Microstructure of Hot-Dip Galvanized Zn-Al-Mg alloy Coating
(0) The microstructure of hot-dip galvanized Zn-11%Al-3%Mg-0.2%Si alloy coating was studied in this article.X-ray diffraction study revealed the coating was composed by Zn,Al and MgZn2 phase.Optical microscope and scanning electron microscope observations showed the coating was occupied by snowflake-like dendrite,double hexagonal organization and eutectic.The main backbone was the dendrite considered to be a phase of HCP crystal structure according to its morphology.Transmission electron microscopy and energy dispersive spectroscopy research on the dendrite suggested that an intermediate Zn-Al phase was formed at high temperature,then decomposed into a granular eutectoid of Zn and Al after cooling down to room temperature,and the eutectoid Zn and Al had a certain crystallographic relationship.The coating solidification process and the grain crystal structure were discussed.
Hot-dip galvanized coating Zn-Al-Mg coating dendrites grain orientation
Yu Kangcai Li Jun Liu Xin Li Jianguo Xue Xiaohuai
School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Baoshan Iron and Steel Co.Ltd, Shanghai 201900, China School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
国际会议
上海
英文
43-43
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）