| 高强钢焊接接头显微组织的研究进展 |
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| 引用本文： | 王伟光,张天理,于一帆,武雯,陈浩欣. 高强钢焊接接头显微组织的研究进展[J]. 理化检验(物理分册), 2021, 57(3): 50-55 |
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| 作者姓名： | 王伟光 张天理 于一帆 武雯 陈浩欣 |
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| 作者单位： | 上海工程技术大学 材料工程学院,上海 201620;上海材料研究所,上海 200437 |
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| 基金项目： | 国家自然科学基金资助项目(51804196)。 |
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| 摘 要： | 综述了热输入、合金元素、冷却速率和应变速率对高强钢焊接接头显微组织的影响和高温共聚焦显微镜原位观察高强钢显微组织的最新研究进展,总结了高强钢焊接接头粗晶热影响区显微组织的转变机理.结果表明:通过延长冷却时间、减少热输入量、控制合金元素的含量和采用预处理提高应变速率等方法,可以调控高强钢焊接接头显微组织中马氏体、粒状贝氏...
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| 关 键 词： | 高强钢 粗晶热影响区 原位观察 显微组织 固态相变 |
Research Progress on Microstructure of Welded Joint of High Strength Steel |
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| WANG Weiguang,ZHANG Tianli,YU Yifan,WU Wen,CHEN Haoxin. Research Progress on Microstructure of Welded Joint of High Strength Steel[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2021, 57(3): 50-55 |
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| Authors: | WANG Weiguang ZHANG Tianli YU Yifan WU Wen CHEN Haoxin |
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| Affiliation: | (School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Shanghai Research Institute of Materials,Shanghai 200437,China) |
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| Abstract: | The effects of heat input,alloying elements,cooling rate and strain rate on microstructure of high strength steel welded joint and the latest research progress in situ observation of microstructure of high strength steel by high temperature confocal microscope were reviewed.The transformation mechanism of microstructure in coarse grain heat affected zone of welded joint of high strength steel was summarized.The results show that the contents of martensite,granular bainite and acicular ferrite in the microstructure of high strength steel welded joint can be controlled to reach the optimal proportion by prolonging cooling time,reducing heat input,controlling the content of alloying elements and increasing strain rate by pretreatment,so as to optimize the mechanical properties of high strength steel welded joint.The dynamic process of phase transformation of high strength steel can be observed by high temperature confocal microscope,and the phase transformation principle of high strength steel can be obtained,which can provide guidance for the formulation of high strength steel welding process. |
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| Keywords: | high strength steel coarse grain heat affected zone in situ observation microstructure solid phase transformation |
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