High creep resistance behavior of the casting Al–Cu alloy modified by La
High creep resistance behavior of the casting Al–Cu alloy modified by La
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DOI：
10.1016/j.scriptamat.2009.09.007
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发表时间：
2009-12
影响因子：
6
通讯作者：
D. Yao;Wengui Zhao;Hailong Zhao;F. Qiu;Q. Jiang
中科院分区：
文献类型：
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作者：
D. Yao;Wengui Zhao;Hailong Zhao;F. Qiu;Q. Jiang
经La改性的铸态Al-Cu合金的抗蠕变性能几乎是未改性Al-Cu合金的3-5倍。La的加入导致改性铸态Al-Cu合金在晶界处形成al11la3相，在枝晶间形成空隙。al11la3相表现出良好的热稳定性，抑制了蠕变过程中晶界的迁移和位错的移动。
The creep resistance of casting Al–Cu alloy modified with La is almost 3–5 times higher than that of the unmodified one. La addition results in the formation of (i) Al11La3phases in the grain boundaries and (ii) spaces among the dendrites in the modified casting Al–Cu alloy. The Al11La3phases exhibit good thermal stability, inhibiting grain boundary migration and dislocation movement during the creep process.