Synthesis and mechanical properties of innovative (TiB/Ti)-Ti3Al micro-laminated composites

被引：41
作者：
Qin, Shaohua [1 ]
Cui, Xiping [1 ,2 ]
Tian, Zhe [1 ]
Geng, Lin [1 ]
Liu, Baoxi [3 ]
Zhang, Jie [1 ]
Chen, Junfeng [4 ,5 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, POB 433, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Astronaut, Harbin 150080, Peoples R China
[3] Hebei Univ Technol, Res Inst Energy Equipment Mat, Tianjin 300132, Peoples R China
[4] Fuzhou Univ, Sch Mat Sci & Engn, Fuzhou 350116, Peoples R China
[5] LSMRI, State Key Lab Marine Corros & Protect, Qingdao 266101, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 700卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Micro-laminated composites; Reactive annealing; Phase transitions; Ductility and toughness; TENSILE PROPERTIES; TI3AL; DEFORMATION; FRACTURE; ALLOYS; LAYER; DISLOCATIONS; BEHAVIOR; SHEETS; TI;
D O I：
10.1016/j.jallcom.2017.01.047
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
(TiBiTi)-Ti3Al micro-laminated composites have been successfully produced by reaction annealing using in-house fabricated TiB/Ti composite foils and commercial pure Al foils as starting materials. The resulting (TiB/Ti)-Ti3Al composites showed a unique microstructure which was comprised of alternating TiB/Ti composite layers and Ti3Al layers. Microstructure of (TiBiTi)-Ti3Al micro-laminated composites was characterized systematically by optical microscopy (OM) and scanning electron microscopy (SEM). Furthermore, formation mechanism of the novel micro-laminated structure was discussed. The (TiB/Ti)Ti3Al micro-laminated composites exhibited a desired combination of the enhanced tensile strength with the superior ductility as compared to monolithic Ti3Al. This could be likely attributed to the introduction of ductile TiB/Ti composite layers and the formation of unique micro-laminated structure. It is noteworthy that fracture toughness of the (TiBiTi)-Ti3Al micro-laminated composites had a sharp increase, 1.5 times higher than that of monolithic Ti3Al. (C) 2017 Elsevier B.V. All rights reserved.
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收藏
页码：122 / 129
页数：8
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