A unique combination of in-situ and multi-scale methodologies to analyze damage mechanisms of temper rolled zinc coating

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:763

Article

Legendre, J.^1,4  Creac'hcadec, R.¹  Tanguy, A.²  Hallais, S.²  Schmitt, J. H.³  Heripre, E.³  Gilbert, F.⁴  Jacquet, D.⁴  Mataigne, J. M.⁴ 

[1] ENSTA Bretagne, UBS ENSTA Bretagne UBO ENIB, CNRS FRE 3744, IRDL, 2 Rue F Verny, F-29806 Brest, France

[2] Univ Paris Saclay, CNRS, Ecole Polytech, LMS, Route Saclay, F-91128 Palaiseau, France

[3] Univ Paris Saclay, Cent Supelec, CNRS, MSSMat, 3 Rue Joliot Curie, F-91190 Gif Sur Yvette, France

[4] ArcelorMittal Global R&D Montataire, BP 30109,1 Route St Leu, F-60761 Montataire, France

关键词: Zinc coated steel;    Temper rolling;    Damage;    In-situ tensile test;    DIC;    FIB-SEM;   

DOI  :  10.1016/j.msea.2019.138156

来源: Elsevier

【 摘 要 】

Coated sheets for car body are assembled by spot-welding and, more and more, by adhesive bonding. Thus, during life time, the coating endures stresses which can lead to the failure of the whole bonded assembly. The behavior of the zinc coating has then to be primarily studied during tension of flat samples. Several investigation techniques, including in-situ characterizations and 3D observations, are combined to observe and understand the damage mechanisms of the zinc coating during plastic deformation. A specific attention is paid to the influence of temper rolling which is usually applied on low-carbon steel sheets after annealing and hot-dip coating. Damage is mainly observed at the boundary of large zinc grains lying on the surface plateaus, non-deformed by rolling, and often nucleates at the defects due to dendritic zinc solidification.

【 授权许可】

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