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帶極埋弧堆焊EQ309L不銹鋼的微觀組織EBSD分析
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1.太原科技大學(xué) 材料科學(xué)與工程學(xué)院，山西 太原 030024;2.太原重型機(jī)械教育部工程研究中心，山西 太原 030024

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基金項(xiàng)目:

the Key Research and Development (R&D) Projects of Shanxi Province (Grant No. 201903D121054), Innovation Project of Colleges and Universities in Shanxi Province(2019L0621), and the Coordinative Innovation Centre of Taiyuan Heavy Machinery Equipment.


EBSD Analysis of Microstructure of EQ309L Stainless Steel After Band Electrode Submerged Arc Overlay Welding
Author:
Affiliation:

1.School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;2.Coordinative Innovation Center of Taiyuan Heavy Machinery Equipment, Taiyuan 030024, China

Fund Project:

Key Research and Development (R&D) Projects of Shanxi Province (201903D121054); Innovation Project of Colleges and Universities in Shanxi Province (2019L0621); Science and Technology Major Project of Shanxi Province (20181101015)

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    摘要:

    采用帶極埋弧堆焊在Q345R基體表面堆焊EQ309L不銹鋼焊帶。運(yùn)用電子背散射衍射（EBSD）表征技術(shù)，觀測(cè)了Q345R和EQ309L之間的EQ309L側(cè)、Q345R側(cè)和界面的微觀組織特征。結(jié)果表明：在Q345R基體上大部分晶粒內(nèi)部畸變嚴(yán)重，觀測(cè)到明顯的沿原軋制方向的條帶狀晶粒。在過(guò)熱粗晶區(qū)域，Q345R基體的平均晶粒尺寸為30~40 μm，晶粒粗化不嚴(yán)重；在細(xì)晶區(qū)，Q345R基體的平均晶粒尺寸為10~20 μm。Q345R基體側(cè)熔合線(xiàn)向堆焊層延伸35~40 μm后的區(qū)域是過(guò)渡區(qū)，該區(qū)域具有體心立方（bcc）結(jié)構(gòu)。EQ309L層晶粒粗大，呈柱狀晶形貌，具有明顯的<100>織構(gòu)特征。

    Abstract:

    Band electrode submerged arc overlay welding was used to weld welding strip of EQ309L stainless steel on the surface of Q345R matrix. The microstructure of EQ309L side, Q345R side, and their interfaces were observed by electron backscattered diffraction (EBSD) technique. Results show that most grains in Q345R matrix are seriously distorted, and the banded grains along the original rolling direction can be clearly observed. The average grain size of Q345R matrix is 30~40 μm in the overheated coarse-grain region, and the grain coarsening is not severe. The average grain size of the fine-grain region is 10~20 μm in the Q345R matrix. The transition zone is 35~40 μm away from the fusion line of Q345R matrix, and it has body-centered cubic (bcc) structure. The EQ309L layer has coarse grains, showing the microstructure of columnar crystal with obvious <100> texture.

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引用本文

趙菲,劉子敬,馬立峰,趙廣輝.帶極埋弧堆焊EQ309L不銹鋼的微觀組織EBSD分析[J].稀有金屬材料與工程,2022,51(1):98~105.[Zhao Fei, Liu Zijing, Ma Lifeng, Zhao Guanghui. EBSD Analysis of Microstructure of EQ309L Stainless Steel After Band Electrode Submerged Arc Overlay Welding[J]. Rare Metal Materials and Engineering,2022,51(1):98~105.]
DOI：10.12442/j. issn.1002-185X.20210544

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  • 收稿日期:2021-06-25
  • 最后修改日期:2021-07-23
  • 錄用日期:2021-08-05
  • 在線(xiàn)發(fā)布日期: 2022-02-04
  • 出版日期: 2022-01-28