结构钢与锡青铜异种材料扩散焊
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摘要
采用真空扩散焊的方法实现了30Cr3MoA结构钢与ZQSn10-2-3锡青铜的连接。测试了不同工艺下接头的抗拉强度,并通过扫描电子显微镜(SEM)和X射线能谱分析(EDS)观察了接头的微观组织成分。结果表明,在820℃时所得扩散焊接头质量最佳,该温度下提高压力和延长保温时间都能提高接头强度,820℃/1 h/10 MPa工艺下所得接头抗拉强度达294 MPa,拉伸试样均断于锡青铜母材,其焊缝为无缺陷的冶金结合,Cu元素和Fe元素互扩散层厚度约为3μm。
The joining of 30Cr3MoA structural steel to ZQSn10-2-3 tin bronze was realized by vacuum diffusion welding. The tensile strength of the joints at different processes were tested,and the microstructure of the joints was observed by scanning electron microscopy( SEM) and energy dispersive X-ray spectroscopy( EDS). The results show that the quality of diffusion bonded joint is the best at 820 ℃. The strength of joint can be increased by increasing pressure and prolonging holding time. The tensile strength of joint can reach up to 294 MPa at 820 ℃/1 h/10 MPa process. The tensile specimens are all broken in tin bronze base metal. The weld seam is defect-free metallurgical bonding and the interdiffusion layer between Cu and Fe elements is about 3 μm in thickness.
The joining of 30Cr3MoA structural steel to ZQSn10-2-3 tin bronze was realized by vacuum diffusion welding. The tensile strength of the joints at different processes were tested,and the microstructure of the joints was observed by scanning electron microscopy( SEM) and energy dispersive X-ray spectroscopy( EDS). The results show that the quality of diffusion bonded joint is the best at 820 ℃. The strength of joint can be increased by increasing pressure and prolonging holding time. The tensile strength of joint can reach up to 294 MPa at 820 ℃/1 h/10 MPa process. The tensile specimens are all broken in tin bronze base metal. The weld seam is defect-free metallurgical bonding and the interdiffusion layer between Cu and Fe elements is about 3 μm in thickness.
引文
[1]张琳娜.柱塞泵转子毛坯双金属成形工艺方案和模具研究[D].贵阳:贵州大学硕士学位论文,2010.
[2]侯金保,董宝明,王凯.锡青铜-合金钢扩散焊技术研究[C].天津:第九次全国焊接会议论文集,1999:180-183.
[3]赵赫,曹健,冯吉才. TC4/ZQSn10-2-3直接扩散连接[J].焊接学报,2010,31(2):60-62.
[4]张军.转子真空扩散焊工艺研究[J].热加工工艺,2015,44(3):205-206.
[5]吴涛,田鹏.铜与钢的异种材料扩散焊接技术[J].黑龙江冶金,2007(4):30-32.
[6]王飞,田玉清.铜合金-钢双金属柱塞液压泵转子材料的研制[J].粉末冶金工业,2013,23(3):56-60.
[2]侯金保,董宝明,王凯.锡青铜-合金钢扩散焊技术研究[C].天津:第九次全国焊接会议论文集,1999:180-183.
[3]赵赫,曹健,冯吉才. TC4/ZQSn10-2-3直接扩散连接[J].焊接学报,2010,31(2):60-62.
[4]张军.转子真空扩散焊工艺研究[J].热加工工艺,2015,44(3):205-206.
[5]吴涛,田鹏.铜与钢的异种材料扩散焊接技术[J].黑龙江冶金,2007(4):30-32.
[6]王飞,田玉清.铜合金-钢双金属柱塞液压泵转子材料的研制[J].粉末冶金工业,2013,23(3):56-60.