Microstructural Evolution and Mechanical Behavior of Lead-Free Silicon Brass Manufactured by Low-Pressure Die Casting

Chao Yang; Wenbing Ye; Yuchuan Yang; Fen Wang; Yanfei Ding; Quanli Zhu; Weiwen Zhang

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Microstructural Evolution and Mechanical Behavior of Lead-Free Silicon Brass Manufactured by Low-Pressure Die Casting

机译：低压压铸制造无铅硅黄铜的微观结构演化与力学行为

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Low-pressure die casting (LPDC) has been widely used to process aluminum and magnesium alloys; however, it has yet to be applied to manufacture brass alloys. This study investigates the microstructural evolution and mechanical behavior of a lead-free CuZnSiAl silicon brass via a variable-controlling approach on the basis of a faucet casting by LPDC. The manufactured silicon brass castings are predominantly composed of bcc β-CuZn(Si, Al) and minor fcc α-Cu(Zn, Si) solid solutions. The silicon brass castings also predominantly exhibit short rod-like or granular α phases, which distinctly differ from the acicular α morphology obtained by conventional gravity casting. The manufactured silicon brass castings which contain finer β grains and short rod-like or granular α phase exhibit superior mechanical properties. Their optimal mechanical properties—elongation of 15.0%, yield strength of 359.8?MPa, and ultimate tensile strength of 598.9?MPa—are far superior to those of the typical lead brass HPb59-1. The results obtained in this study provide insight into the manufacture and design of lead-free silicon brass castings by LDPC.

机译：低压压铸（LPDC）已广泛用于加工铝和镁合金;然而，它尚未适用于制造黄铜合金。本研究通过LPDC的龙头铸造来研究通过可变控制方法通过可变控制方法的无铅Cuznsial硅黄铜的微观结构演化和机械性能。制造的硅黄铜铸件主要由BCCβ-CUZN（Si，Al）和次要FCCα-Cu（Zn，Si）固溶体组成。硅黄铜铸件也主要表现出短棒状或颗粒α相，其与通过传统重力铸造获得的针状α形态明显不同。制造的硅黄铜铸件，其含有更细的β晶粒和短棒状或粒状α相表现出优异的机械性能。它们的最佳机械性能 - 伸长率为15.0％，屈服强度为359.8℃，最终拉伸强度为598.9〜9℃ - 远远优于典型的铅黄铜HPB59-1。本研究中获得的结果为LDPC提供了进入无铅硅黄铜铸件的制造和设计。

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来源
《Journal of Materials Engineering and Performance》 |2018年第10期|共11页
作者
Chao Yang; Wenbing Ye; Yuchuan Yang; Fen Wang; Yanfei Ding; Quanli Zhu; Weiwen Zhang;
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作者单位

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

Guangdong Huayi Plumbing Fittings Industry Co. Ltd;

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of Technology;

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正文语种 eng
中图分类金属学与金属工艺;工程材料学;
关键词
lead-free silicon brass; low-pressure die casting; mechanical properties; microstructures;

机译：无铅硅黄铜;低压压铸;机械性能;微观结构;

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1. Microstructural Evolution and Mechanical Behavior of Lead-Free Silicon Brass Manufactured by Low-Pressure Die Casting [J] . Chao Yang, Wenbing Ye, Yuchuan Yang, Journal of Materials Engineering and Performance . 2018,第10期

机译：低压压铸制造无铅硅黄铜的微观结构演化与力学行为
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Microstructural Evolution and Mechanical Behavior of Lead-Free Silicon Brass Manufactured by Low-Pressure Die Casting

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