Transactions of Materials and Heat Treatment

Title：Influence of galvanized layer on mechanical properties of thin high strength steel sheet

Authors： PEI Shao-wei HAN Fei

Unit： North China University of Technology

KeyWords： galvanized plate high strength steel mechanical properties

ClassificationCode：TG304

year,vol(issue):pagenumber：2013,38(4):36-39

Abstract：

Through tensile test and fracture microscopic observation, the influence of the galvanized layer on the G550 thin high strength galvanized sheet's mechanical properties was researched, the thickness t of the samples were 0.28, 0.39, 0.45 and 0.58mm and the thickness of the galvanized layer was about 50μm in the experiment. The research results show that before and after removed the galvanized layer, the difference of mechanical of the galvanized sheet is obviously, especially the yield limit, ultimate tensile limit, n value, r value and elongation ratio δ, contrary to the Young's modulus E and Poisson's ratio μ. The yield limit and ultimate tensile limit of the galvanized sheet are higher than the bare sheet, contrary to the r value, n value and elongation ratio δ. Compared with the bare sheet, the forming performance of the galvanized sheet has a certain decline, so the subsequent forming process needs to consider the influence of the galvanized layer.

Funds：

北京市自然科学基金资助项目(3112010)；北京市中青年骨干人才培养计划(PHR20110851)

裴少伟(1987-)，男，硕士研究生

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