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Meeting Materials Science & Technology 2020
Symposium Advances in Zinc-coated Sheet Steel Processing and Properties
Presentation Title Effect of Hot Press Forming on Electrochemical Properties of Galvanized Steel
Author(s) Jaime Jewer, Joseph R. McDermid, Joseph Kish
On-Site Speaker (Planned) Jaime Jewer
Abstract Scope Vehicle light weighting is a driving force for the use of advanced high strength steels for automotive purposes. The process of hot press forming galvanized steel creates intermetallic iron-zinc phases from the original Zn coating. These phases are gamma and zinc ferrite which provide different extents of cathodic protection required for corrosion control. An experimental grade of press-hardenable galvanized steel was created to provide target mechanical properties as well as cathodic protection. During press forming, die friction negatively effects the ability of the galvanized coating to provide cathodic protection. Electrochemical test methods were used to determine the extent of cathodic protection in each region of the U-channel part for several annealing times by comparing corrosion potentials of the coating in each condition with that of the bare steel. A salt spray test was carried out to track the extent of corrosion on the part.


Effect of Hot Press Forming on Electrochemical Properties of Galvanized Steel
Reduction of the Internal and External Oxidation of the Charge during Galvanizing under SHS Conditions
Role of Liquid Zn and α-Fe(Zn) on Liquid Metal Embrittlement Cracking of Resistance Spot Welded Medium Mn Steels
The Effect of Galvanizing Sheet Steel under SHS Conditions on the Development of Steel Microstructures
Zinc Coating Control Using a New Integrated Indicator ECP-Zn

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