High-temperature strengths of aluminium composite reinforced with continuous SiC fibre
High-temperature strengths of aluminium composite reinforced with continuous SiC fibre
复制标题
DOI：
10.1007/bf00540309
复制
发表时间：
1981-11
影响因子：
4.5
通讯作者：
S. Yajima;K. Okamura;J. Tanaka;Tokuji Hayase
中科院分区：
文献类型：
--
作者：
S. Yajima;K. Okamura;J. Tanaka;Tokuji Hayase
采用液压法分别用体积分数为30%、35%、40%和50%的SiC纤维对铝合金进行单向增强。用于增强的SiC纤维由聚碳硅烷生产，并且是由500根长度为300 m、直径为13μm的连续长丝组成的“纱线”，具有2000 MPa的拉伸强度。在空气中从室温到500° C的温度范围内测试了复合材料的高温拉伸和弯曲强度。强度在400° C以下不受温度的影响，但在500° C时降低。这种降低被认为是由应力的传递效率降低伴随着纤维和基质之间的粘附力降低而引起的。
Aluminium alloys were reinforced unidirectionally with 30, 35, 40 and 50 vol %SiC fibres by a liquid-pressing method. The SiC fibres for reinforcement were produced from a polycarbosilane and were “yarns” consisting of 500 continuous filaments of length 300 m and diameter 13μm, having a tensile strength of 2000 MPa. High-temperature tensile and bending strengths of the composites were examined in air in the temperature range from room temperature to 500° C. The strengths were not influenced by temperature up to 400° C, but were decreased at 500° C. The decrease is considered to be caused by the reduction in transfer efficiency of the stress accompanying the decrease in adhesion between fibres and matrix.