High-temperature high cycle fatigue performance of laser powder bed fusion fabricated Hastelloy X: Study into the microstructure and oxidation effects

Minghao Liu; Kai Zhang; Jianwen Liu; Jing Zhu; Jie Liu; Qingsheng He; Peter Hodgson; Ruifeng Zhang; Yuman Zhu; Aijun Huang

Materials & Design (Jul 2024)

High-temperature high cycle fatigue performance of laser powder bed fusion fabricated Hastelloy X: Study into the microstructure and oxidation effects

Minghao Liu,
Kai Zhang,
Jianwen Liu,
Jing Zhu,
Jie Liu,
Qingsheng He,
Peter Hodgson,
Ruifeng Zhang,
Yuman Zhu,
Aijun Huang

Affiliations

Minghao Liu: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
Kai Zhang: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; Monash Centre for Additive Manufacturing, Monash University, Notting Hill, VIC 3168, Australia; Corresponding author at: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
Jianwen Liu: Monash Centre for Additive Manufacturing, Monash University, Notting Hill, VIC 3168, Australia; Department of Material Science and Engineering, Monash University, Clayton, VIC 3800, Australia
Jing Zhu: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
Jie Liu: Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
Qingsheng He: School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
Peter Hodgson: Institute for Frontier Materials, Deakin University, Geelong, VIC 3217, Australia
Ruifeng Zhang: School of Materials Science and Engineering, Central South University, Changsha 410083, China
Yuman Zhu: Monash Centre for Additive Manufacturing, Monash University, Notting Hill, VIC 3168, Australia; Department of Material Science and Engineering, Monash University, Clayton, VIC 3800, Australia
Aijun Huang: Monash Centre for Additive Manufacturing, Monash University, Notting Hill, VIC 3168, Australia; Department of Material Science and Engineering, Monash University, Clayton, VIC 3800, Australia

Journal volume & issue: Vol. 243
p. 113037

Abstract

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High-temperature fatigue properties are critical for laser powder bed fusion (LPBF) fabricated Nickel-based superalloy Hastelloy-X (HX) used in aero engines. In this study, superior high-temperature high-cycle fatigue properties of LPBF HX were achieved. The detailed investigations show that the grain boundary oxidation promoted by the different deformation modes between neighboring grains, despite the reduced oxygen-related damage in the coarser LPBF HX microstructures, are the potential causes for the inter-granular fatigue crack initiation and the subsequent crack coalescence. In the meantime, the crack propagation could be hindered by the refined carbides and annealing twins with Σ3 misorientation (60°/〈111〉) in LPBF HX. Furthermore, the recrystallized grains formed ahead of the crack tip due to the severe deformation within the plastic zone and high testing temperature have different crystallographic orientations, which leads to the crack propagation path changes and increases the fatigue crack propagation resistance.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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