Corrosion behavior of a Mg-Zn-Ca-La alloy in 3.5 wt%NaCl solution  

作　　者：Yuzhou Du Xin Wang Dongjie Liu Wanting Sun Bailing Jiang 

机构地区：[1]School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China [2]Shaanxi Province Engineering Research Center for Magnesium Alloys,Xi’an University of Technology,Xi’an 710048,China [3]School of Materials Science and Engineering,Dongguan University of Technology,Dongguan 523808,China

出　　处：《Journal of Magnesium and Alloys》2022年第2期567-580,共14页镁合金学报（英文）

基　　金：the National Natural Science Foundation of China(No.51801150);Shaanxi Natural Science Basic Research Program(No.2019JQ-512);Shaanxi Provincial Department of Education Fund(No.16JK1557).

摘　　要：The present study investigates the corrosion behavior of a Mg–Zn–Ca–La alloy.Results indicate that the corrosion resistance is enhanced by rolling deformation and subsequent annealing treatment significantly.The microstructure,distribution of second phase and grain orientation are the main factors affecting corrosion properties.The second phase with semi-continuous network in the as-cast alloy gives rise to the penetration of corrosion into the matrix.However,the dispersed second phase after deformation results in uniform corrosion.The formation of dense corrosion layer at the initial stage of corrosion is favorable for the improvement of corrosion resistance.The sample with<0001>plane oriented towards surface exhibits good corrosion resistance,which is ascribed to the homogeneous microstructure and strong basal texture.

关 键 词：Mg–Zn–Ca–La ROLLING Second phase Texture Corrosion properties 

分 类 号：TG172[金属学及工艺—金属表面处理]