Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition

Kai Zhang; Ying Liu; Xinni Tian; Yi Yang; Yuman Zhu; Michael Bermingham; Aijun Huang

doi:10.1016/j.ijfatigue.2022.107454

Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition

Kai Zhang, Ying Liu, Xinni Tian, Yi Yang, Yuman Zhu, Michael Bermingham, Aijun Huang

Materials Science & Engineering

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

11 Citations (Scopus)

Abstract

Boron is a powerful grain solute that promotes substantial microstructural refinement in titanium alloys produced by additive manufacturing. However, the fatigue performance of boron refined additive manufactured titanium alloys remained unknown. In this study, a thorough investigation into the high-cycle fatigue life and crack propagation rates of laser direct energy deposited Ti-6Al-4V with a trace boron addition was carried out. The high-cycle fatigue life was significantly improved, as the refined microstructure increased the crack initiation resistance. However, the crack propagation resistance estimated from spectrum loading was reduced, due to the refined prior-β grains and TiB particles.

Original language	English
Article number	107454
Number of pages	13
Journal	International Journal of Fatigue
Volume	168
DOIs	https://doi.org/10.1016/j.ijfatigue.2022.107454
Publication status	Published - Mar 2023

Keywords

Fatigue properties
Laser direct energy deposition
Microstructure characterization
Titanium alloys

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10.1016/j.ijfatigue.2022.107454

Cite this

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title = "Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition",

abstract = "Boron is a powerful grain solute that promotes substantial microstructural refinement in titanium alloys produced by additive manufacturing. However, the fatigue performance of boron refined additive manufactured titanium alloys remained unknown. In this study, a thorough investigation into the high-cycle fatigue life and crack propagation rates of laser direct energy deposited Ti-6Al-4V with a trace boron addition was carried out. The high-cycle fatigue life was significantly improved, as the refined microstructure increased the crack initiation resistance. However, the crack propagation resistance estimated from spectrum loading was reduced, due to the refined prior-β grains and TiB particles.",

keywords = "Fatigue properties, Laser direct energy deposition, Microstructure characterization, Titanium alloys",

author = "Kai Zhang and Ying Liu and Xinni Tian and Yi Yang and Yuman Zhu and Michael Bermingham and Aijun Huang",

note = "Funding Information: The final supports from Sailing Program ( 20YF1431600 ) and internal funding of University of Shanghai for Science and Technology are greatly appreciated. The authors acknowledge the use of the instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australian. The authors also appreciate the access to the facilities provided by Advanced Materials Research Institute, Yangtze Delta Analytical Characterization Platform. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2023",

month = mar,

doi = "10.1016/j.ijfatigue.2022.107454",

language = "English",

volume = "168",

journal = "International Journal of Fatigue",

issn = "0142-1123",

publisher = "Elsevier",

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TY - JOUR

T1 - Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition

AU - Zhang, Kai

AU - Liu, Ying

AU - Tian, Xinni

AU - Yang, Yi

AU - Zhu, Yuman

AU - Bermingham, Michael

AU - Huang, Aijun

N1 - Funding Information: The final supports from Sailing Program ( 20YF1431600 ) and internal funding of University of Shanghai for Science and Technology are greatly appreciated. The authors acknowledge the use of the instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a Node of Microscopy Australian. The authors also appreciate the access to the facilities provided by Advanced Materials Research Institute, Yangtze Delta Analytical Characterization Platform. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2023/3

Y1 - 2023/3

N2 - Boron is a powerful grain solute that promotes substantial microstructural refinement in titanium alloys produced by additive manufacturing. However, the fatigue performance of boron refined additive manufactured titanium alloys remained unknown. In this study, a thorough investigation into the high-cycle fatigue life and crack propagation rates of laser direct energy deposited Ti-6Al-4V with a trace boron addition was carried out. The high-cycle fatigue life was significantly improved, as the refined microstructure increased the crack initiation resistance. However, the crack propagation resistance estimated from spectrum loading was reduced, due to the refined prior-β grains and TiB particles.

AB - Boron is a powerful grain solute that promotes substantial microstructural refinement in titanium alloys produced by additive manufacturing. However, the fatigue performance of boron refined additive manufactured titanium alloys remained unknown. In this study, a thorough investigation into the high-cycle fatigue life and crack propagation rates of laser direct energy deposited Ti-6Al-4V with a trace boron addition was carried out. The high-cycle fatigue life was significantly improved, as the refined microstructure increased the crack initiation resistance. However, the crack propagation resistance estimated from spectrum loading was reduced, due to the refined prior-β grains and TiB particles.

KW - Fatigue properties

KW - Laser direct energy deposition

KW - Microstructure characterization

KW - Titanium alloys

UR - http://www.scopus.com/inward/record.url?scp=85145657847&partnerID=8YFLogxK

U2 - 10.1016/j.ijfatigue.2022.107454

DO - 10.1016/j.ijfatigue.2022.107454

M3 - Article

AN - SCOPUS:85145657847

SN - 0142-1123

VL - 168

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 107454

ER -

Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition

Abstract

Keywords

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Centre for Additive Manufacturing (MCAM)

Centre for Electron Microscopy (MCEM)

Cite this

Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition

Abstract

Keywords

Access to Document

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Centre for Additive Manufacturing (MCAM)

Centre for Electron Microscopy (MCEM)

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