| EH36钢埋弧焊接头CTOD试验中的突跃效应及评价 |
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| 引用本文： | 王建平,霍立兴,张玉凤,王东坡.EH36钢埋弧焊接头CTOD试验中的突跃效应及评价[J].焊接学报,2004,25(5):80-84. |
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| 作者姓名： | 王建平 霍立兴 张玉凤 王东坡 |
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| 作者单位： | 天津大学,材料科学与工程学院,天津,300072 |
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| 摘 要： | 根据BS 74 4 8试验标准 ,在对海洋石油平台用钢EH36单、双丝埋弧焊接头的焊缝和热影响区 (HAZ)进行低温下 (- 15℃ )裂纹尖端张开位移 (CTOD)测试时 ,多个试样出现了”突跃”(F -V曲线上瞬间载荷下降、位移增加变慢 ) ,亦称”POP -IN”现象。针对这一问题 ,依据BS 74 4 8-Ⅰ中的有关评定标准 ,对存在POP -IN现象的试样进行了F-V曲线上载荷 -位移变化的测量、计算 ,并在光学显微镜 (× 10 0 0 )下观察了断裂面上脆性起裂点处的微观组织 ,从而合理取舍了焊接接头这一非均质结构中出现的POP -IN效应。
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| 关 键 词： | EH36钢 埋弧焊接头 裂纹尖端张开位移 突跃 |
| 文章编号： | 0253-360X(2004)05-80-05 |
| 收稿时间： | 2003/11/7 0:00:00 |
Pop-in effect and its assessment in CTOD test for submerged-arc welded joint of steel EH36 |
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| WANG Jian-ping,HUO Li-xing,ZHANG Yu-feng and WANG Dong-po.Pop-in effect and its assessment in CTOD test for submerged-arc welded joint of steel EH36[J].Transactions of The China Welding Institution,2004,25(5):80-84. |
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| Authors: | WANG Jian-ping HUO Li-xing ZHANG Yu-feng and WANG Dong-po |
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| Affiliation: | School of Material Science and Engineering, Tianjin University, Tianjin 300072, China,School of Material Science and Engineering, Tianjin University, Tianjin 300072, China,School of Material Science and Engineering, Tianjin University, Tianjin 300072, China and School of Material Science and Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | |
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| Keywords: | steel EH36 submerged-arc welded joint crack tip o pening displacement pop-in |
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