Effect of crystal orientation on corrosion behavior of directionally solidified Mg-4 wt% Zn alloy. Issue 7 (July 2018)

• Record Type: Journal Article
• Authors: Jia, Hongmin; Feng, Xiaohui; Yang, Yuansheng
• Is Part Of: Journal of materials science & technology. Volume 34:Issue 7(2018)
• Page Start: 1229
• Page End: 1235
• Publication Date: 2018-07
• Subjects: Mg-4 wt% Zn alloy -- Directional solidification -- Crystal orientation -- Corrosion resistance; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2017.06.009
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: Microstructure and crystallographic orientation of directionally solidified Mg-4 wt% Zn alloy were characterized by X-ray computed tomography (XCT) and electron backscatter diffraction (EBSD) in this study. Results reveal that Mg-4 wt% Zn alloy with dendritic microstructure exhibits typical { 0002 } basal texture along growth direction. Based on this, the effect of grain orientation on corrosion behavior of directionally solidified Mg-4 wt% Zn alloy in 0.9 wt% NaCl solution was investigated. Result shows that { 0002 } oriented planes have better corrosion resistance than { 11 2 ¯ 0 } and { 10 1 ¯ 0 } ones, which is attributed to a synergistic effect of surface energy, atomic packing density and the stability of oxidation film.