Precipitation behaviors of cubic and tetragonal Zr-rich phase in Al-(Si-)Zr alloys
Precipitation behaviors of cubic and tetragonal Zr-rich phase in Al-(Si-)Zr alloys
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Al-(Si-)Zr合金中立方和四方富Zr相的析出行为
DOI：
10.1016/j.jallcom.2016.02.236
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发表时间：
2016-07-25
影响因子：
6.2
通讯作者：
Ringer, Simon
中科院分区：
文献类型：
--
作者：
Gao, Tong;Ceguerra, Anna;Ringer, Simon
采用高分辨率透射电子显微镜和原子探针研究了二元Al-0.5Zr和三元Al-3Si-0.5Zr合金中富Zr相的析出行为。合金在525℃时效24 h后，Al-0.5Zr合金中的析出物被鉴定为L1(2)-ZrAl3，与Al基体呈共格关系。而在Al-3Si-0.5Zr合金中，析出物为含Si的D0(23)-Zr(Al,Si)(3)，与Al呈近似90度反转的立方体对立方体的取向关系。认为Si加速了D0(23)-Zr(Al,Si)(3)的析出。 (C) 2016 Elsevier B.V. 保留所有权利。
The precipitation behaviors of Zr-rich phase in binary Al-0.5Zr and ternary Al-3Si-0.5Zr alloys were investigated by high resolution transmission electron microscopy and atom probe. After the alloys were aged at 525 degrees C for 24 h, the precipitates in Al-0.5Zr alloy are identified as L1(2)-ZrAl3, performing a coherent relationship with the Al matrix. While in Al-3Si-0.5Zr alloy, the precipitates are Si-containing D0(23)-Zr(Al,Si)(3), which has an approximate 90 degrees reversed cube-on-cube orientation relationship with Al. It is regarded that Si accelerates the precipitation of D0(23)-Zr(AI,Si)(3). (C) 2016 Elsevier B.V. All rights reserved.