Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties

doi:10.1016/j.jmst.2020.06.011

IMR OpenIR

	Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties
	Ding, Hao 1; Cui, Xiping 1; Gao, Naonao 1; Sun, Yuan 2; Zhang, Yuanyuan 1; Huang, Lujun 1; Geng, Lin 1
通讯作者	Cui, Xiping(cuixiping@hit.edu.cn) ; Sun, Yuan(yuansun@imr.ac.cn)
	2021-01-30
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	62 页码:221-233
摘要	The (TiB/Ti)-TiAl composites with a laminated structure composing of alternating TiB/Ti composite layers, alpha(2)-Ti3Al interfacial reaction layers of and gamma-TiAl layers were successfully prepared by spark plasma sintering of alternately stacked TiB2/Ti powder layers and TiAl powder layers. And the influence of thickness ratio of TiB2/Ti powder layers to TiAl powder layers on microstructure evolution and mechanical properties of the resulting (TiB/Ti)-TiAl laminated composites were investigated systemically. The results showed that the thickening of alpha(2)-Ti3Al layers which originated from the reaction of Ti and TiAl was significantly hindered by introducing TiB2 particles into starting Ti powders. As the thickness ratio of TiB2/Ti powder layers to TiAl powder layers increased, the bending fracture strength and fracture toughness at room temperature of the final (TiB/Ti)-TiAl laminated composites were remarkably improved, especially for the (TiB/Ti)-TiAl composites prepared by TiB2/Ti powder layers with thickness of 800 mu m and TiAl powder layers with thickness of 400 mu m, whose fracture toughness and bending strength were up to 51.2 MPa.m(1/2) and 1456 MPa, respectively, 293 % and 108 % higher than that of the monolithic TiAl alloys in the present work. This was attributed to the addition of high-performance network TiB/Ti composite layers. Moreover, it was noteworthy that the ultimate tensile strength at 700 degrees C of (TiB/Ti)-TiAl composites fabricated by 400 mu m thick TiB2/Ti powder layers and 400 mu m thick TiAl powder layers was as high as that at 550 degrees C of network TiB/Ti composites. This means the service temperature of (TiB/Ti)-TiAl laminated composites was likely raised by 150 degrees C, meanwhile a good combination of high strength and high toughness at ambient temperature could be maintained. Finally, the fracture mechanism of (TiB/Ti)-TiAl laminated composites was proposed. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Titanium aluminide matrix composites Laminated structure High temperature properties Strengthening-toughening
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jmst.2020.06.011
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971079] ; National Natural Science Foundation of China[51771064] ; National Natural Science Foundation of China[51401068]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000601221700022
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：59[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/321006/158814
专题	中国科学院金属研究所
通讯作者	Cui, Xiping; Sun, Yuan
作者单位	1.Harbin Inst Technol, Sch Mat Sci & Engn, POB 433, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Div Superalloys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ding, Hao,Cui, Xiping,Gao, Naonao,et al. Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,62:221-233.
APA	Ding, Hao.,Cui, Xiping.,Gao, Naonao.,Sun, Yuan.,Zhang, Yuanyuan.,...&Geng, Lin.(2021).Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,62,221-233.
MLA	Ding, Hao,et al."Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 62(2021):221-233.