Yildirim^*

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

4 Citations (Scopus)

Abstract

Additively manufactured Ti-6Al-4V parts may show better mechanical properties than those of cast and wrought materials. However there are significant uncertainties on the fatigue properties. In this study, a detailed analysis of Ti-6Al-4V parts was reviewed. A correlation on fatigue properties was observed based on microstructure, surface and internal quality. This relation was formulated in a developed model called MIS (Microstructure, Internal, Surface) that describes the domain of the AM part failing based on surface and internal quality. To assess the fatigue strength, correction factors are determined for two SN-curves within the limits provided.

Original language	English
Journal	Welding in the World
Volume	68
Issue	2
Pages (from-to)	361-409
Number of pages	49
ISSN	0043-2288
DOIs	https://doi.org/10.1007/s40194-023-01604-5
Publication status	Published - Feb 2024

Keywords

Additive manufacturing
Fatigue strength
SN curves
Titanium alloys

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10.1007/s40194-023-01604-5Licence: CC BY

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title = "Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts",

abstract = "Additively manufactured Ti-6Al-4V parts may show better mechanical properties than those of cast and wrought materials. However there are significant uncertainties on the fatigue properties. In this study, a detailed analysis of Ti-6Al-4V parts was reviewed. A correlation on fatigue properties was observed based on microstructure, surface and internal quality. This relation was formulated in a developed model called MIS (Microstructure, Internal, Surface) that describes the domain of the AM part failing based on surface and internal quality. To assess the fatigue strength, correction factors are determined for two SN-curves within the limits provided.",

keywords = "Additive manufacturing, Fatigue strength, SN curves, Titanium alloys",

author = "{Rygg Johnsen}, Anders and Petersen, {Jan Erik} and Pedersen, {Mikkel Melters} and Yildirim, {Halid Can}",

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Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts. / Rygg Johnsen, Anders ; Petersen, Jan Erik; Pedersen, Mikkel Melters et al.
In: Welding in the World, Vol. 68, No. 2, 02.2024, p. 361-409.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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T1 - Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts

AU - Rygg Johnsen, Anders

AU - Petersen, Jan Erik

AU - Pedersen, Mikkel Melters

AU - Yildirim, Halid Can

PY - 2024/2

Y1 - 2024/2

N2 - Additively manufactured Ti-6Al-4V parts may show better mechanical properties than those of cast and wrought materials. However there are significant uncertainties on the fatigue properties. In this study, a detailed analysis of Ti-6Al-4V parts was reviewed. A correlation on fatigue properties was observed based on microstructure, surface and internal quality. This relation was formulated in a developed model called MIS (Microstructure, Internal, Surface) that describes the domain of the AM part failing based on surface and internal quality. To assess the fatigue strength, correction factors are determined for two SN-curves within the limits provided.

AB - Additively manufactured Ti-6Al-4V parts may show better mechanical properties than those of cast and wrought materials. However there are significant uncertainties on the fatigue properties. In this study, a detailed analysis of Ti-6Al-4V parts was reviewed. A correlation on fatigue properties was observed based on microstructure, surface and internal quality. This relation was formulated in a developed model called MIS (Microstructure, Internal, Surface) that describes the domain of the AM part failing based on surface and internal quality. To assess the fatigue strength, correction factors are determined for two SN-curves within the limits provided.

KW - Additive manufacturing

KW - Fatigue strength

KW - SN curves

KW - Titanium alloys

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JO - Welding in the World

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Factors affecting the fatigue strength of additively manufactured Ti-6Al-4V parts

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