Fracture behaviors and mechanism of 2D C/SiC-BCx composite under tensile load

被引:31
|
作者
Zhang, Weihua [1 ]
Cheng, Laifei [1 ]
Liu, Yongsheng [1 ,2 ]
Zhang, Litong [1 ]
Yang, Wenbin [1 ]
Zhou, Shengtian [2 ]
机构
[1] NW Polytech Univ, Natl Key Lab Thermostruct Composite Mat, Xian 710072, Peoples R China
[2] Shenyang Aeroengine Res Inst, Shenyang 110015, Liaoning, Peoples R China
关键词
Composites; Mechanical properties; Carbides; Engine components; CERAMIC-MATRIX COMPOSITES; SICF-SIBC COMPOSITES; SELF-SEALING MATRIX; OXIDATION BEHAVIOR; MICROSTRUCTURE; ENVIRONMENTS; RESISTANCE; FIBERS; CMCS;
D O I
10.1016/j.msea.2011.09.089
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Tensile fracture behaviors and mechanisms of 2D C/SiC-BCx composite were investigated. Results showed that the 2D C/SiC-BCx composite exhibited similar tensile strength (about 250 MPa), but different fracture mode and damage evolution compared to that of 2D CNC composite under similar monotonic tensile stress condition at room temperature. The initial modulus and fracture modulus of 20 C/SiC-BCx composite obtained under tensile cyclic loading at RT were about 98.6 GPa and 54.5 GPa, respectively. At high temperatures, the tensile strengths were lower than that at room temperature and behaved as a step-like stress-strain curve. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:297 / 303
页数:7
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