摘要
测定了Al_2O_3短纤维增强不同铝基复合材料的抗拉强度,利用SEM动态拉伸装置观察了复合材料的微观断裂过程,根据这些试验结果以及有限元计算结果对强度预测公式进行了修正。结果表明：目前普遍采用的强度预测公式,仅适用于断裂机理是纤维断裂型的复合材料,取向因子应为0．49。
The tensile strength of different Al2O3 （sf）/Al matrix composites was determined. The microscopical fracture procedure was observed using a dynamic tensile device in SEM. According to these experimental results and finite element method calculated result, strength predication formula was modified. The results of tests show that the prevalent strength predication formula can only be used in the composites whose fracture is caused by fiber fracture. The orientation factor should be 0. 49.
出处
《机械工程材料》
CAS
CSCD
北大核心
2006年第6期10-13,57,共5页
Materials For Mechanical Engineering
关键词
AL2O3短纤维
铝基复合材料
断裂过程
强度预测
Al2O3 short fiber
aluminum matrix composite
fracture procedure
strength predication
