Materials Science and Technology ( IF 1.8 ) Pub Date : 2022-07-19 , DOI: 10.1080/02670836.2022.2068290 Yan Tang 1 , Zhisheng Nong 2 , Hongliang Zhang 2 , Qichi Le 3 , Baolin Wu 2
The microstructural evolution and corrosion behaviour of three kinds of Mg alloy containing AlTiB (α, α + , ) were investigated. The result showed that changing Li content can transform the matrix of Mg alloy from α-Mg to -Li. Except for -Li, the microstructural morphology of α-Mg is refined by TiB2, In the study of corrosion behaviour, a structure of multiple layers is formed on corrosion surfaces, and the α + alloy has a poor corrosion resistance which results from a mechanism of the dynamic galvanic couple between α-Mg and -Li. However, the -Li alloy with high Li content has relatively good corrosion resistance.
中文翻译:
Mg合金与AlTiB的晶体结构转变引起的腐蚀行为
研究了三种含AlTiB (α, α + , ) 镁合金的组织演变和腐蚀行为。结果表明,改变Li含量可使镁合金基体由α-Mg转变为-Li。除-Li外,TiB 2细化了α-Mg的微观组织形貌,在腐蚀行为研究中,腐蚀表面形成了多层结构,α+合金的耐腐蚀性差,这是由于α-Mg和-Li之间的动态电偶机制。然而,高锂含量的-Li合金具有较好的耐腐蚀性。