Bimodal laminated Ti3Al matrix composite achieved by in situ formed Ti5Si3 reinforcements

被引：18
作者：
Zhang, Tongtong [1 ]
Fan, Guohua [1 ]
Miao, Kesong [1 ]
Chen, Kai [2 ]
Pan, Zhihao [2 ]
Chen, Shuai [1 ]
Cui, Xiping [1 ]
Huang, Meng [1 ]
Geng, Lin [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Ctr Adv Mat Performance Nanoscale CAMP Nano, Xian 710049, Shaanxi, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 707卷
基金：
中国国家自然科学基金;
关键词：
Intermetallics; Microstructure; Phase transformation; Mechanical properties; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; TENSILE DUCTILITY; HIGH-STRENGTH; ALLOYS; PHASE; MICROSTRUCTURE; TEMPERATURES; DEFORMATION; PRECIPITATION;
D O I：
10.1016/j.msea.2017.09.074
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The low density and high-temperature mechanical properties of intermetallic Ti3Al based alloys are highly desirable for a wide range of critical applications. In this paper, we designed and prepared a novel laminated Ti5Si3/Ti3Al composite (LTTC) consisting of alternating Ti5Si3-lean/coarse-grained Ti3Al layers (TCLs) and Ti5Si3-rich/fine-grained Ti3Al layers (TFLs). The processing route involves hot pressing of a stack of alternating Ti foils and Al-6Si foils, followed by a two-step reaction annealing. The tensile properties of the LTTC have also been evaluated, and the LTTC exhibited a good strength-ductility combination when compared with monolithic Ti3Al. By in-depth mechanism discussion, we propose the possible approaches to further enhance the mechanical properties of such LTTC.
引用
收藏
页码：419 / 425
页数：7
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