| Mo-Si-B三元系复合材料的制备及室温断裂韧性 |
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| 引用本文： | 刘丰收, 杨王玥, 张来启. Mo-Si-B三元系复合材料的制备及室温断裂韧性[J]. 工程科学学报, 2004, 26(1): 63-68. DOI: 10.13374/j.issn1001-053x.2004.01.018 |
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| 作者姓名： | 刘丰收 杨王玥 张来启 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083;北京科技大学新金属材料国家重点实验室,北京,100083 |
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| 摘 要： | 通过Mo,Si,B三种单质粉末原位合成热压的方法制备了成分为Mo-12Si-8.5B和Mo-28Si-8.5B的Mo-Si-B三元系复合材料.利用金相显微镜、金相偏光镜、X射线衍射技术、扫描电镜等对制备材料的组织进行了分析,研究了退火工艺对其组织的影响,测量了其室温断裂韧性,并对复合材料的增韧机制进行了初步的探讨.
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| 关 键 词： | 原位合成 热压 Mo-Si-B复合材料 室温断裂韧性 |
| 收稿时间： | 2003-06-12 |
Preparation and Room-Temperature Fracture Toughness of Mo-Si-B Ternary System Composites |
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| LIU Fengshou, YANG Wangyue, ZHANG Laiqi. Preparation and Room-Temperature Fracture Toughness of Mo-Si-B Ternary System Composites[J]. Chinese Journal of Engineering, 2004, 26(1): 63-68. DOI: 10.13374/j.issn1001-053x.2004.01.018 |
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| Authors: | LIU Fengshou YANG Wangyue ZHANG Laiqi |
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| Abstract: | The alloys containing Mo-12Si-8.5B and Mo-28Si-8.5B respectively were prepared by the in-situ synthesis reaction of the elemental powders of Mo, Si and B by hot-pressing. The microstructures and the annealing processing were investigated by optical microscopy, polariscopy, scanning election microscopy (SEM), and X-ray diSractometry (XRD). The fracture toughness of the alloys at room temperature were determined to be 7.7 and 4.1 MPa·m1/2 respectively. The mechanism for toughening at ambient temperature was discussed. |
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| Keywords: | in-situ synthesis hot-pressing Mo-Si-B composite room-temperature fracture toughness |
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