Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy

doi:10.1016/j.jmst.2023.08.033

IMR OpenIR

	Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy
	Bi, Jiang 1; Wu, Liukun 1; Liu, Zeqi 1; Wang, Haixiang 1; Li, Shide 2; Wang, Ji 2; Yang, Zhuoyun 1; Lu, Nannan3 ; Chen, Xi 4; Starostenkov, Mikhail Dmitrievich 5; Dong, Guojiang 1
通讯作者	Lu, Nannan(nnlu@imr.ac.cn) ; Chen, Xi(chenxi_hit2016@163.com) ; Dong, Guojiang(dgj@ysu.edu.cn)
	2024-04-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	178 页码:59-69
摘要	In this work, selective laser melting (SLM) process is used to prepare the AlNi6TiZr alloy. By analyzing the printing quality and mechanical properties of the printed specimens with different process parameters, the SLM forming window of AlNi6TiZr is obtained. The relative density of the sample printed with 270 W-1100 mm/s (laser energy density: 82 J/mm3) reaches 99.7%, exhibiting excellent mechanical properties (yield strength (YS): 421.7 MPa; ultimate tensile strength (UTS): 480.4 MPa). After an aging treatment of 325 degrees C-12 h, the YS and UTS of the sample increased to 494 MPa and 550.7 MPa, respectively. Adding Ni, Ti, and Zr components promoted the generation of multi-phase precipitates in the Al alloy and improved the synergistic strengthening effect of multi-phases. The hard-shell structure (HSS) formed by the Al3Ni phase at the grain boundary significantly strengthened the grain boundary strength. The precipitated Al3(Ti, Zr) phases at the grain boundaries prevent grain growth and dislocation movement. The Al3Ni and Al3(Ti, Zr) phases have good thermal stability that can still maintain excellent enhancement effects at high temperature. AlNi6TiZr alloy has great application prospects in medium and high-temperature environments.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Selective laser melting Al6NiTiZr alloy Microstructure Mechanical properties Thermal stability Strengthening mechanism
资助者	Hebei Natural Science Foundation of China ; Special Project for Local Science and Technology Development Guided by the Central Government of Hebei Province
DOI	10.1016/j.jmst.2023.08.033
收录类别	SCI
语种	英语
资助项目	Hebei Natural Science Foundation of China[E2021203138] ; Special Project for Local Science and Technology Development Guided by the Central Government of Hebei Province[236Z1805G]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001113100500001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177103
专题	中国科学院金属研究所
通讯作者	Lu, Nannan; Chen, Xi; Dong, Guojiang
作者单位	1.Yanshan Univ, Key Lab Adv Forging & Stamping Technol & Sci, Minist Educ, Qinhuangdao 066004, Peoples R China 2.CIT Dicastal Co Ltd, Qinhuangdao 066004, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China 5.Altai State Tech Univ, Gen Phys Dept, Leninist 46, Barnaul 656099, Russia
推荐引用方式 GB/T 7714	Bi, Jiang,Wu, Liukun,Liu, Zeqi,et al. Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,178:59-69.
APA	Bi, Jiang.,Wu, Liukun.,Liu, Zeqi.,Wang, Haixiang.,Li, Shide.,...&Dong, Guojiang.(2024).Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,178,59-69.
MLA	Bi, Jiang,et al."Microstructure, mechanical properties and multiphase synergistic strengthening mechanisms of a novel laser additive manufactured AlNi6TiZr alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 178(2024):59-69.