| 核用一回路部件断裂分析 |
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| 引用本文： | 苗中辉,焦增庚.核用一回路部件断裂分析[J].金属热处理,2007,32(8):98-100. |
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| 作者姓名： | 苗中辉 焦增庚 |
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| 作者单位： | 海军工程大学,核能科学与工程系,湖北,武汉,430033 |
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| 摘 要： | 0Crl5Ni7Mo2Al封头是重要的核用一回路部件,通过宏观检查、金相分析以及断口形貌分析,对封头断裂原因进行了分析.结果表明,材料的韧性低,对缺口敏感,并存在应力集中,在检修时承受冲击载荷作用是封头断裂的主要原因,而韧性低是由于材料中含有粗大回火马氏体.
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| 关 键 词： | 封头 断裂 分析 一回路 部件 断裂分析 Nuclear Component Circuit Coolant Primary Analysis 回火马氏体 载荷作用 冲击 检修 应力集 存在 缺口敏感 材料 结果 断裂原因 形貌分析 |
| 文章编号： | 0254-6051（2007）08-0098-03 |
| 修稿时间： | 2007-04-26 |
Fracture Analysis of Primary Coolant Circuit Component in Nuclear |
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| MIAO Zhong-hui,JIAO Zeng-geng.Fracture Analysis of Primary Coolant Circuit Component in Nuclear[J].Heat Treatment of Metals,2007,32(8):98-100. |
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| Authors: | MIAO Zhong-hui JIAO Zeng-geng |
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| Abstract: | The chemical composition, microstructure and the mechanical properties of the failure envelops were measured,and the macro-fractography and micro-fractography of the envelop were observed for fracture analysis. The results show that the envelop fractured resulting from low toughness of material, the sensitivity to notch, stress concentration existing,and suffered from impact load during its reparation, and the low toughness are due to coarse anomally tempered martensite. |
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| Keywords: | envelop fracture analysis |
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