摘要
对压痕法和单边切口梁法所测MoSi2 基复合材料的断裂韧性作了研究和分析 ,提出了压痕法测量MoSi2 基复合材料断裂韧性的计算修正式。结果表明 :单边切口梁法的测量结果随试样切口宽度的增加而增大 ,压痕法测量的结果随计算式和试验载荷的不同而异。
Vikers microhardness indentation and single edge notched beam specimen techniques were evaluated, and the modified equation was presented in the measurement of fracture toughness of molybdenum disilicide matrix composites. The fracture toughness value of tested material increased with the increasing of notch breadth in single edge notched beam technique, the results of Vikers indentation method had notable difference with using different equations and different applied loads. It was suggested that the above modified equation might be used to improve the accuracy of the evaluation value.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第5期810-814,共5页
The Chinese Journal of Nonferrous Metals
关键词
断裂韧性
压痕法
单边切口梁法
二硅化钼
复合材料
fracture toughness
indentation technique
single edge notched beam specimen technique
molybdenum disilicide
