Formation of core–shell structure in high entropy alloy coating by laser cladding

• DOI: 10.1016/j.apsusc.2015.12.059
• Publication Date: 2015-12-15T19:34:01Z
• Authors: Hui Zhang; Wanfei Wu; Yizhu He; Mingxi Li; Sheng Guo
• Keywords: 0205 materials engineering; 02 engineering and technology

The formation of core-shell structure is an interesting phenomenon occurring during the solidification process, due to the liquid phase separation. The formation of core-shell structure in high-entropy alloys, a new class of advanced metallic materials, has not been reported previously, and thus constitutes an intriguing scientific question. Here, we firstly report the formation of core-shell structure in one laser cladded high-entropy alloy, where we show the nanosized-Y2O3 powder addition, serves as the catalyst for the liquid phase separation.