Overcoming strength-ductility trade-off in pelleted heterostructure titanium matrix composites by optimizing pellet size

doi:10.1016/j.matchar.2025.114803

IMR OpenIR

	Overcoming strength-ductility trade-off in pelleted heterostructure titanium matrix composites by optimizing pellet size
	Liu, Lei 1,2; Li, Shufeng 1; Li, Shaolong 1; Liu, Huiying 1; Wang, Shaodi 1; Hui, Dongxu 1; Zhang, Xin 1; Kariya, Shota 3; Umeda, Junko 3; Kondoh, Katsuyoshi 3; Bahador, Abdollah 4; Xiao, Bolv 2; Ma, Zongyi 2
通讯作者	Li, Shufeng(shufengli@xaut.edu.cn) ; Xiao, Bolv(blxiao@imr.ac.cn)
	2025-04-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	222 页码:12
摘要	Precisely controlling the spatial distribution of reinforcements and introducing heterogeneous grain structures are effective strategies for simultaneously enhancing the strength and ductility of titanium matrix composites (TMCs). However, achieving customized microstructure design in TMCs remains challenging. In this study, pelleted heterostructure Ti64-TiBw composites with varying pellet sizes (D50, D75, D150, and D250) were designed to systematically investigate the effect of pellet size on mechanical properties and deformation behavior. The results show that reducing pellet size significantly improves elongation, reaching a maximum of 11.5 %-an improvement of 219 % over homo-structure composites-without sacrificing strength. This improvement is attributed to increased matrix grain deformation at the crack tip in pelleted heterostructure Ti64TiBw composites with smaller pellet sizes, coupled with enhanced strain redistribution between coarse- and finegrained regions, which effectively inhibits crack propagation. This study offers a new pathway for precise microstructure design of TMCs, laying the foundation to overcome the strength-ductility trade-off and expand applications in high-performance metal matrix composites.
关键词	Powder metallurgy Titanium matrix composites (TMCs) Pelleted heterostructure Mechanical properties Fracture mechanism
资助者	National Key Research and Develop-ment Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Shaanxi Innovative Research Team for Key Science and Technology ; Xi'an University of Tech-nology Doctoral Dissertation Innovation Fund
DOI	10.1016/j.matchar.2025.114803
收录类别	SCI
语种	英语
资助项目	National Key Research and Develop-ment Program of China[2021YFB3701203] ; National Natural Science Foundation of China[52201165] ; National Natural Science Foundation of China[52471162] ; National Natural Science Foundation of China[52321001] ; National Natural Science Foundation of China[U2441261] ; National Natural Science Foundation of China[52322106] ; National Natural Science Foundation of China[52192595] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[52120105001] ; China Postdoctoral Science Foundation[2024M763340] ; Shaanxi Innovative Research Team for Key Science and Technology[2023-CX-TD-46] ; Xi'an University of Tech-nology Doctoral Dissertation Innovation Fund[310-252072101]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001424172700001
出版者	ELSEVIER SCIENCE INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180048
专题	中国科学院金属研究所
通讯作者	Li, Shufeng; Xiao, Bolv
作者单位	1.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Osaka Univ, Joining & Welding Res Inst, Osaka, Ibaraki 5670047, Japan 4.Mat Proc Inst, Eston Rd, Middlesbrough TS6 6US, England
推荐引用方式 GB/T 7714	Liu, Lei,Li, Shufeng,Li, Shaolong,et al. Overcoming strength-ductility trade-off in pelleted heterostructure titanium matrix composites by optimizing pellet size[J]. MATERIALS CHARACTERIZATION,2025,222:12.
APA	Liu, Lei.,Li, Shufeng.,Li, Shaolong.,Liu, Huiying.,Wang, Shaodi.,...&Ma, Zongyi.(2025).Overcoming strength-ductility trade-off in pelleted heterostructure titanium matrix composites by optimizing pellet size.MATERIALS CHARACTERIZATION,222,12.
MLA	Liu, Lei,et al."Overcoming strength-ductility trade-off in pelleted heterostructure titanium matrix composites by optimizing pellet size".MATERIALS CHARACTERIZATION 222(2025):12.