| 加载速率对低合金钢缺口断裂行为的影响 |
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| 引用本文： | 任学冲,田建军,王国珍,褚武扬. 加载速率对低合金钢缺口断裂行为的影响[J]. 北京科技大学学报, 2004, 26(5): 533-537 |
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| 作者姓名： | 任学冲 田建军 王国珍 褚武扬 |
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| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083
2. 兰州理工大学材料科学与工程学院,兰州,730050;甘肃省有色金属新材料国家重点实验室,兰州,730050 |
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| 摘 要： | 通过对低合金钢(FCW-62)在-100℃1～500mm/min不同加载速率下缺口试样四点弯曲实验及断裂应的测量,研究了加载速率对低合金钢缺口试样断裂行为的影响.结果表明:加载速率较低时,断裂应力较高;加载速率较高时,断裂应力较低.断裂应力的变化是由断裂的临界事件随加载速率的变化引起的,并且当临界事件相同时断裂应力不随加载速率变化.当加载速率在30mm/min左右时,缺口韧性随加载速率的增加迅速下降,这是由于断裂应力在此时发生了突然改变.
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| 关 键 词： | 解理断裂 断裂应力 加载速率 缺口韧性 低合金钢 加载速率 低合金钢 断裂行为 影响 Low Alloy Steel Fracture Behavior Loading Rate 发生 缺口韧性 速率变化 临界事件 断裂应力 结果 研究 测量 弯曲实验 缺口试样 |
| 修稿时间： | 2003-11-17 |
Influence of Loading Rate on Fracture Behavior of Notched Specimens Made of Low Alloy Steel |
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| REN Xuechong,TIAN Jianjun,WANG Guozhen,CHU WuyangMaterials Science and Engineering School,University of Science and Technology Beijing,Beijing ,ChinaMaterial Science and Engineering School,Lanzhuo University of Science and Technology,Lanzhou ,ChinaState key Laboratory of Gansu New Non-ferrous Metal Material,Lanzhou ,China. Influence of Loading Rate on Fracture Behavior of Notched Specimens Made of Low Alloy Steel[J]. Journal of University of Science and Technology Beijing, 2004, 26(5): 533-537 |
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| Authors: | REN Xuechong TIAN Jianjun WANG Guozhen CHU WuyangMaterials Science Engineering School University of Science Technology Beijing Beijing ChinaMaterial Science Engineering School Lanzhuo University of Science Technology Lanzhou ChinaState key Laboratory of Gansu New Non-ferrous Metal Material Lanzhou China |
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| Affiliation: | REN Xuechong,TIAN Jianjun,WANG Guozhen,CHU WuyangMaterials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083,ChinaMaterial Science and Engineering School,Lanzhuo University of Science and Technology,Lanzhou 730050,ChinaState key Laboratory of Gansu New Non-ferrous Metal Material,Lanzhou 730050,China |
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| Abstract: | |
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| Keywords: | cleavage fracture fracture stress loading speed notch toughness Low-alloy steel |
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