Abstract
In the present work, Cu-Pb-Sn and Q235 laminated composite were fabricated by a horizontal semisolid rolling procedure. The interfacial structure, elemental distribution, and properties of the composite were investigated. Finite-element simulation was conducted to analyze the temperature field and solidification process during the semisolid rolling. An appropriate semi-solid region was observed at a pouring temperature of 1598 K in the simulation, which would effectively kept fluidity and avoided casting defects. The experimental results showed that good interface between Cu-Pb-Sn alloy and Q235 steel was achieved by the proposed process at 1598 K, without casting defects or excessive deformation. The Cu and Fe alloys were bonded mainly by the diffusion of Fe into Cu matrix, and a handful of microscopic Pb-rich layer. Fine Pb-rich precipitates were uniformly distributed in the Cu-Pb-Sn alloy, and were considered to be advantageous to the self-lubrication property. The average tensile-shear strength of the interface was higher than 57.68 MPa at a pouring temperature of 1598 K, which fulfilled the requirements for a further extrusion process.
Highlights
Bimetallic laminated materials have received a lot of attention as a result of their excellent properties [1–6]
The results indicate that all the laminated composite specimens failed at the Cu-Pb-Sn alloy side, while the interface remained in a good condition
The results revealed that the average tensile-shear strengths at pouring
Summary
Bimetallic laminated materials have received a lot of attention as a result of their excellent properties [1–6]. Better performance is acquired by the combination of advantages from the component materials. They could be potentially applied in military, automobile, and aerospace industries, to replace some traditional materials. A laminated composite made of Cu and Fe alloys is an ideal material for the bearing bush of an automobile engine. The steel provides the necessary mechanical properties of strength and hardness while the Cu-Pb alloy layer enhances the thermal conductivity and, abrasion resistance at the surface of the composite. By cladding Cu-Pb alloy onto the steel surface, the composite possesses good comprehensive properties derived from both of them
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
