| 锅炉末级过热器T92/HR3C异种钢接头断裂原因分析 |
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| 引用本文： | 孙标,杨贤彪,肖杰,杨超.锅炉末级过热器T92/HR3C异种钢接头断裂原因分析[J].江苏电机工程,2011,30(6):77-80. |
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| 作者姓名： | 孙标 杨贤彪 肖杰 杨超 |
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| 作者单位： | 1. 神华国华(北京)电力研究院有限公司,北京,100069
2. 江苏方天电力技术有限公司,江苏南京,211102 |
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| 摘 要： | 介绍了某超超临界锅炉高温过热器T92/HR3C异种钢焊接接头发生的一种较罕见的断裂失效形式,通过对失效试件断口形貌特征、胀粗管段的硬度分布规律及金相组织进行试验分析.并结合失效试件的制造工艺和运行工况进行原因分析,推断焊后热处理工艺控制不当导致T92侧母材金相组织异常和力学性能下降是导致异种钢过渡段发生胀粗和断裂失效的...
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| 关 键 词： | 失效分析 异种钢焊接接头 焊后热处理 T92钢 显微组织 力学性能 |
Failure Analysis on Welded Joints of T92/HR3C Final Superheater of Ultra-supercritical Boiler |
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| SUN Biao,YANG Xian-biao,XIAO Jie,YANG Chao.Failure Analysis on Welded Joints of T92/HR3C Final Superheater of Ultra-supercritical Boiler[J].Jiangsu Electrical Engineering,2011,30(6):77-80. |
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| Authors: | SUN Biao YANG Xian-biao XIAO Jie YANG Chao |
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| Affiliation: | SUN Biao1,YANG Xian-biao2,XIAO Jie2,YANG Chao2(1.Shenhua Guohua Electric Power Research InstituteCo.Ltd.,Beijing 100069,China,2.Jiangsu Fangtian Electric Power Technology Co.Ltd.,Nanjing 211102,China) |
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| Abstract: | An infrequent fracture failure of T92/HR3C dissimilar steel welded joints of an USC final superheater was analyzed by hardness distribution and microstructure.Meanwhile,manufacture process and equipment operating conditions were investigated.The results indicate that post welding heat treatment process has a great influence on the weld line,the microstructure and mechanical property of T92 steel.The relevant suggestion was put forward to strictly control post welding heat treatment process.The microstructur... |
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| Keywords: | failure analysis dissimilar steel welded joints post welding heat treatment T92 steel microstructure mechanical property |
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