Author(s): YU Le, JIA Cheng-chang
Pages: 2169-2175
Year: 2013 Issue:  8
Journal: The Chinese Journal of Nonferrous Metals
Keyword:  intermetallic; mechanical alloying; dispersion strengthening; solid solution; friction; wear;
Abstract: The Fe-Al solid solution powder of Al diffused in the Fe matrix was prepared by high energy ball milling. Alloy of tin-bronze was dispersion strengthened by Fe-Al solid solution powder. Fe-Al solid solution powder changes into Fe 3 Al intermetallic during sintering process. The results show that the hardness, crushing strength and friction performance of strengthened alloys are significantly improved, compared with the traditional tin-bronze. The optimum content of the solid-solution powder is 3%(mass fraction), the hardness and strength of alloys are best, which increase by 57%and 127%, respectively, the friction coefficient decreases from 0.38 to 0.27, the wear less decreases from 0.30%to 0.07%.