Phase equilibria of the ternary Al-Cu-Ni system and interfacial reactions of related systems at 800 °C
Phase equilibria of the ternary Al-Cu-Ni system and interfacial reactions of related systems at 800 °C
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800℃三元Al-Cu-Ni体系的相平衡及相关体系的界面反应
DOI：
10.1007/s11661-003-0322-7
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Jen
中科院分区：
文献类型：
--
作者：
Chao;Sinn;Chia;Jen
制备了一系列不同成分的Al-Cu-Ni合金，并在800 °C下退火。通过金相、X射线衍射（XRD）分析和电子探针显微分析研究了平衡相。根据这些实验结果和三元二元系的相关系知识，确定了Al-Cu-Ni三元系在800 °C时的等温截面。AlNi_3、AlNi和Al_3Ni_2三相均具有很高的三元固溶度，尤其是AlNi相，几乎达到二元Al-Cu侧。然而，没有连续的固溶体之间形成的AlNi相和任何的二元Al-Cu相。采用反应偶技术研究了Al/Ni、Al/Cu、Al-Cu/Ni和Al-Ni/Cu在800 °C时的界面反应。结果表明，Al/Ni偶中形成Al 3 Ni和Al 3 Ni 2相，Al/Cu偶中形成β-AlCu 4、γ1-Al 4Cu 9和γ 2-Al 2Cu 3相。至于在Al-2的结果。% Ni/Cu，Al-5 at. %的Ni/Cu和Al-2at. % Cu/Ni，Al-4.5at. pct Cu/Ni和Al-6 at. pct Cu/Ni分别与二元Al/Cu和Al/Ni电偶中的那些相似。在Al-7.5中发现不同的反应路径。pct Cu/Ni偶，形成AlNi固溶体层代替Al 3 Ni和Al 3 Ni 2相。
A series of Al-Cu-Ni alloys of various compositions were made and annealed at 800 °C. The equilibrium phases were studied by metallography, X-ray diffraction (XRD) analysis, and electron probe microanalysis. The isothermal section of the ternary Al-Cu-Ni system at 800 °C was then determined based on these experimental results and the available phase relationship knowledge of the three constituent binary systems. No ternary compound was found. All three phases, AlNi3, AlNi, and Al3Ni2, have very high ternary solubility, especially the AlNi phase, which almost reaches the binary Al-Cu side. However, no continuous solid solution was formed between the AlNi phase and any of the binary Al-Cu phases. Interfacial reactions of Al/Ni, Al/Cu, Al-Cu/Ni, and Al-Ni/Cu at 800 °C were investigated by using reaction couple techniques. The results showed that Al3Ni and Al3Ni2phases were formed in the Al/Ni couples;β-AlCu4,γ1-Al4Cu9, andɛ2-Al2Cu3phases were formed in the Al/Cu couples. As for the results in the Al-2 at. pct Ni/Cu, Al-5 at. pct Ni/Cu, and Al-2 at. pct Cu/Ni, Al-4.5 at. pct Cu/Ni, and Al-6 at. pct Cu/Ni were similar to those in the binary Al/Cu and Al/Ni couples, respectively. A different reaction path was found in the Al-7.5 at. pct Cu/Ni couples, and an AlNi solid solution layer was formed instead of the Al3Ni and Al3Ni2phases.