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李建康,杨延清,罗 贤,张荣军.SiC纤维增强钛基复合材料的横向力学性能[J].稀有金属材料与工程(英文),2009,38(3):426~430.[Li Jiankang,Yang Yanqing,Luo Xian,Zhang Rongjun.Transverse Mechanical Properties of Continuous SiC Fiber Reinforced Titanium Matrix Composites[J].Rare Metal Materials and Engineering,2009,38(3):426~430.]
Transverse Mechanical Properties of Continuous SiC Fiber Reinforced Titanium Matrix Composites
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Received:February 11, 2008  
DOI:
Key words: titanium matrix composites  transverse mechanical property  interface strength
Foundation item:国家自然科学基金(50371069)和航空科学基金(04G53044)资助
Author NameAffiliation
Li Jiankang Northwestern Polytechnical University, Xi’an 710072, China 
Yang Yanqing  
Luo Xian  
Zhang Rongjun  
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Abstract:
      Transverse mechanical properties of TMCs reinforced by two types of SiC fibers with and without C coating were determined by use of cross-shaped specimens. The initial nonlinear stress of the stress-strain curve under the applied transverse tensile load was adopted to calculate the interface strength. The interface strength with C coating was 53 MPa which was lower than 196 MPa of the one without C coating. The debonding position of two interface were different, i.e. the former was between the fiber and C coating, but the latter was between the matrix and reaction products. The initial nonlinearity stress of TMCs reinforced by multiple fibers with 30% volume fraction was lower than that of single fiber reinforced TMCs, which was caused by the decrease of residual stress on the surface of fiber, and the interface strength was not influenced by the more additional fibers