A survey of fatigue properties from wrought and additively manufactured Ti-6Al-4V

Jeremy H. Rao; Nikki Stanford

doi:10.1016/j.matlet.2020.128800

A survey of fatigue properties from wrought and additively manufactured Ti-6Al-4V

Jeremy H. Rao
, Nikki Stanford

Materials Science & Engineering

Research output: Contribution to journal › Article › Research › peer-review

31 Citations (Scopus)

Abstract

A survey of fatigue data for Ti-6Al-4V is presented, a collation of several hundred data points. When tested in fully reversed loading, wrought and additively manufactured (AM) materials show similar behaviours until ~10⁵ cycles, after which the AM specimens show noticeably poorer fatigue strengths than wrought materials. Under high cycle conditions the AM materials show noticeably reduced fatigue strengths, and this has been attributed to the increase in crack initiation of AM materials. Under tension-tension loading conditions a large scatter in fatigue lifetime was obtained, with lamellar structures showing significantly depressed fatigue strengths compared to globular structures. No difference in behaviour between wrought and AM could be seen in this case.

Original language	English
Article number	128800
Number of pages	5
Journal	Materials Letters
Volume	283
DOIs	https://doi.org/10.1016/j.matlet.2020.128800
Publication status	Published - 15 Jan 2021

Keywords

Additive manufacturing
Fatigue

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10.1016/j.matlet.2020.128800

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abstract = "A survey of fatigue data for Ti-6Al-4V is presented, a collation of several hundred data points. When tested in fully reversed loading, wrought and additively manufactured (AM) materials show similar behaviours until \textasciitilde{}105 cycles, after which the AM specimens show noticeably poorer fatigue strengths than wrought materials. Under high cycle conditions the AM materials show noticeably reduced fatigue strengths, and this has been attributed to the increase in crack initiation of AM materials. Under tension-tension loading conditions a large scatter in fatigue lifetime was obtained, with lamellar structures showing significantly depressed fatigue strengths compared to globular structures. No difference in behaviour between wrought and AM could be seen in this case.",

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AU - Stanford, Nikki

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N2 - A survey of fatigue data for Ti-6Al-4V is presented, a collation of several hundred data points. When tested in fully reversed loading, wrought and additively manufactured (AM) materials show similar behaviours until ~105 cycles, after which the AM specimens show noticeably poorer fatigue strengths than wrought materials. Under high cycle conditions the AM materials show noticeably reduced fatigue strengths, and this has been attributed to the increase in crack initiation of AM materials. Under tension-tension loading conditions a large scatter in fatigue lifetime was obtained, with lamellar structures showing significantly depressed fatigue strengths compared to globular structures. No difference in behaviour between wrought and AM could be seen in this case.

AB - A survey of fatigue data for Ti-6Al-4V is presented, a collation of several hundred data points. When tested in fully reversed loading, wrought and additively manufactured (AM) materials show similar behaviours until ~105 cycles, after which the AM specimens show noticeably poorer fatigue strengths than wrought materials. Under high cycle conditions the AM materials show noticeably reduced fatigue strengths, and this has been attributed to the increase in crack initiation of AM materials. Under tension-tension loading conditions a large scatter in fatigue lifetime was obtained, with lamellar structures showing significantly depressed fatigue strengths compared to globular structures. No difference in behaviour between wrought and AM could be seen in this case.

KW - Additive manufacturing

KW - Fatigue

UR - https://www.scopus.com/pages/publications/85092494553

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DO - 10.1016/j.matlet.2020.128800

M3 - Article

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VL - 283

JO - Materials Letters

JF - Materials Letters

M1 - 128800

ER -

A survey of fatigue properties from wrought and additively manufactured Ti-6Al-4V

Abstract

Keywords

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