Study on the property of AI-Sn-Pb and its bush material clad with steel strip by liquid-solid bond rolling

Abstract

AISn8Pb2Si25Cu0.8Cr0.2(ASP) is a new bush material with high performance, but its bad lasticity limits its application. By studying the effect of silicon content on the performance of this bush material, it was found that the alloy performance and the distribution of tin and lead were affected by the silicon content. When the silicon content was 2.5%,most of the silicon recipitated along the grain boundary, and most of the lead and tin located along the grain boundary continuously, this resulted in the decrease of the bush material's performance. When the silicon content decreased to 1.0%,it distributed more uniformly, the tin and lead phases were spheroidized and became discontinuous, the performance of ASP material was then greatly increased.

Keywords

• bush material
• aluminum-tin-lead alloy
• spheroidization