文章信息/Info

Title:

Research Progress of Erbium-Containing Aluminum Alloys

文章編號:

1674-3962(2022)10-0778-08

作者:

黃暉; 文勝平; 魏午; 吳曉藍; 亓鵬; 郭彥梧; 榮莉; 高坤元; 聶祚仁

（北京工業大學材料與制造學部 先進鋁合金研究所，北京 100124）

Author(s):

HUANG Hui; WEN Shengping; WEI Wu; WU Xiaolan; QI Peng; GUO Yanwu;  RONG Li; GAO Kunyuan; NIE Zuoren

（Institute of Advanced Aluminum Alloy, Faculty of Materials and Manufacturing，Beijing University of Technology, Beijing 100124, China)

關鍵詞:

鋁合金; 微合金化; 鉺（Er）; 熱穩定性; 3D打印

Keywords:

aluminum alloys;  microalloying;  erbium;  thermal stability;  3D printing

分類號:

TG146��.21

DOI:

10.7502/j.issn.1674-3962.202206005

文獻標志碼:

A

摘要:

鋁合金性能向高比強、高比模、高損傷容限、耐熱和耐蝕等方向發展，微合金化是提高鋁合金性能的重要手段，大量研究工作表明，鋁合金中添加廉價元素鉺（Er）能夠起到有效的微合金化作用。對Al�睧r析出相的結構、析出規律進行了總結，并對Er元素在幾類工業鋁合金、鑄造鋁合金和3D打印鋁合金中的作用進行了綜述。微合金化元素Er在鋁合金中可形成納米級Al3Er強化相，在相同原子含量的情況下，Al3Er的彌散強化效應比Al3Sc更顯著。Er元素的加入及Al3Er相的析出可明顯細化鋁合金的組織，提高鋁合金的再結晶溫度，促進主強化相的析出，最終大幅度提高鋁合金的強度或塑性。Er元素還可以與Zr等元素形成高穩定性Al3（ErZr）等復合強化相，通過其對位錯亞結構、晶粒形態調控等多層次作用機理，有效地提高鋁合金耐熱性能、耐腐蝕性能，以及3D打印成形裂紋抑制等綜合性能。目前，微合金化元素Er及其復合微合金化作用已經成功應用在Al-Cu系、Al-Mg系、Al-Zn-Mg系變形鋁合金以及鑄造鋁合金、3D打印鋁合金中，成為提高鋁合金綜合性能的一種重要方法。

Abstract:

The properties of aluminum alloys are developing towards high specific strength, high specific modulus, high damage tolerance, heat resistance and corrosion resistance. Microalloying is an important means to improve the properties of aluminum alloys. A large number of studies have shown that adding cheap element Er to aluminum alloys can play an effective role in microalloying. In this paper, the structure and precipitation of Al-Er phase are summarized, and the role of Er in several types of industrial aluminum alloys, cast aluminum alloys and 3D printed aluminum alloys is reviewed. Microalloying element Er can form nano sized Al3Er strengthening phase in aluminum alloys, under the same atomic content, the dispersion precipitation strengthening effect of Al3Er is more significant than that of Al3Sc. The addition of Er element and the precipitation of Al3Er phase can obviously refine the aluminum alloys structure, increase the recrystallization temperature, promote the precipitation of main strengthening phases, and greatly improve the strength or plasticity of aluminum alloys. Er can also form high stability Al3(ErZr) and other composite strengthening phases with Zr and other elements, through its multi�瞝evel action mechanism on dislocation substructure and grain morphology regulation, Er can effectively improve the comprehensive properties of aluminum alloys, such as heat resistance, corrosion resistance and 3D printing crack suppression. At present, the microalloying element Er and its composite microalloying have been successfully applied in Al-Cu system, Al-Mg system, Al-Zn-Mg system, some cast aluminum alloys and 3D printed aluminum alloys, and become an important method to improve the comprehensive properties of aluminum alloys.