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Vacuum Brazing of 1Cr18Ni9Ti Stainless Steel and Ti6Al4V Titanium Alloy

Ruifeng Li

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Abstract

Ti6Al4V titanium alloy and 1Cr18Ni9Ti stainless steel was vacuum brazed using Ag-Cu-Ti as filler.The interfacial microstructure and element distribution was studied at 790℃~870 ℃ for 1min and 3min,respectively.The results show that the width of seam decreases with the increase of brazing temperature and increases with the increase of holding time,however,the width of the diffusion layer increases with the increase of brazing temperature.Element Ti determines the formation of inermetallic compounds.The optimal interfacial microstructure can be obtained when brazing at 790 ℃ for 3 min,no cracks are found in the brazed joint.

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What this paper is about

Ti6Al4V titanium alloy and 1Cr18Ni9Ti stainless steel was vacuum brazed using Ag-Cu-Ti as filler.The interfacial microstructure and element distribution was studied at 790℃~870 ℃ for 1min and 3min,respectively.The results show that the width of seam decreases with the increase of brazing temperature and increases with the increase of holding time,however,the width of the diffusion layer increases with the increase of brazing temperature.Element Ti determines the formation of inermetallic compounds.The optimal interfacial microstructure can be obtained when brazing at 790 ℃ for 3 min,no cracks are found in the brazed joint.

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Available abstract

Ti6Al4V titanium alloy and 1Cr18Ni9Ti stainless steel was vacuum brazed using Ag-Cu-Ti as filler.The interfacial microstructure and element distribution was studied at 790℃~870 ℃ for 1min and 3min,respectively.The results show that the width of seam decreases with the increase of brazing temperature and increases with the increase of holding time,however,the width of the diffusion layer increases with the increase of brazing temperature.Element Ti determines the formation of inermetallic compounds.The optimal interfacial microstructure can be obtained when brazing at 790 ℃ for 3 min,no cracks are found in the brazed joint.

Key concepts: Brazing, Microstructure, Materials science, Metallurgy, Alloy, Titanium alloy, Titanium, Layer (electronics)

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Vacuum Brazing of 1Cr18Ni9Ti Stainless Steel and Ti6Al4V Titanium Alloy — Research Paper | ScholarLens