| 焊接电流对Q4Sn-6Zn青铜焊缝力学性能和颜色的影响 |
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| 引用本文： | 俞梦冰,刘新宽,刘平,罗会艳,陈小红,梅品修,李伟,何代华.焊接电流对Q4Sn-6Zn青铜焊缝力学性能和颜色的影响[J].上海理工大学学报,2019,40(1):6-12. |
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| 作者姓名： | 俞梦冰 刘新宽 刘平 罗会艳 陈小红 梅品修 李伟 何代华 |
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| 作者单位： | 上海理工大学 材料科学与工程学院, 上海 200093,上海理工大学 材料科学与工程学院, 上海 200093,上海理工大学 材料科学与工程学院, 上海 200093,上海船厂铜艺术品制造厂, 上海 200120,上海理工大学 材料科学与工程学院, 上海 200093,上海咏凌合金材料有限公司, 上海 201802,上海理工大学 材料科学与工程学院, 上海 200093,上海理工大学 材料科学与工程学院, 上海 200093 |
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| 基金项目： | 先进金属电力材料重点实验室项目（17ZR1419600）；上海市科学技术委员会重点项目（11441900501） |
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| 摘 要： | 采用偏光显微镜、紫外可见光光度计、3NH色差仪、显微硬度计等仪器，研究了不同焊接电流对Q4Sn-6Zn青铜焊缝力学性能和颜色的影响。结果表明：当焊接电流为110 和130 A时，由于焊接热输入量的不足，焊缝出现未焊透现象，焊接质量差，无法满足使用要求；当焊接电流达到170和190 A时，由于电流太大，焊接热输入量过大，晶粒长大倾向变强，呈现明显粗大的柱状，分布具有较强的方向性，导致焊接接头力学性能下降；当焊接电流为150 A时，焊缝的力学性能最优。通过研究分析不同焊接电流焊接的着色及未着色焊缝与母材反射率和CIE1976L*a*b*数值发现，焊接电流为150 A时焊缝与母材色差值最小，颜色与母材最接近。
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| 关 键 词： | Q4Sn-6Zn青铜|焊接电流|色差|显微组织|力学性能 |
| 收稿时间： | 2018/5/30 0:00:00 |
Effects of Welding Currents on the Mechanical Properties and Colors of Q4Sn-6Zn Bronze Welding Joint |
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| YU Mengbing,LIU Xinkuan,LIU Ping,LUO Huiyan,CHEN Xiaohong,MEI Pinxiu,LI Wei and HE Daihua.Effects of Welding Currents on the Mechanical Properties and Colors of Q4Sn-6Zn Bronze Welding Joint[J].Journal of University of Shanghai For Science and Technology,2019,40(1):6-12. |
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| Authors: | YU Mengbing LIU Xinkuan LIU Ping LUO Huiyan CHEN Xiaohong MEI Pinxiu LI Wei and HE Daihua |
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| Institution: | School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,Shanghai Shipyard Copper Art Factory, Shanghai 200120, China,School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China,Shanghai Yong-ling Alloy Material Co., Ltd., Shanghai 201802, China,School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | The effects of different welding currents on the mechanical properties and colors of welding joints in Q4Sn-6Zn bronze were investigated by polarizing microscope, UV-vis spectrophotometer, 3NH colorimeter, microhardness tester and so on. The results show that when the welding current is only 110 and 130 A, the lack of penetration appears due to the insufficiency of welding heat input, and the poor welding quality cannot meet the requirements for the usages. When the welding current reaches 170 and 190 A, the large current leads to the great welding heat input, which makes the grain show strong growth trends and obviously large columnar shape with strong distribution directionality, and then causes the decrease in the mechanical properties of welded joints. When the welding current is 150 A, the weld joint shows the best mechanical properties. By analyzing the reflectivity and CIE1976L*a*b* values of colored and unpainted joints as well as the base metal under different welding currents, it is found that the weld joint under the welding current of 150 A shows the smallest color difference and the closest color with the base metal. |
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| Keywords: | Q4Sn-6Zn bronze|welding current|color difference|microstructure|mechanical property |
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