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铜合金层厚度对固液连铸Cu-Pb-Sn/钢背层状复合材料组织及性能的影响
Effect of Copper Alloy Layer Thickness on Microstructure and Properties of Solid-liquid Continuous Cast Cu-Pb-Sn/Steel Lamellar Composite
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- DOI:
- 作者:
- 刘守杰 1 ，彭 博 1 ，接金川 1，2 ，李廷举 1，2
LIU Shoujie1 , PENG Bo1 , JIE Jinchuan1,2, LI Tingju1,2
- 作者单位:
- 1. 大连理工大学 材料科学与工程学院，辽宁 大连 116000；2. 辽宁省凝固控制与数字化制备技术重点实验室，辽宁 大 连 116000
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
- 关键词:
- 固-液水平连续铸造；铜钢复合；厚度；富铅相；力学性能
solid-liquid horizontal continuous casting; copper-steel composite; thickness; Pb-rich phase; mechanical properties
- 摘要:
- 通过采用固 - 液水平连续铸造技术制备了 Cu-24Pb-2Sn/Steel（C/S）层状复合材料，研究了不同铜合金层厚
度对 C/S 复层材料微观组织和综合性能的影响。 结果表明，随着铜层厚度的增加，Cu-24Pb-2Sn(wt.%)合金中富 Pb 相分
别呈现出粗大枝晶网状、连续网状、弥散球棒状以及异常粗化球棒状等的不同形态。 同时，钢侧微观组织形貌也随铜层
厚度增加产生相应变化。 铜合金层厚度为 6 mm 时 C/S 层状复合材料具有最佳的微观组织和综合性能。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 compositeswere 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 andabnormal 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 ofcopper alloy layer is 6 mm.