| 爆炸预处理提高D级船板(WD钢)模拟CGHAZ韧性的研究 |
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| 引用本文： | 李荣锋,戴树和,沈士明.爆炸预处理提高D级船板(WD钢)模拟CGHAZ韧性的研究[J].武钢技术,2003,41(3):41-44. |
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| 作者姓名： | 李荣锋 戴树和 沈士明 |
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| 作者单位： | 1. 武钢技术中心,湖北,武汉,430080
2. 南京化工大学,江苏,南京,210009 |
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| 摘 要： | 运用示波冲击和维氏硬度试验、扫描电镜断口和电子探针能谱分析、图象仪测定等手段研究了爆炸预处理对WD钢模拟CGHAZ韧性的影响，发现爆炸预处理具有显著提高WD钢大线能量(50kJ／cm)模拟CGHAZ韧性的效果，提高幅度达118％，其原因在于细化原奥氏体晶粒，生成了较多的先共析多边铁素体，软化了组织。
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| 关 键 词： | D级船板 WD钢 爆炸预处理 韧性 模拟CGHAZ 硬度试验 扫描电镜 电子探针 |
Study on Improvement in Simulated CGHAZ Toughness of WD Steel by Pre-welding Explosion Treatment |
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| Li Rongfeng.Study on Improvement in Simulated CGHAZ Toughness of WD Steel by Pre-welding Explosion Treatment[J].Wisco Technology,2003,41(3):41-44. |
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| Authors: | Li Rongfeng |
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| Affiliation: | Li Rongfeng (The Technology Center of WISCO Wuhan Hubei 430080) Dai Shuhe Shen Shiming (Nanjing University of Chemical Technology Nanjin Jiangsu 210009) |
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| Abstract: | The effects of pre-welding explosion treatment (PWET) on the impact toughness of simulated CGHAZ for WD steel are studied by way of V-notch Charpy impact test, optical microscope (OM), scanning electron microscope (SEM), electron microscope analysis (EMPA) and image analysis. Results show that PWET can raise the simulated welding CGHAZ impact toughness in 50?kJ/cm to 118?% due to refining the grain size of prior austenite and generation of ploygon ferrite, i.e.softening CGHAZ. |
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| Keywords: | pre-welding explosion treatment toughness simulated CGHAZ WD steel |
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