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Contact reactive brazing of Ti53311S alloy using Cu foil as interlayer: Interfacial microstructure and joining properties
Graphical abstract Interfacial mocrostructure of Ti53311S/Cu/Ti53311S joints brazed at different temperature for 10min. (a) 940°C, (b)960°C, (c) 980°C, (d) 1000°C, (e) 1020°C. Display Omitted Highlights ► Contact reactive brazing of Ti53311S alloy was achieved. ► Interfacial microstructure of brazed joint was characterized. ► Interfacial microstructural morphology strongly depended on the brazing temperature. ► Joint strength increased with the reduction of intermetallic phases in joint. ► The highest tensile strength of brazed joints reached 932.6MPa.
Abstract Contact reactive brazing of Ti53311S alloy was extensively evaluated using Cu foil as interlayer within the range of 940–1020°C for 10min. Effect of brazing temperature on the interfacial microstructure and its evolution as well as joining properties were investigated in detail. TiCu and Ti3Cu4 intermetallic compounds formed in joint by isothermal solidification and peritectic reaction (TiCu+L→Ti3Cu4) when the brazing temperature was 940°C. A eutectoid microstructure consisting of α-Ti and Ti2Cu phases was produced by the eutectoid reaction (β-Ti→α-Ti+Ti2Cu) in joint when brazed at 960–1000°C. Whereas when brazing was conducted at 1020°C (above the α→β transus temperature 1010°C), Lamellar(α+β) structure was obtained in joint by isothermal solidification and subsequent phase transformation. Tensile test indicated that the maximum average tensile strength reached 932.6MPa at room temperature. Brittle fractures were observed in all of the brazed specimens although the fracture mode was different.
Contact reactive brazing of Ti53311S alloy using Cu foil as interlayer: Interfacial microstructure and joining properties
Graphical abstract Interfacial mocrostructure of Ti53311S/Cu/Ti53311S joints brazed at different temperature for 10min. (a) 940°C, (b)960°C, (c) 980°C, (d) 1000°C, (e) 1020°C. Display Omitted Highlights ► Contact reactive brazing of Ti53311S alloy was achieved. ► Interfacial microstructure of brazed joint was characterized. ► Interfacial microstructural morphology strongly depended on the brazing temperature. ► Joint strength increased with the reduction of intermetallic phases in joint. ► The highest tensile strength of brazed joints reached 932.6MPa.
Abstract Contact reactive brazing of Ti53311S alloy was extensively evaluated using Cu foil as interlayer within the range of 940–1020°C for 10min. Effect of brazing temperature on the interfacial microstructure and its evolution as well as joining properties were investigated in detail. TiCu and Ti3Cu4 intermetallic compounds formed in joint by isothermal solidification and peritectic reaction (TiCu+L→Ti3Cu4) when the brazing temperature was 940°C. A eutectoid microstructure consisting of α-Ti and Ti2Cu phases was produced by the eutectoid reaction (β-Ti→α-Ti+Ti2Cu) in joint when brazed at 960–1000°C. Whereas when brazing was conducted at 1020°C (above the α→β transus temperature 1010°C), Lamellar(α+β) structure was obtained in joint by isothermal solidification and subsequent phase transformation. Tensile test indicated that the maximum average tensile strength reached 932.6MPa at room temperature. Brittle fractures were observed in all of the brazed specimens although the fracture mode was different.
Contact reactive brazing of Ti53311S alloy using Cu foil as interlayer: Interfacial microstructure and joining properties
Song, X.G. (author) / Cao, J. (author) / Chen, H.Y. (author) / Wang, H.Q. (author) / Feng, J.C. (author)
2012-11-23
7 pages
Article (Journal)
Electronic Resource
English
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