Diffusion Welding of Titanium Alloy and Stainless Steel With Electroplated Nanometer Ni Interlayer
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摘要: 采用电镀纳米镍中间层,对钛合金TA17与不锈钢OCr18Ni9Ti进行扩散焊焊接试验研究。利用能谱对焊接接头的元素分布进行分析,结果表明:采用电镀纳米镍层作中间层能有效防止钛合金中的Ti、V、Al等元素与不锈钢中Fe、Ni、C等元素的相互扩散和迁移,很好地抑制了金属间化合物TiFe、TiFe2及脆性相TiC的形成。通过计算接头处扩散层的激活能可知纳米镍的扩散性能比镍箔的好。Abstract: The diffusion welding of titanium alloy TA17 and stainless steel 0Cr18Ni9Ti with electroplated nanometer Ni interlayer was investigated. The elements distribution was analyzed by energy dispersion spec-trometry. The results show that the interlayer can prevent the elements interdiffusion of Ti, V, Al in titanium alloy and Fe, Ni, Cr in stainless steel effectively, restrain the forming of intermetallic compound TiFe, TiFe2 and brittle phase TiC very well. The calculating results of activation energy show that the diffusibility of nanometer Ni is better than Ni foil in diffusion layer at joints.
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Key words:
- titanium alloy /
- stainless steel /
- electroplated nanometer Ni /
- welding /
- diffusibility
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