| 高温过热器异种钢接头开裂原因分析 |
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| 引用本文： | 高义斌,董勇军,黄纯德.高温过热器异种钢接头开裂原因分析[J].山西电力,2013(6):62-64. |
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| 作者姓名： | 高义斌 董勇军 黄纯德 |
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| 作者单位： | 山西电力科学研究院,山西太原030001 |
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| 摘 要： | 针对开裂和未开裂T91＋12Cr1MoVG异种钢接头进行了化学成分、力学性能、显微硬度、金相等内容的试验检查,发现开裂起源于管接头12Cr1MoVG低合金侧熔合线粗晶区,发生于再次加热过程中,属于再热裂纹,这与焊接或热处理工艺执行不到位导致焊接残余应力较大密切相关。
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| 关 键 词： | 12Cr1MoVG 异种钢接头 再热裂纹 焊接工艺 |
Cause Analysis on the Cracking of Dissimilar Steel Welded Joints in High-temperature Superheater |
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| GAO Yi-bin,DONG Yong-jun,HUANG Chun-de.Cause Analysis on the Cracking of Dissimilar Steel Welded Joints in High-temperature Superheater[J].Shanxi Electric Power,2013(6):62-64. |
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| Authors: | GAO Yi-bin DONG Yong-jun HUANG Chun-de |
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| Affiliation: | (Shanxi Electric Power Research Institute, Taiyuan, Shanxi 030001, China) |
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| Abstract: | Tests about the cracked and non-cracked T91＋12Cr1MoVG dissimilar steel welded joints were carried out in terms of their chemical constituents,mechanical property,micro-hardness and metallography etc. The results showed that cracking originated from coarse-grained zone of fusion line,located at 12Cr1MoVG low-alloy side of tube joint. The cracking occurred during the reheating process,which is closely related to improper operation of welding and heat treatment. |
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| Keywords: | 12Cr1MoVG dissimilar steel welded joints reheat cracking welding process |
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