铜与钢的连接

1、LOGO铜钢异种材料连接的研究进展铜钢异种材料连接的研究进展主讲： 孟国奇LOGO主要内容主要内容1.铜钢的物理性能铜钢的物理性能2.铜钢的熔化焊铜钢的熔化焊3.铜钢的压力焊铜钢的压力焊4.铜钢的钎焊铜钢的钎焊LOGO1.铜钢的物理性能铜钢的物理性能铜与钢的原子半径、晶格类型、晶格常数及原子外层电铜与钢的原子半径、晶格类型、晶格常数及原子外层电子数目等都比较接近，且铜与铁属于在液态时无限固溶，子数目等都比较接近，且铜与铁属于在液态时无限固溶，在固态下，虽为有限固溶，但并不形成脆性金属间化合在固态下，虽为有限固溶，但并不形成脆性金属间化合物，而是以物，而是以(+)的双相组织形式存在，这是二者实现

2、焊的双相组织形式存在，这是二者实现焊接的可行性。接的可行性。LOGO2.铜钢的熔化焊铜钢的熔化焊 2.1 Gas tungsten arc welding of CP-copper to304 stainless steel using different filler materialsIt was concluded that copper is a new and good candidate for gas tungsten arc welding of copper to 304 stainless steel. From“Gas tungsten arc welding of CP

3、-copper to304 stainless steel using different filler materials”Copper was welded to 304 stainless steel by GTA welding process using Ni Cu Fe, 304 stainless steel and Cu filler materials.LOGO2.2铜钢的压力焊铜钢的压力焊LOGO From“Diffusion bonding of alumina dispersion-strengthened copper to 316 stainless steel w

4、ith interlayer metals”3.铜钢的压力焊铜钢的压力焊 3.1 Diffusion bonding of alumina dispersion-strengthened copper to 316 stainless steel with interlayer metalsDiffusion bonding of alumina dispersion-strengthened copper (DS Cu) to 316 stainless steel was carried out with interlayer metals such as Au, Cu and Ni fo

5、il in order to investigate the influence of the interlayer metals and bonding conditions on strength of the joints.LOGOThe tensile strength of joints with the Au interlayer were superior to those with the Cu and Ni interlayer metals and similar to that of DS Cu base metal. The tensile strength of jo

6、ints with the Cu and Ni interlayer were smaller than that of the DS Cu to 316 stainless steel diffusion bonding joint.The Charpy absorbed energy of the joint SAC2 increased up to 50% of the DS-Cu, while that of the immediate diffusion bonding joint was only 20%. From“Diffusion bonding of alumina dis

7、persion-strengthened copper to 316 stainless steel with interlayer metals”3.1 Diffusion bonding of alumina dispersion-strengthened copper to 316 stainless steel with interlayer metalsLOGOThe microstructure of the Au interlayer joint exhibited intermetallic compounds B, Fe and Cr in the Au interlayer

8、. For the Ni interlayer joint, Kirkendall voids were formed at the DS Cu near the interface where the specimen fractured. From“Diffusion bonding of alumina dispersion-strengthened copper to 316 stainless steel with interlayer metals”3.1 Diffusion bonding of alumina dispersion-strengthened copper to

9、316 stainless steel with interlayer metalsLOGO3.2白铜白铜-钢双金属管的瞬间液相扩散连接钢双金属管的瞬间液相扩散连接在箱式电阻炉中对双金属管坯进行扩散连接,温度为9501 080,时间为0.51 h。在9501 000之间扩散连接时,黄铜中间层熔化,填充缝隙并与固相接触,钢、黄铜、白铜中的各元素相互扩散,可使钢/白铜之间实现良好的冶金结合。 From“白铜/钢双金属管的瞬间液相扩散连接”LOGO3.3 Effect of heat treatment on bonding interface in explosive welded copper/

10、stainless steelThe thickness of diffusion layer was increased with heat treat-ment time. From“Effect of heat treatment on bonding interface in explosive welded copper/stainless steel”Due to selection of welding parameters properly, there was no melting and intermetallic zone.The tensile strength and

11、 elongation were increased by post heat treatment.The interface of sample with and without the post heat treat-ment was exhibited ductile and brittle fracture, respectively.LOGO3.4 Q235低碳钢与紫铜板的搅拌摩擦焊低碳钢与紫铜板的搅拌摩擦焊搅搅 拌拌 头头 旋旋 转转 速速 度度 为为475r/min、焊接速、焊接速度为度为 47.5 mm/min 时能获得无缺陷的铜时能获得无缺陷的铜/ 钢钢 FSW 接头。接头。工艺参数对铜/钢搅拌摩擦焊焊缝成形的影响 刘鸽平