Effect of Copper Alloy Layer Thickness on Microstructure and Properties of Solid-liquid Continuous Cast Cu-Pb-Sn/Steel Lamellar Composite
Author of the article:LIU Shoujie1 , PENG Bo1 , JIE Jinchuan1,2, LI Tingju1,2
Author's Workplace：1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116000, China; 2. Liaoning Key Laboratory of Solidification Control and Digital Preparation Technology, Dalian 116000, China
Key Words：solid-liquid horizontal continuous casting; copper-steel composite; thickness; Pb-rich phase; mechanical properties
Abstract：
Cu-24Pb-2Sn /Steel (C/S) lamellar composites were prepared by solid-liquid horizontal continuous casting. The effects of different copper alloy layer thickness on microstructure and comprehensive properties of C/S laminate composites
were studied.The results show that with the increase of copper layer thickness, the Pb-rich phase in Cu-24Pb-2Sn (wt.%) alloy presents different morphology, such as coarse dendrite network, continuous network, disseminated sphere-like and
abnormal coarsening sphere-like. Meanwhile, the microstructure of steel side changes with the increase of copper layer thickness. The C/S lamellar composites have the best microstructure and comprehensive properties when the thickness of
copper alloy layer is 6 mm.
