Failure Mechanisms of Ti-Al3Ti Metal-Intermetallic Laminate Composites

被引：0
|
作者：
Yuan Meini [1 ,2 ]
Li Yao [1 ]
Li Lizhou [1 ]
Chen Hehe [1 ]
Huang Bin [2 ]
机构：
[1] North Univ China, Coll Mech & Elect Engn, Taiyuan 030051, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
ADVANCES IN MATERIALS PROCESSING | 2018年
关键词：
Metal-intermetallic laminate composites; Three points bending; Finite element method; High-speed impact; FRACTURE-BEHAVIOR; IMPACT; EVOLUTION; DAMAGE;
D O I：
10.1007/978-981-13-0107-0_87
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ti-Al3Ti Metal-Intermetallic Laminate (MIL) composites were fabricated by vacuum hot pressing. The failure mechanisms of Ti-Al3Ti MIL composites under the bending load and dynamic loading conditions were analyzed by three points bending test and finite element analysis respectively. The results indicated that the vertical crack existed in the as-deposited state Ti-Al3Ti MIL composites in the Al3Ti layers resulted by the thermal residual stress. The three points bending load-displacement curves of Ti-Al3Ti MIL composites embraced a long plateau region, indicating that Ti-Al3Ti MIL composites have excellent damage tolerance. Ti-Al3Ti MIL composites under high-speed impact was mostly under the tensile stress. In the high-speed impact period, the transverse, inclined, and vertical cracks which dramatically absorb the projectile kinetic energy formed in Al3Ti phase.
引用
收藏
页码：893 / 904
页数：12
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