On conventional versus direct aging of laser-directed energy deposited Mg–6Gd–3Y–0.5Zr alloy

Autor:	Yiling Jiang, Haibo Tang, Zhuo Li, Yuanhang Gao, Zhe Xu, Huaming Wang
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Laser-directed energy deposition direct aging Mg–RE alloys precipitation Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Pp 1-7 (2024)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2024.2415897
Popis:	Mg–Gd–Y–Zr alloys, with high Gd and Y solubility, demonstrate significant application potential due to effective precipitation strengthening but face challenges from lengthy aging times. Hereby we fabricate a Mg–6Gd–3Y–0.5Zr alloy via laser-directed energy deposition (LDED) technique. Taking the advantages of fine microstructures and supersaturation resulting from rapid solidification, direct aging (T5) can be conducted. T5 achieves peak hardness and tensile strength comparable to conventional solution and aging treatment (T6) yet in half the aging time, attributed to pipe diffusion via dislocations induced by tension–compression cycles during LDED. This study advances efficient heat treatments for LDED-fabricated precipitation-strengthening alloys.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/3a4bbf327bf14583bf8a84776f832df8 Zobrazit plný text záznamu View record in DOAJ