In situ observation of fracture in homogeneous and functionally graded 6061Al/SiCp composites

被引：9
|
作者：
Wu, Tong [1 ,2 ]
Hu, Yong [1 ,2 ]
Leng, Yuelun [1 ,2 ]
Zhang, Meng [1 ,2 ]
Naerkezha, Nuermuhanmode [1 ]
Wang, Maosen [3 ]
机构：
[1] Jilin Univ, Sch Mech & Aerosp Engn, Nanling Campus,5988,Renmin St, Changchun 130025, Peoples R China
[2] Jilin Univ, Minist Educ, Key Lab CNC Equipment Reliabil, Nanling Campus,5988,Renmin St, Changchun 130025, Peoples R China
[3] Jilin Univ, Sch Construct Engn, Chaoyang Campus,938 West Democracy St, Changchun 130012, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2022年 / 830卷
基金：
中国国家自然科学基金;
关键词：
Homogeneous composites; Functionally graded materials; Heat treatment; In situ observation; Fracture toughness; CRACK INITIATION STRESS; HEAT-TREATMENT; MECHANICAL-PROPERTIES; BEHAVIOR; TOUGHNESS; ALUMINUM;
D O I：
10.1016/j.msea.2021.142279
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present work, 6061Al/SiCp homogeneous composites and 6061Al/SiCp functionally graded materials were prepared by vacuum hot pressing sintering. Fracture behaviors of composites were studied through three-point bending tests and fracture toughness tests with in situ observation. Results show that SiC content in the composite has a great influence on bending strength and fracture toughness. Bending strength and fracture toughness of functionally graded materials are the results of the strength, plasticity, and interlayer synergy. The fracture mechanism of composites is the initiation and growth of microcracks. A large number of microcracks initiate in matrix of the crack tip region and connect with each other to make the main crack propagate.
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收藏
页数：13
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