Effect of Eu addition on the microstructures and mechanical properties of A356 aluminum alloys
作者： Feng Mao , Guangyuan Yan , Zhenjing Xuan , Zhiqiang Cao , Tongmin Wang
DOI: 10.1016/J.JALLCOM.2015.06.266
关键词:
摘要: Abstract The effect of Eu additions (0, 0.02, 0.04, 0.06, 0.08 and 0.1 wt.%) T6 heat treatment on the microstructures mechanical properties A356 alloy have been investigated in present work. Microstructures as-cast treated samples were examined by optical microscopy (OM) scanning electron (SEM). It was found that 0.1%Eu modified eutectic Si from a coarse plate-like form to fully fine fibrous one with better uniform distribution. encouraged spheroidization particles. Correlating samples, achieved likewise full modification particles lowest mean area aspect ratio. In addition, small Eu-rich intermetallics both alloy. cooling curves alloys showed increasing addition resulted nucleation undercooling growth undercooling. However, recalescence (T G − T Min ) increased initial Eu, while it remained relatively stable for (above 0.06%). quenching experiment indicated large number grains located at or close tips aluminum dendrites jagged solid–liquid interface unmodified alloy, very few formed interdendritic region smooth An optimal combination UTS (265 MPa) EI (14.7%) combined treatment.
sci-hub.se 参考文章(34)
Hongxu Qiu, Hong Yan, Zhi Hu, Effect of samarium (Sm) addition on the microstructures and mechanical properties of Al–7Si–0.7Mg alloys Journal of Alloys and Compounds. ,vol. 567, pp. 77- 81 ,(2013) , 10.1016/J.JALLCOM.2013.03.050
K. Nogita, H. Yasuda, K. Yoshida, K. Uesugi, A. Takeuchi, Y. Suzuki, A.K. Dahle, Determination of strontium segregation in modified hypoeutectic Al–Si alloy by micro X-ray fluorescence analysis Scripta Materialia. ,vol. 55, pp. 787- 790 ,(2006) , 10.1016/J.SCRIPTAMAT.2006.07.029
P. Srirangam, M.J. Kramer, S. Shankar, Effect of strontium on liquid structure of Al–Si hypoeutectic alloys using high-energy X-ray diffraction Acta Materialia. ,vol. 59, pp. 503- 513 ,(2011) , 10.1016/J.ACTAMAT.2010.09.050
Saeed Farahany, Mohd Hasbullah Idris, Ali Ourdjini, Evaluations of antimony and strontium interaction in an Al–Si–Cu–Zn die cast alloy Thermochimica Acta. ,vol. 584, pp. 72- 78 ,(2014) , 10.1016/J.TCA.2014.04.001
E Ogris, A Wahlen, H Lüchinger, P.J Uggowitzer, On the silicon spheroidization in Al-Si alloys Journal of Light Metals. ,vol. 2, pp. 263- 269 ,(2002) , 10.1016/S1471-5317(03)00010-5
Zunjie Wei, Bao Li, Hongwei Wang, Jinchuan Jie, Effects of yttrium and heat treatment on the microstructure and tensile properties of Al–7.5Si–0.5Mg alloy Materials & Design. ,vol. 32, pp. 1617- 1622 ,(2011) , 10.1016/J.MATDES.2010.08.040
JH Li, Jenifer Barrirero, M Engstler, H Aboulfadl, F Mücklich, Peter Schumacher, None, Nucleation and Growth of Eutectic Si in Al-Si Alloys with Na Addition Metallurgical and Materials Transactions A. ,vol. 46, pp. 1300- 1311 ,(2015) , 10.1007/S11661-014-2702-6
Y.H. Cho, H.-C. Lee, K.H. Oh, A.K. Dahle, Effect of Strontium and Phosphorus on Eutectic Al-Si Nucleation and Formation of β -Al 5 FeSi in Hypoeutectic Al-Si Foundry Alloys Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 39, pp. 2435- 2448 ,(2008) , 10.1007/S11661-008-9580-8
JH Li, MZ Zarif, M Albu, BJ McKay, Ferdinand Hofer, Peter Schumacher, None, Nucleation kinetics of entrained eutectic Si in Al–5Si alloys Acta Materialia. ,vol. 72, pp. 80- 98 ,(2014) , 10.1016/J.ACTAMAT.2014.03.030
X. Jian, T.T. Meek, Q. Han, Refinement of eutectic silicon phase of aluminum A356 alloy using high-intensity ultrasonic vibration Scripta Materialia. ,vol. 54, pp. 893- 896 ,(2006) , 10.1016/J.SCRIPTAMAT.2005.11.004