铸造硅黄铜的热处理工艺研究
Study on Heat Treatment Technology for Casting Silicon Brass
周世杰
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作者单位：成都理工大学 材料与化学化工学院, 四川 成都 610059
中文关键字：硅黄铜； 热处理； 显微组织； 性能
英文关键字：silicon brass; heat treatment; microstructure; property
中文摘要：对自行熔炼的60Cu-Zn-Si硅黄铜，进行不同温度保温1 h然后水冷的热处理，分析比较了不同热处理温度下得到的试样显微组织和相组成，并进行了硬度测试。结果表明，合金热处理后的硬度值为40.8～69.7 HB，400 ℃保温的试样具有较高的硬度(69.7 HB)和良好的耐磨性，其显微组织为晶粒细小的α相，XRD显示为CuZn固溶体，晶粒尺寸约为10 μm，第二相细小弥散分布。
英文摘要：The heat treatment technology for self-melting silicon brass 60Cu-Zn-Si alloy was studied by analyzing the relationship among heat treatment, microstructure and property of 60Cu-Zn-Si alloy. The alloy was heat-treated at different temperature for 1 h and quenched in water. The results show that the hardness of 60Cu-Zn-Si alloy is 40.8～69.7 HB, and the hardness is 69.7 HB at 400 ℃ treatment. The microstructure of 60Cu-Zn-Si treated at 400 ℃ for 1 h is uniform; grain size is fine and the small strengthening particle (α phase) uniformly distributes in the matrix. XRD results show that the α phase is CuZn solid solution with 10 μm in grain size.