Effect of heating temperature on surface oxides of a Zn-1.2Al-1.2Mg coated press-hardened steel  

作　　者：BI Wenzhen WEI Xicheng WANG Bo 

机构地区：[1]School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China [2]Research Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China [3]State Key Laboratory of Development and Application Technology of Automotive Steels(Baosteel),Shanghai 201999,China

出　　处：《Baosteel Technical Research》2024年第4期1-8,共8页宝钢技术研究(英文版)

基　　金：financial support by the Natural Science Foundation of Shanghai(grant number 24ZR1423300).

摘　　要：The experiment utilized commercial hot-dip Zn-1.2Al-1.2Mg(designated ZM)coated steel sheets,which were heated in a resistance furnace and held for 5 min at temperatures ranging from 600℃to 900℃.The main goal was to investigate the effect of heating temperature on the surface oxidation behavior of the ZM coating.The results show that at lower heating temperatures,the surface oxides are mainly composed of an original thin Al_(2)O_(3) layer,which acted as a barrier preventing further oxidation of the coating.By contrast,at higher heating temperatures,intermetallic phase formation caused Al_(2)O_(3) layer fragmentation.As a result,the oxide layer of the coating surface became more complex,featuring thicker Al_(2)O_(3),MgO,and ZnO.

关 键 词：ZM coating surface oxidation behavior Al_(2)O_(3) MGO ZnO 

分 类 号：TG1[金属学及工艺—金属学]