Effects of different wire chemical compositions on the mechanical and microstructural characteristics of copper brazing joints
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Tayfun Findik
Abstract
In this study, commercially pure (99.5 wt.-%) copper alloy plates were brazed using an oxy-gas flame with four different brazing alloys in butt and lap joints, and the brazing capability, the microstructural and mechanical property changes were examined. The experimental results showed that L-CuZn39Sn brazing wire used in the butt joining caused porosity and an adverse effect on the microstructural and mechanical properties. However, in lap joining, it was observed that the mechanical properties of this material show identical characteristics compared to other brazing wires. In lap joining conducted using the L-CuNi10Zn42 alloyed brazing wires, a very good grain structure originated by diffusion was observed.
Kurzfassung
In der diesem Beitrag zugrunde liegenden Studie wurden Platten einer kommerziell reinen (99,5 wt.-%) Kupferlegierung unter Verwendung einer oxidierenden Flamme mit vier verschiedenen Lötlegierungen als Stumpf- sowie Überlappstoß gelötet, dabei wurden die Änderungen der mikrostrukturellen und mechanischen Eigenschaften untersucht. Die experimentellen Ergebnisse zeigen, dass der für den Stumpfstoß verwandte L-CuZn39Sn Lötdraht Porosität verursacht und einen ungünstigen Effekt auf die mikrostrukturellen und mechanischen Eigenschaften hat. Demgegenüber wurde für die Überlappstöße beobachtet, dass die mechanischen Eigenschaften dieses Zusatzwerkstoffes identische Charakteristika im Vergleich zu den anderen Lötdrähten aufweisen. In den Überlappstößen, die mit dem Lötdraht L-CuNi10Zn42 ausgeführt wurden, wurde eine sehr gute Kornstruktur, die sich aufgrund von Diffusion ergab, beobachtet.
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© 2016, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Application of micro-magnetic testing systems for non-destructive analysis of wear progress in case-hardened 16MnCr5 gear wheels
- Weldability of duplex stainless steels with and without Cu/Ni interlayer using plasma arc welding
- TIG deposition of Ti on steel substrates using Cu as interlayer
- Examinations of casting cracks in a high alloy steel valve
- Analyzing the diffusion weldability of copper and porcelain
- Torsional behavior of a friction welded martensitic stainless steel
- Effects of different wire chemical compositions on the mechanical and microstructural characteristics of copper brazing joints
- Effect of Al addition on microstructure and properties of an Fe-B-Al alloy
- Inspection of domestic nuclear fuel rods using neutron radiography at the Tehran Research Reactor
- Strain measurement in concrete using embedded carbon roving-based sensors
- Wear behavior of multilayer coated carbide tools in finish dry hard turning
- Characteristics of austenitic stainless steel T-joints welded using the DMAG process with solid wire
- Application of the Taguchi method for surface roughness predictions in the turning process
- Experimental failure testing and repair of internal pressurized composite pipes using different fracture models
- Investigation of material removal rate (MRR) and wire wear ratio (WWR) for alloy Ti6Al4 V exposed to heat treatment processing in WEDM and optimization of parameters using Grey relational analysis
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Application of micro-magnetic testing systems for non-destructive analysis of wear progress in case-hardened 16MnCr5 gear wheels
- Weldability of duplex stainless steels with and without Cu/Ni interlayer using plasma arc welding
- TIG deposition of Ti on steel substrates using Cu as interlayer
- Examinations of casting cracks in a high alloy steel valve
- Analyzing the diffusion weldability of copper and porcelain
- Torsional behavior of a friction welded martensitic stainless steel
- Effects of different wire chemical compositions on the mechanical and microstructural characteristics of copper brazing joints
- Effect of Al addition on microstructure and properties of an Fe-B-Al alloy
- Inspection of domestic nuclear fuel rods using neutron radiography at the Tehran Research Reactor
- Strain measurement in concrete using embedded carbon roving-based sensors
- Wear behavior of multilayer coated carbide tools in finish dry hard turning
- Characteristics of austenitic stainless steel T-joints welded using the DMAG process with solid wire
- Application of the Taguchi method for surface roughness predictions in the turning process
- Experimental failure testing and repair of internal pressurized composite pipes using different fracture models
- Investigation of material removal rate (MRR) and wire wear ratio (WWR) for alloy Ti6Al4 V exposed to heat treatment processing in WEDM and optimization of parameters using Grey relational analysis
