铋含量对无铅铋黄铜性能的影响

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Effect of Bi Content on Microstructure and Mechanical Properties of Lead-Free Brass Alloy

1. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China;
2. Laboratory for Metallurgy and Pressure Processing, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用扫描电子显微镜(SEM)、能谱分析(EDS)以及X射线衍射(XRD)等分析方法研究不同含量的铋对无铅铋黄铜微观组织、力学性能和切削性能的影响。结果表明,铋黄铜主要由板条状α和β相组成,有少量的富铋颗粒在α相和β相的相界上以及β相中弥散析出,随着合金中铋含量的增加,富铋颗粒的含量增加。力学性能测试结果表明,随着铋含量的增加,合金的布氏硬度逐渐增加,抗拉强度和屈服强度略有提高,而延伸率和断面收缩率逐渐下降。切削性能测试表明,随着铋含量的增加,合金的切削性能逐渐提高,铋含量达到0.7%,切削性能接近于铅黄铜。
- 无铅黄铜 /
- SEM /
- XRD /
- 力学性能 /
- 切削性能
Abstract: Effect of Bi content on microstructure,mechanical properties and cutting property of lead-free brass alloy has been studied.Result of SEM,EDS and XRD shows that the alloy is comprised with α phase and β phase,some part of Bi exists in β phase and phase boundaries.Brinell hardness,tensile strength,yield strength and cutting property are promoting,while elongation percentage and percentage reduction of area are decreasing as content of Bi is increasing.Alloy 2# with 0.7% Bi is with appropriate mechanical properties as Pb-brasses.
- Lead-free brass alloy /
- SEM /
- XRD /
- Mechanical properties /
- Cutting property