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    12th International Conference on Zinc & Zinc Alloy Coated Steel Sheet - GALVATECH 2021

    21–23 Jun 2021 Virtual Conference
    Virtuel Conference
    Europe/Vienna timezone
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    Session

    Solidification and Formation of Hot Dip Galvanized Coatings

    22 Jun 2021, 08:30
    Virtuel Conference

    Virtuel Conference

    Conveners

    Solidification and Formation of Hot Dip Galvanized Coatings

    • Daniel Liu
    • Dave Penney

    Presentation materials

    There are no materials yet.

    1. 41. INFLUENCE OF SURFACE ROUGHNESS OF FULL HARD STEEL ON SPANGLE OF GALVANIZED STEEL AND ACTUAL APPLICATION RESULTS
      TAE JUN PARK (Hyundai-steel)
      22/06/2021, 08:30
      Product Modifications on Metallic Coatings (Spangle Size, Solidification Path, Interface Layers, …)
      Oral Presentation
      This study was carried out to improve the surface quality of galvanized steel, which are widely used in exposed automotive panels. To control zinc grain called as spangle that occurs during solidification of galvanized steel, In view of the metallurgical aspects, we considered a new method increasing the surface area of full hard steel associated with nucleation of molten zinc in the...
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    2. 8. SPANGLE NUCLEATION AND REFINEMENT THEORY IN 55%Al-Zn COATED STEEL
      Nega Setargew (BlueScope Steel Innovation Labs)
      22/06/2021, 08:50
      Product Modifications on Metallic Coatings (Spangle Size, Solidification Path, Interface Layers, …)
      Oral Presentation
      In this paper we present spangle nucleation and refinement theory in 55%Al-Zn coated steel. We propose that the precipitation of 5c intermetallic phase, (Fe5Si2Al20+Zn) in the coating overlay is the dominant mechanism for spangle refinement. Under normal process conditions, when the strip emerges from the bath, the Fe in solution in the coating overlay diffuses to the alloy layer and...
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    3. 80. PERITECTIC STRUCTURE EVOLUTION IN HOT-DIP Zn-Al ALLOY COATINGS
      Takuya Mitsunobu (Nippon Steel Corporation)
      22/06/2021, 09:10
      Zinc-Aluminum-Magnesium and Zinc-Aluminum Coatings for Non-Automotive Application
      Oral Presentation
      Hot-dip Zn-Al alloy coated steel sheets such as 55%Al-Zn-1.6%Si and Zn-5%Al coatings are widely used in the construction industry because of their higher corrosion resistance than zinc coatings. It is well known that the corrosion resistance of hot dip Zn-Al alloy coatings depends on the microstructure formed through solidification process1). Thus, controlling the solidification microstructure...
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    4. 59. RAPID DESIGN OF NEW Zn-Mg-Al-Sn COATINGS WITH LOW MELTING POINT FOR AUTOMOTIVE SHEET APPLICATIONS VIA MACHINE LEARNING
      Rohit Bardapurkar (Colorado School of Mines)
      22/06/2021, 09:30
      Challenges in Galvanizing Advanced High Strength Steels (GI, GA,…)
      Oral Presentation
      New generation advanced high strength steels (AHSS) are utilized in automobiles to reduce weight while enhancing fuel efficiency and crash performance. Zn-based coatings are commonly applied on sheet steels to achieve sacrificial corrosion protection. Galvanizing of AHSS is challenging due to the relatively high application temperature of these coatings (460 °C for hot-dip galvanizing). High...
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