| 氧化锆增韧二硅化钼复合材料的压痕断裂韧性 |
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| 引用本文： | 马勤,阎秉钧,上官献邦, 杨延清,康沫狂. 氧化锆增韧二硅化钼复合材料的压痕断裂韧性[J]. 兰州理工大学学报, 1995, 0(4) |
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| 作者姓名： | 马勤 阎秉钧 上官献邦 杨延清 康沫狂 |
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| 作者单位： | 甘肃工业大学机械工程一系，西北工业大学 |
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| 摘 要： | 用不同的压痕方程计算了ＺｒＯ＿２增韧ＭｏＳｉ＿２复合材料的室温断裂韧性Ｋ＿（１ｃ）值，同时研究了压痕载荷对Ｋ＿（１ｃ）值的影响，结果表明，试验材料在试验条件下的断裂韧性不遵从半月状裂纹系统方程，而遵从巴氏裂纹系统方程，其室温压痕断裂韧性保持与压痕载荷的独立性。
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| 关 键 词： | 二硅化钼；二氧化锆；复合材料；直接压痕法；断裂韧性 |
Indentation Fracture Toughness of zrO_2-Toughened MoSi_2 Composites |
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| Ma Qin,Yan Bingjiun,Shanggua,Xianbang. Indentation Fracture Toughness of zrO_2-Toughened MoSi_2 Composites[J]. Journal of Lanzhou University of Technology, 1995, 0(4) |
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| Authors: | Ma Qin Yan Bingjiun Shanggua Xianbang |
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| Abstract: | The fracture toughness of ZrO_2-toughened MoSi_2 composites made by hotpress-ing was calculated by various indentation equations and the effects of indentation loads on K_(1c)value of the composite were also investigated. It was demonstrated that the K_(1c)values of thetest material obey palmquist crack system equations and the fracture toughness was indepen-dent of indentation load on the sample. The fracture toughness calculated by median cracksystem equations revealed a decreasing R curve , thus the median crack system equations can-not be used to oalculate the fracture toughness of the tested material. |
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| Keywords: | MoSi_2 ZrO_2 composite indentation method fracture toughness |
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