Transactions of Materials and Heat Treatment

Title：Influence of deformation temperature on microstructure and property of wear-resisting tin bronze alloy prepared by inverse extrusion process

Authors： Wei Wei Zhang Wenqiong

Unit： Ningde Vocational and Technical College Xiamen University of Tan Kah Kee

KeyWords： Cu-Sn-Pb-Ni tin bronze inverse extrusion process deformation temperature density hardness microstructure

ClassificationCode：TG146.1

year,vol(issue):pagenumber：2017,42(8):62-65

Abstract：

For the high-tin wear-resisting Cu-Sn-Pb-Ni alloy with the tin content 9%-11%, the inverse extrusion experiments were conducted under different technological conditions within 800-950 ℃, and the density, hardness and strength of alloy were tested. Then, the alloy microstructure was analyzed under different technological conditions, and the properties and microstructure of alloy prepared by traditional melt casting method were compared. The results show that the density and hardness of Cu-Sn-Pb-Ni alloy prepared by traditional melt casting method are 8.8893 g·cm-3 and 116 HB separately, and the density and hardness are increased after inverse extrusion at different temperatures. Especially after inverse extrusion at 900 ℃, the density and hardness reach the maximum values 9.0409 g·cm-3 and 139 HB respectively. Compared with the as-cast, microstructure is mainly obvious dendrite structure which is α solid solution and eutectoid（α+δ）, and microstructure of alloy grain is obviously refined and densed after extrusion. Within the range of experiments, the best inverse extrusion temperature of alloy is 900 ℃.

Funds：

福建省教育厅基金项目（JA15870）

魏炜（1980-），男，硕士，讲师

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