| CLAM-316L TIG焊接接头显微组织特征分析 |
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| 引用本文： | 张俊钰,吴庆生,黄波,李春京,黄群英,FDS团队.CLAM-316L TIG焊接接头显微组织特征分析[J].核科学与工程,2016(4):492-496. |
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| 作者姓名： | 张俊钰 吴庆生 黄波 李春京 黄群英 FDS团队 |
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| 作者单位： | 1. 中国科学技术大学,安徽 合肥 230027;中国科学院核能安全技术研究所, 中国科学院中子输运理论与辐射安全重点实验室 安徽 合肥 230032;2. 中国科学院核能安全技术研究所,中国科学院中子输运理论与辐射安全重点实验室 安徽 合肥,230032 |
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| 基金项目： | 国家自然科学基金(2013GB108005,2014GB112003);中科院知识创新项目(KJCX2-YW-N35) |
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| 摘 要： | 采用309焊丝对中国低活化马氏体(CLAM)钢和316L不锈钢进行TIG焊,并利用光学显微镜、扫描电镜和维氏硬度仪分析对接接头的微观组织和显微硬度分布。结果表明,CLAM-316L TIG焊接头按照显微组织特征可分为六个区域,即CLAM钢母材、CLAM钢热影响区、CLAM钢熔合区、焊缝金属、316L热影响区、316L母材。CLAM钢熔合区显微组织为淬火马氏体;焊缝金属区为粗大的胞状枝晶组织;316L热影响区和母材均为奥氏体组织,热影响区晶粒尺寸有明显长大。焊态接头整体硬度分布均匀,只有CLAM钢熔合区硬度较高。
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| 关 键 词： | 聚变堆 CLAM钢 异种钢焊接 TIG焊 |
Microstructure properties of CLAM/316L TIG welded joint |
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| Affiliation: | ZHANG Jun-yu;WU Qing-sheng;HUANG Bo;LI Chun-jing;HUANG Qun-ying;FDS Team;University of Science and Technology of China;Key Laboratory of Neutronics and Radiation Safety,Institute of Nuclear Energy Safety Technology,Chinese Academy of Sciences; |
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| Abstract: | The CLAM-316L dissimilar metal joints were welded by Tungsten Inert Gas (TIG) welding using 309 austenite steel as filler material.The microstructure and microhardness distribution of the butt welds were investigated.According to the microstructure characteristics, the joint can be divided into six regions, CLAM base metal (BM), CLAM heat affected zone (HAZ), CLAM fusion zone (FZ), weld metal (WM), 316L HAZ, 316L BM.The CLAM BM was composed of quenched martensite.The WM consisted of cellular dendrite.Both the HAZ and BM of 316L steel were composed of austenite, but the grain size increasing occurred in the 316L HAZ.The overall hardness distribution in the transverse direction of the joints was homogeneous, except the CLAM FZ with a higher hardness. |
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| Keywords: | Fusion reactor CLAM steel Dissimilar steel joining TIG welding |
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