| 高温静疲劳法预制耐火材料断裂韧性试件原生裂纹 |
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| 引用本文： | 徐恩霞,张恒,钟香崇.高温静疲劳法预制耐火材料断裂韧性试件原生裂纹[J].材料导报,2007,21(2):154-156. |
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| 作者姓名： | 徐恩霞 张恒 钟香崇 |
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| 作者单位： | 1. 郑州大学高温功能材料河南省重点实验室,郑州,450052
2. 郑州大学机电学院,郑州,450052 |
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| 摘 要： | 提出了一种预制耐火材料断裂韧性测试试件原生裂纹的新方法--高温静态疲劳法.其要点是把含切口的脆性耐火材料试件加热到其塑性变形温度范围,然后施加适当静载荷或交变载荷使其产生原生裂纹.研究了温度和应力对裂纹产生和扩展的影响.
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| 关 键 词： | 耐火材料 断裂韧性 预制裂纹 测试方法 |
Prefabricating Original Cracks in Refractory Specimens for Fracture Toughness Test Using High Temperature Static Fatigue Method |
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| XU Enxia,ZHANG Heng,ZHONG Xiangchong.Prefabricating Original Cracks in Refractory Specimens for Fracture Toughness Test Using High Temperature Static Fatigue Method[J].Materials Review,2007,21(2):154-156. |
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| Authors: | XU Enxia ZHANG Heng ZHONG Xiangchong |
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| Affiliation: | 1 Key Laboratory of High Temperature Cermics Institute,Province Henan,Zhengzhou 450052; 2 College of Mechanics, Zhengzhou University, Zhengzhou 450052 |
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| Abstract: | A new method of prefabricating original cracks in refractory material specimens for fracture toughness test using high temperature static fatigue technique is presented in this paper. It is important to heat the refractory specimen to the plastic eformation temperature, then to put a suitable static or dynamics stress to form original cracks. The effects of temperature and stress on the initiation and propagation of cracks are investigated. |
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| Keywords: | refractory material fracture toughness prefabricating cracks testing method |
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