Transactions of Materials and Heat Treatment

Title：Influence of multi-directional forging and annealing on mechanical properties for tin bronze alloy

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ClassificationCode：TG319；TG166.2

year,vol(issue):pagenumber：2022,47(7):9-12

Abstract：

In order to explore the manufacturing method of tin bronze alloy with good strength and plasticity, three kinds of tin bronze alloy samples of coarse grain, multi-directional forging and multi-directional forging and annealing were prepared, and their microstructures, hardnesses, tensile properties and tensile fracture morphologies were tested by means of metallographic observation, microhardness test, unidirectional tensile test and scanning electron microscope morphology observation. The results show that the grains of coarse grain tin bronze alloy are obviously refined after multi-directional forging, and the grains grow slightly after the subsequent annealing treatment. The hardness, tensile strength and elongation of tin bronze alloy samples by multi-directional forging and annealing are between those of the other two samples. However, their products of strength and elongation are about 114% and 195% of the coarse grain and multi-directional forging tin bronze alloy samples, respectively, and the tensile fracture morphologies show ductile fracture characteristics. Thus, the process of multi-directional forging and subsequent annealing process can produce the tin bronze alloy with good strength and plasticity.

Funds：

国家自然科学基金资助项目(51561003)

作者简介：牛成麟(1997-),男,硕士研究生 E-mail：1316606850@qq.com 通信作者：韦春华(1984-),男,博士,讲师 E-mail：weichunhua@gxu.edu.cn

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