Influence of Si Coating on Interfacial Microstructure of Laser Joining of Titanium and Aluminium Alloys

Oliveira, Aline Capella de; Moreira, André Felipe Ribeiro; Mello, C.B.; Riva, Rudimar; Oliveira, R. M.

doi:10.1590/1980-5373-mr-2016-1109

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…The chemical compositions of two studied materials are listed in Table 1. Element Si has been demonstrated to be effective for the growth of Ti/Al brittle intermetallic [19]. The thermal physical properties of the received Ti6Al4V and AA6060 were provided by Titanium International Group SRL in Italy and EXTRUSAL S.A in Portugal, as listed in Table 2.…”

Section: Base Materialsmentioning

confidence: 99%

Interfacial Characteristics of Dissimilar Ti6Al4V/AA6060 Lap Joint by Pulsed Nd:YAG Laser Welding

Xue

Péreira

Vincze

et al. 2019

Metals

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This paper focuses on the interfacial characteristics of dissimilar Ti6Al4V/AA6060 lap joint produced by pulsed Nd:YAG laser beam welding. The process-sensitivity analysis of welding-induced interface joining quality was performed by using the orthogonal design method. Microstructural tests such as scanning electron microscopy and energy dispersive X-ray spectroscopy were used to observe the interfacial characteristics. The mechanism of interfacial crack initiation, which is an important indicator of joint property and performance, was assessed and analyzed. The preferred propagation paths of welding cracks along the interfaces of different intermetallic layers with high dislocation density were analyzed and discussed in-depth. The results indicate that discontinuous potential phases in the micro-crack tip would mitigate the mechanical resistance or performance of the welded joint, while the continuous intermetallic layer can lead to a sound jointing performance under pulsed Nd:YAG laser welding process.

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Section: Base Materialsmentioning

confidence: 99%

Interfacial Characteristics of Dissimilar Ti6Al4V/AA6060 Lap Joint by Pulsed Nd:YAG Laser Welding

Xue

Péreira

Vincze

et al. 2019

Metals

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“…Unfortunately, a huge challenge exists in joining Ti and Al together [ 5 ]. A brittle interfacial intermetallic compound (IMC) layer forms at the Ti/Al bonding interface [ 6 ]. The mechanical performance of Ti/Al joints is dominated by this brittle IMC layer [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

The Microstructure and Mechanical Properties of Dual-Spot Laser Welded-Brazed Ti/Al Butt Joints with Different Groove Shapes

Lei

Zhang

et al. 2020

Materials

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Laser welding-brazing was performed to join Ti and Al together. The dual-spot laser beam mode was selected as the heat source in this study. Ti-6Al-4V and 6061-T6 Al alloys were selected as the experimental materials. Al-12Si welding wire was selected as the filler material. The effect of groove shape on the weld appearance, microstructure, temperature field, and mechanical performance of Ti/Al welded-brazed butt joints was investigated. The interfacial intermetallic compound (IMC) layer at the Ti/Weld brazing interface was inhomogeneous in joints with I-shaped and Y-shaped grooves. In Ti/Al joints with V-shaped grooves, the homogeneity of temperature field and IMC layer was improved, and the maximum thickness difference of IMC layer was only 0.20 μm. Nano-sized granular Ti7Al5Si12, Ti5Si3, and Ti(Al,Si)3 constituted the IMCs. The tensile strength of Ti/Al joints with V-shaped grooves was the highest at 187 MPa. The fracture mode transformed from brittle fractures located in the IMC layer to ductile fractures located in the Al base metal, which could be attributed to the improvement of the IMC layer at the brazing interface.

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Influence of Si content on interfacial reactions and mechanical properties of dual-spot laser welded-brazed Ti/Al joints

Lei

Zhang

et al. 2020

Journal of Manufacturing Processes

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Influence of Si Coating on Interfacial Microstructure of Laser Joining of Titanium and Aluminium Alloys

Cited by 3 publications

References 19 publications

Interfacial Characteristics of Dissimilar Ti6Al4V/AA6060 Lap Joint by Pulsed Nd:YAG Laser Welding

Interfacial Characteristics of Dissimilar Ti6Al4V/AA6060 Lap Joint by Pulsed Nd:YAG Laser Welding

The Microstructure and Mechanical Properties of Dual-Spot Laser Welded-Brazed Ti/Al Butt Joints with Different Groove Shapes

Influence of Si content on interfacial reactions and mechanical properties of dual-spot laser welded-brazed Ti/Al joints

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