王思雨,徐维健,杨旭,王斌,王丙兴

• 1:东北大学材料科学与工程学院

摘要(Abstract)：

为了改善镁锂合金的耐蚀性，采用均匀化热处理+冷轧退火的工艺对其进行处理，利用扫描电镜和电化学试验研究了不同工艺处理后Mg-9Li-2Al-1Y合金的微观组织和耐蚀性能。结果表明：冷轧退火态Mg-9Li-2Al-1Y合金中的α-Mg相更加细小且分布均匀，腐蚀方式由严重的局部腐蚀转变为均匀腐蚀，耐腐蚀性能明显提升。与铸态相比，冷轧退火态合金组织中高电位Al_2Y粒子沿轧制方向分布更加均匀，延缓了低电位α-Mg相的腐蚀进程。冷轧退火态的合金在3.5%的NaCl溶液中浸泡后产生了一层含Li_2CO_3的腐蚀产物层，提高了致密性，增强了腐蚀产物层对基体的保护作用。

关键词(KeyWords)： 镁锂合金;耐腐蚀性能;均匀化热处理;冷轧退火处理

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王思雨,徐维健,杨旭,王斌,王丙兴

DOI: 10.13289/j.issn.1009-6264.2021-0575

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