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YE Shuo, DI Hongshuang, ZHANG Zhenghui, ZHANG Jin, WANG Xiaonan. Effect of high carbon steel foil on microstructure and mechanical properties of laser welded Al-Si coated press-hardened steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(10): 106-112. DOI: 10.12073/j.hjxb.20211027004
Citation: YE Shuo, DI Hongshuang, ZHANG Zhenghui, ZHANG Jin, WANG Xiaonan. Effect of high carbon steel foil on microstructure and mechanical properties of laser welded Al-Si coated press-hardened steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(10): 106-112. DOI: 10.12073/j.hjxb.20211027004
shu

Effect of high carbon steel foil on microstructure and mechanical properties of laser welded Al-Si coated press-hardened steel

  • 1.

    The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China

  • 2.

    Shagang School of Iron and Steel, Soochow University, Suzhou 215021, China

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  • Received Date: October 26, 2021
  • Available Online: July 26, 2022
    Graphical Abstract
    • Abstract
  • In this article, laser welding experiment of 1.5 mm thick Al-Si coated hot formed steel was carried out with 45 steel foil as interlayer by CWX3000 fiber laser. The effect of the carbon content of fusion zone on the microstructure and mechanical properties of the welded joint was studied. The results showed that after adding foil, the carbon content of fusion zone increased, the austenite phase zone was expanded, the δ-ferrite fraction of fusion zone decreased from 17.3% to 4.5%, the average hardness of fusion zone increased from 425HV to 557HV, the tensile strength of welded joint increased from 980MPa to 1280MPa, and the cupping value increased from 1.7mm to 3.2mm. Tensile strength and formability are both improved.
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    • References (15)
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