Effect of heat treatment on AlSi10Mg composite 3D printed energy absorption structures

Ping Xu; Weinian Guo; Liting Yang; Chengxing Yang

Alexandria Engineering Journal (Aug 2024)

Effect of heat treatment on AlSi10Mg composite 3D printed energy absorption structures

Ping Xu,
Weinian Guo,
Liting Yang,
Chengxing Yang

Affiliations

Ping Xu: The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China; Key Laboratory of Railway Industry of Aerodynamics, Central South University, Changsha 410075, China
Weinian Guo: The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China; Corresponding author at: The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha 410075, China.
Liting Yang: The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China
Chengxing Yang: The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China; National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China; Key Laboratory of Railway Industry of Aerodynamics, Central South University, Changsha 410075, China

Journal volume & issue: Vol. 101
pp. 267 – 281

Abstract

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To enhance the energy absorption characteristics of the energy-absorbing structure in metal alloy 3D printing, various heat treatment conditions were studied on the 3D printed hourglass multi-cellular energy-absorbing structure (HTMEAS). The results reveal that as the annealing temperature rises, the structural morphology of the α-Al+Si phase in AlSi10Mg alloy undergoes alterations, particularly when the annealing temperature remains below 300°C. After heat treatment, the HTMEAS can contract layer by layer along the gradient and undergo controllable and orderly deformation. The maximum energy absorption, displacement, and peak force reached 758 J, 30 mm, and 30 kN, respectively.These values represent a significant enhancement of 146.8 %, 157.8 %, and 50 % compared to those without heat treatment, showcasing commendable mechanical properties. This advancement establishes a solid theoretical framework and assurance for the future development and refinement of 3D printing energy-absorbing structures.

Published in Alexandria Engineering Journal

ISSN: 1110-0168 (Print); 2090-2670 (Online)
Publisher: Elsevier
Country of publisher: Egypt
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/alexandria-engineering-journal/

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