TY - JOUR
T1 - Electrical current induced mechanism in microstructure and nano-indention of Al-Zn-Mg-Cu (AZMC) Al alloy thin film
AU - Hung, Fei Yi
AU - Liao, Jiunn Der
AU - Lui, Truan Sheng
AU - Chen, Li Hui
N1 - Funding Information:
The authors are grateful to National Cheng Kung University , Center for Micro/Nano Science and Technology (NCKU Project of Promoting Academic Excellence & Developing World Class Research Center: D99-2700) NSC 99-2622-E-006-132 for the financial support.
PY - 2011/11
Y1 - 2011/11
N2 - In this study, the microstructural variation and nano-indention of Al-5.7Zn-2.4Mg-1.5Cu (AZMC) thin film was investigated using DC electrical current at a density of 1000 A/cm2. The results show that microstructural changes due to the electrical current involved both the solid solubility effect and enhanced diffusion. The electrical current drove the Al atoms and Cu atoms of the matrix from the cathode to the anode. After electrical current testing, precipitation phases (Al2Cu; CuMgAl2) had decomposed into the cathode matrix and MgZn phases had grown in the anode zones. Meanwhile, the current also caused the hardness of the thin film to decrease and affected both the texture and dynamic strain mechanism of nano-indention.
AB - In this study, the microstructural variation and nano-indention of Al-5.7Zn-2.4Mg-1.5Cu (AZMC) thin film was investigated using DC electrical current at a density of 1000 A/cm2. The results show that microstructural changes due to the electrical current involved both the solid solubility effect and enhanced diffusion. The electrical current drove the Al atoms and Cu atoms of the matrix from the cathode to the anode. After electrical current testing, precipitation phases (Al2Cu; CuMgAl2) had decomposed into the cathode matrix and MgZn phases had grown in the anode zones. Meanwhile, the current also caused the hardness of the thin film to decrease and affected both the texture and dynamic strain mechanism of nano-indention.
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U2 - 10.1016/j.cap.2011.03.053
DO - 10.1016/j.cap.2011.03.053
M3 - Article
AN - SCOPUS:80052272543
SN - 1567-1739
VL - 11
SP - 1269
EP - 1273
JO - Current Applied Physics
JF - Current Applied Physics
IS - 6
ER -