Microstructures and mechanical properties of friction stir welded dissimilar copper/brass joints
Microstructures and mechanical properties of friction stir welded dissimilar copper/brass joints
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DOI：
10.1002/mawe.200800278
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发表时间：
2008-08
影响因子：
1.1
通讯作者：
C. Meran;V. Kovan
中科院分区：
文献类型：
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作者：
C. Meran;V. Kovan
对铜/黄铜异种材料搅拌摩擦焊接接头的组织和力学性能进行了试验研究。在获得的最佳刀具转速和最佳刀具横移速度条件下，研究了刀具轴向力对焊接质量的影响。异种铜/黄铜搅拌摩擦焊工具由材料号为1.2379的X155 CrMoV 12 -1冷作工具钢制成。通过焊接表面检查、显微组织分析、显微硬度测量和拉伸试验，对搅拌摩擦焊焊接质量进行了研究。实验研究表明，在预热和焊接过程中保持恒定的轴向工具力非常重要。因此，通过在预热期间使用2.5-3 kN的轴向工具力和在焊接过程期间使用5.5kN的轴向工具力，可以获得具有良好外观和较高机械强度的铜/黄铜异种接头。
In this study, an experimental investigation has been carried out on microstructure and mechanical properties of friction stir welded copper/brass dissimilar joints. Effect of axial tool force to welding quality has been investigated under obtained optimal tool rotation rate and tool traverse speed conditions. The tool for the dissimilar copper/brass friction stir welding manufactured from X155CrMoV12–1 cold work tool steel with material number of 1.2379. The friction stir welding quality was investigated by welding surface inspections, microstructural studies, micro hardness measurements and tensile tests. The experimental studies have shown that constant axial tool force during pre‐heating and during welding process are very important. As a result, by using 2.5–3 kN of axial tool force during pre‐heating and 5.5 kN of axial tool force during welding process, copper/brass dissimilar joints with well appearance and higher mechanical strength can be obtained.