含铒微合金化铝合金：综述
Journal of Materials Science
(
IF
3.9
)
Pub Date : 2024-01-19
, DOI:
10.1007/s10853-023-09185-w
Xiaolan Wu
,
Meng Sun
,
Liang Hong
,
Shengping Wen
,
Wu Wei
,
Kunyuan Gao
,
Li Rong
,
Xiangyuan Xiong
,
Hui Huang
,
Zuoren Nie
几十年来，微合金化一直是铝合金开发的重要方法。大量论文表明，添加微量元素铒（Er）可以有效提高铝合金的综合性能。与微量元素钪（Sc）类似，在铝合金中添加微量元素Er可以形成纳米尺寸的L1 2有序Al 3 Er析出物，该析出物与Al基体共格。但在相同原子含量下， Al 3 Er的弥散析出强化效果比Al 3 Sc的弥散析出强化效果更显着。在同时添加Er和Zr的情况下，形成核壳结构的Al 3 (Er,Zr)沉淀物而不是Al 3 Er沉淀物。这些热稳定的纳米级析出物可以显着细化晶粒，延缓再结晶，提高机械性能和耐腐蚀性。本文综述了几种典型的含铒微合金化商业铝合金，如2xxx（Al-Cu）合金、4xxx（Al-Si）合金、5xxx（Al-Mg）合金、7xxx（Al-Zn-Mg-Cu）合金、以及选择性激光熔化铝合金。
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Er-containing microalloyed aluminum alloys: a review
Microalloying has been an important method in aluminum alloy development for decades. Large number of papers have shown that the addition of trace element Erbium (Er) can effectively improve the comprehensive properties of aluminum alloys. Similar with the trace element Scandium (Sc), addition of trace element Er in aluminum alloys could form nano-sized L12-ordered Al3Er precipitates, which was coherent with the Al matrix. However, the dispersion precipitation strengthening effect of Al3Er was more significant than that of Al3Sc, at the same atomic content. In the case of the addition of both Er and Zr, core–shell-structured Al3(Er, Zr) precipitates formed instead of Al3Er precipitates. Those thermally-stable nanosized precipitates could significantly refine the grain size, retard the recrystallization, improve the mechanical properties and corrosion resistance. This paper reviewed several typical Er-containing microalloyed commercial aluminum alloys, like 2xxx (Al–Cu) alloys, 4xxx (Al–Si) alloys, 5xxx (Al–Mg) alloys, 7xxx (Al–Zn–Mg–Cu) alloys, as well as selective laser melting aluminum alloys.
Graphical abstract
更新日期：2024-01-20