Effect of fine-grained structural Al–12%Si materials on morphologies and crystal defects of eutectic Si in HCC Al–12%Si alloy billets
作者： Jing Zhang , Huashun Yu , Suk Bong Kang , Jae Hyung Cho , Guanghui Min
DOI: 10.1016/J.JALLCOM.2012.05.030
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摘要: Abstract The microstructure of horizontal continuous casting Al–12%Si alloy billets was optimized by fine-grained structural materials the same composition as master alloy. effect on morphologies and crystal defects eutectic Si studied SEM, TEM HRTEM. results show that secondary dendrite arm spacing α-Al decreases change from coarse needle-like to fine fibrous shape with 30% addition. Furthermore, nature distribution inside crystals are quite different before. Two oblique crossing sets twins present in modified Si. In addition, HRTEM reveal growth mechanism transforms step twin plane re-entrant due addition materials.
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sci-hub.se 参考文章(27)
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
Manjit Singh, Rajendra Kumar, Structure of liquid aluminium-silicon alloys Journal of Materials Science. ,vol. 8, pp. 317- 323 ,(1973) , 10.1007/BF00550150
Iwona Nowak, Jacek Smolka, Andrzej J. Nowak, An effective 3-D inverse procedure to retrieve cooling conditions in an aluminium alloy continuous casting problem Applied Thermal Engineering. ,vol. 30, pp. 1140- 1151 ,(2010) , 10.1016/J.APPLTHERMALENG.2010.01.029
Jing Zhang, Suk Bong Kang, Huashun Yu, Jae Hyung Cho, Guanghui Min, Vladimir Y. Stetsenko, Effect of fine-grained raw material addition on microstructure refinement and tensile properties in horizontal continuous casting Al–12%Si alloy billets Materials & Design. ,vol. 32, pp. 3566- 3569 ,(2011) , 10.1016/J.MATDES.2011.01.013
Sang-Soo Shin, Eok-Soo Kim, Gil-Yong Yeom, Jae-Chul Lee, Modification effect of Sr on the microstructures and mechanical properties of Al–10.5Si–2.0Cu recycled alloy for die casting Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 532, pp. 151- 157 ,(2012) , 10.1016/J.MSEA.2011.10.076
K Nogita, A.K Dahle, Eutectic solidification in hypoeutectic Al–Si alloys: electron backscatter diffraction analysis Materials Characterization. ,vol. 46, pp. 305- 310 ,(2001) , 10.1016/S1044-5803(00)00109-1
Zhongwei Chen, Yimin Lei, Haifang Zhang, Structure and properties of nanostructured A357 alloy produced by melt spinning compared with direct chill ingot Journal of Alloys and Compounds. ,vol. 509, pp. 7473- 7477 ,(2011) , 10.1016/J.JALLCOM.2011.04.082
Gang Liu, Guodong Li, Anhui Cai, Zhaoke Chen, The influence of Strontium addition on wear properties of Al–20 wt% Si alloys under dry reciprocating sliding condition Materials & Design. ,vol. 32, pp. 121- 126 ,(2011) , 10.1016/J.MATDES.2010.06.027
C.M. Cepeda-Jiménez, J.M. García-Infanta, A.P. Zhilyaev, O.A. Ruano, F. Carreño, Influence of the thermal treatment on the deformation-induced precipitation of a hypoeutectic Al–7 wt% Si casting alloy deformed by high-pressure torsion Journal of Alloys and Compounds. ,vol. 509, pp. 636- 643 ,(2011) , 10.1016/J.JALLCOM.2010.09.122