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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

    Fundamentals on Surface Oxidation and Metallic Reactions

    A
    23 Jun 2021, 10:40
    Virtuel Conference

    Virtuel Conference

    Conveners

    Fundamentals on Surface Oxidation and Metallic Reactions

    • Johann Strutzenberger
    • Maxime Monnoyer

    Presentation materials

    There are no materials yet.

    1. 107. GALVANIZING OF TRIP-Si STEELS
      Louis Bordignon (CRM group)
      23/06/2021, 10:40
      Challenges in Galvanizing Advanced High Strength Steels (GI, GA,…)
      Oral Presentation
      The development of galvanised high strength steels requires a better understanding of the gas – metal reactions during continuous annealing and their influence on steel – zinc reactivity during hot dip galvanising. Indeed, external selective oxidation, mainly formed during soaking, will hamper the formation of the inhibition layer, which is a key step for zinc wetting and further adequate...
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    2. 18. EFFECT OF PROCESS ATMOSPHERE DEW POINT AND MINOR Sn ADDITION ON THE SELECTIVE OXIDATION DURING INTERCRITICAL ANNEALING OF A MEDIUM-Mn THIRD GENERATION ADVANCED HIGH STRENGTH STEEL
      Kazi Mahmudul Haque Bhadhon (Centre for Automotive Materials and Corrosion, McMaster University)
      23/06/2021, 11:00
      Challenges in Galvanizing Advanced High Strength Steels (GI, GA,…)
      Oral Presentation
      Medium-Mn TRIP steels are promising candidates amongst the third generation advanced high strength steels (3G-AHSSs) for meeting automotive weight reduction demands without compromising passenger safety. However, the thermal processing of these steels should be compatible with the continuous galvanizing line (CGL) as it provides cost-effective, robust corrosion protection for autobody parts....
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    3. 191. UNDERSTANDING THE EVOLUTION OF SURFACE OXIDES UPON DUAL PHASE STEELS DURING AN ANNEALING CYCLE
      Jennifer Rolls (WMG, University of Warwick)
      23/06/2021, 11:20
      Structure and Surface Analysis as well as Defect Characterization
      Oral Presentation (*)
      Dual phase (DP) steels are known for having issues with hot dip galvanizing due to the formation of surface alloy-oxides [1]. These oxides appear during the annealing step, preventing a good zinc adhesion to the base metal [2]. This work aims to give a fundamental understanding of the nucleation and growth mechanisms of the oxides. DP800 steel samples were oxidised in a flowing argon...
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    4. 106. UNIQUE SIMULTANEOUS RAPID COOLING AND ZINC COATING TECHNOLOGY - NO BAINITE BEFORE ZINC POT
      Pertti Sippola (Psitec Oy)
      23/06/2021, 11:40
      New Galvanizing Lines with Innovative Solutions and New Technological Concepts
      Oral Presentation
      A new type of martensitic steel by utilizing the concept of Quenching and Partitioning (Q&P) has recently been established known also as “Low-End cycle”. A too high partitioning treatment temperature at 465°C will not provide the best metallurgical results of the Q&P-treatment which are possible to be achieved without the hot-dip coating at the last step of the metallurgical heat treatment...
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    5. 200. ENHANCEMENT OF HOT DIP GALVANIZING ON AS-CAST HIGH-Mn STEEL BY FABRICATION OF FUNCTIONALLY GRADED MULTILAYERS THROUGH LASER CLADDING OF LOW CARBON STEEL
      Prof. Jung-Wook Cho (Pohang University of Science and Technology)
      23/06/2021, 12:00
      Challenges in Galvanizing Advanced High Strength Steels (GI, GA,…)
      Oral Presentation

      To improve the surface feature of high-Mn steel, such as wettability with liquid Zn, a functionally graded multilayer was fabricated on the top of as-cast high-Mn steel slab by laser cladding process. For the alloying material, low carbon steel powder (0.07C, 1.83Mn) was deposited. To investigate the optimum condition for wettability, four different samples were prepared: bare high-Mn steel...

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