(中南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 綜述了鋁鋰合金研發(fā)歷程及成分設(shè)計(jì)的發(fā)展階段，重點(diǎn)闡述了Al-Cu-Li系鋁鋰合金中主合金化元素Cu、Li含量對時(shí)效析出相類型、力學(xué)性能及耐腐蝕性能的影響規(guī)律及影響機(jī)理，詳細(xì)論述了微合金化元素Zr、Mn、Mg、Ag、Zn、稀土和In等對Al-Cu-Li系鋁鋰合金力學(xué)性能、耐腐蝕性能及微觀組織包括再結(jié)晶、時(shí)效析出相類型與分布密度的影響。結(jié)合筆者課題組研究結(jié)果，提出了高強(qiáng)鋁鋰合金及耐腐蝕鋁鋰合金兩種類型鋁鋰合金的成分設(shè)計(jì)思路。
關(guān)鍵字: 鋁鋰合金；合金化；微合金化；力學(xué)性能；腐蝕；微觀組織
（School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The research process of Al-Li alloys and their composition design development stages are summarized. The influence and corresponding mechanism of contents of main alloying elements Cu and Li on the aging precipitate types, mechanical properties and corrosion resistance of Al-Cu-Li series alloys are emphatically expounded. The effects of micro-alloying elements Zr, Mn, Mg, Ag, Zn, Rare earth (RE) and Indium (In) on the mechanical properties, corrosion resistance and micro-structures, such as recrystallization, type and population density of aging precipitates, are discussed in detail. Based on the reported literatures and the research results of our research group, the composition design ideas of two kinds of Al-Li alloys, high strength Al-Li alloys and corrosion resistant Al-Li alloys, are proposed.
Key words: Al-Li alloy; alloying; micro-alloying; mechanical property; corrosion; microstructure
