材料科学
腐蚀
选择性激光熔化
微观结构
退火(玻璃)
合金
复合材料
电偶腐蚀
冶金
作者
Chuanqiang Li,Yuansong Deng,Mincong Chen,Biliang Yuan,Yong Dong,Changjian Yan
标识
DOI:10.1016/j.matlet.2023.134711
摘要
The compared microstructure and corrosion resistance of as-cast, as-SLMed (selective laser melting) and as-annealed Al0.3CoCrFeNiCu high-entropy alloy were investigated in this work. The results revealed that the SLM technique could effectively reduce the Cu segregation, and the beneficial nano-sized L12 ordered phase were precipitated in as-annealed samples (annealing treatment at 600 °C/10 h). Corrosion performance of three samples in 3.5% NaCl solution were improved with the order of as-cast < as-SLMed < as-annealed. As the elimination of Cu-rich phase and the fine microstructure occurring as-SLMed sample, resulting in the trivial micro-galvanic corrosion, and thus the corrosion performance of as-SLMed sample was enhanced. In addition, the precipitated L12 ordered phases in as-annealed sample further dramatically improved the corrosion resistance of as-SLMed sample.
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