Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing

doi:10.1016/j.matdes.2022.110731

	Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing
	Huang, Jiankang 2,3; Liu, Guangyin 2; Yu, Xiaoquan 2; Wu, Haosheng 2; Huang, Yanqin 2; Yu, Shurong 1; Fan, Ding 2
刊名	MATERIALS & DESIGN
	2022-06-01
卷号	218
关键词	Wire arc additive manufacturing Alternating current Functionally gradient material Electromagnetic stirring
ISSN号	0264-1275
DOI	10.1016/j.matdes.2022.110731
英文摘要	Using wire arc additive manufacturing (WAAM), an alternating current (AC)-assisted WAAM method was proposed to fabricate a Titanium alloy functionally gradient material. The AC was added at the Ti6Al4V filling wire to regulate the microstructure variation from bottom to top during the deposition process. In this study, scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) were used to analyze the microstructure change. Transmission electron microscopy (TEM) was used to study the micro-mechanism. The mechanical performance was tested by Vickers hardness and tensile experiments. Results were obtained for the microstructures of different deposition layers with gradient changes. The results showed that 13-lath accumulated around the dislocations, which were hindered by the 13 phase. Grain size and grain character distributions were remarkably different as the AC increased. The maximum hardness was 480 HV when the value of AC was 20 A, and the highest elongation of the deposited layer was 10.22% with a strength of 650.2 MPa when the AC value was 30 A. The effect of the magnetic field generated by the AC on the flow behavior of the molten pool, the gradual change in microstructure, and the solidification behavior of the molten pool are also discussed.(c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000806789100005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158648]
专题	材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Huang, Jiankang,Liu, Guangyin,Yu, Xiaoquan,et al. Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing[J]. MATERIALS & DESIGN,2022,218.
APA	Huang, Jiankang.,Liu, Guangyin.,Yu, Xiaoquan.,Wu, Haosheng.,Huang, Yanqin.,...&Fan, Ding.(2022).Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing.MATERIALS & DESIGN,218.
MLA	Huang, Jiankang,et al."Microstructure regulation of titanium alloy functionally gradient materials fabricated by alternating current assisted wire arc additive manufacturing".MATERIALS & DESIGN 218(2022).