Microstructure and Mechanical Properties of Ti5553 Butt Welds Performed by LBW under Conduction Regime

Sánchez-Amaya, J.M.; Pasang, Timotius; Amaya-Vázquez, M. R.; López-Castro, Juan de Dios; Churiaque, Cristina; Yuan, Tao; Pedemonte, Francisco Javier Botana

doi:10.3390/met7070269

Cited by 13 publications

(7 citation statements)

References 29 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sánchez-Amaya et al (2017) conducted Ti-5Al-5V-5Mo-3Cr butt joints through LBW within a conduction regime. The results indicated that the obtained LBW joint showed higher hardness of the FZ and higher values of ultimate tensile strength than those joints previously obtained with other joining processes [ 20 ]. However, in-depth investigations on the change of microstructures in the FZ during the LBW process need to be clarified.…”

Section: Introductionmentioning

confidence: 75%

“…According to the test result of tensile strength in Table 1 , it can be inferred that the tensile strength of the welded joint declined with the growth of width of the FZ. As shown in Figure 4 , the FZs of the three types of joint all consisted of columnar crystal microstructures and the wider the FZ, the larger the size of the columnar crystals [ 20 ]. Previous researches showed that the size gradient of microstructures of laser-welded joints had a significant influence on the performance of the joints [ 23 , 24 ].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Laser Welding and Post-Weld Heat Treatment on Microstructure and Mechanical Properties of Aged Ti55531 Alloy

et al. 2018

View full text Add to dashboard Cite

As one of the relatively new titanium (Ti) alloys in the engineering field, β-Ti alloy–Ti55531 has attracted a great deal of attention due to its excellent mechanical properties, while a few research papers on weldability and the post-weld heat treatment (PWHT) process of Ti55531 have been reported. Based on an orthogonal experiment design, the parameters of laser beam welding (LBW) of Ti55531 alloy with a thickness of 2 mm were optimized. Moreover, the influences of welding parameters and PWHT on the microstructures and performance of the laser-welded joint of Ti55531 were analyzed. The results showed that, for microstructures in different zones of as-welded joints of Ti55531: three forms of α phases (i.e., equiaxial αp phase, lamellar αS phase, and αGB phase at grain boundaries) were observed in base metal (BM); in the heat affected zone (HAZ), part of lamellar αS phase had dissolved while equiaxial αp phase had grown; the fusion zone (FZ) mainly consisted of β phase, which presented as coarse columnar crystals. After the PWHT process, the microstructures of the welded joint were changed: in the BM zone, α phase at grain boundary disappeared and lamellar α phase decreased; in the HAZ, the edge of αp phase obviously dissolved; in the FZ, plenty of compact needle-like α phases were observed. The tensile strength of the as-welded joint was about 940 MPa and then increased to 1161 MPa after PWHT, which were 78.4% and 96.8% of that of the original BM respectively. The fracture position transformed from the interface between the FZ and HAZ to the BM during tensile tests after PWHT.

show abstract

Section: Introductionmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 99%

Effects of Laser Welding and Post-Weld Heat Treatment on Microstructure and Mechanical Properties of Aged Ti55531 Alloy

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Titanium alloys are widely known for their high strength, low density, high operating temperatures, and good corrosion resistance, related to the stable oxide development on the surface [22,68]. Therefore, an increase in the application of titanium alloys has been noticed in numerous sectors of the industry due to these properties, especially in the aerospace, medical, automotive, and energy supply sectors [36,69,70]. Other remarkable properties such as low coefficients of thermal expansion and thermal conductivity, which together diminish heat dissipation and thermal stress, make these alloys suitable for the welding process [71].…”

Section: Titaniummentioning

confidence: 99%

Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

Chludzinski

Santos

Churiaque

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

Joining metallic alloys can be an intricate task, being necessary to take into account the material characteristics and the application in order to select the appropriate welding process. Among the variety of welding methods, pulsed laser technology is being successfully used in the industrial sector due to its beneficial aspects, for which most of them are related to the energy involved. Since the laser beam is focused in a concentrated area, a narrow and precise weld bead is created, with a reduced heat affected zone. This characteristic stands out for thinner material applications. As a non-contact process, the technique delivers flexibility and precision with high joining quality. In this sense, the present review addresses the most representative investigations developed in this welding process. A summary of these technological achievements in metallic metals, including steel, titanium, aluminium, and superalloys, is reported. Special attention is paid to the microstructural formation in the weld zone. Particular emphasis is given to the mechanical behaviour of the joints reported in terms of microhardness and strength performance. The main purpose of this work was to provide an overview of the results obtained with pulsed laser welding technology in diverse materials, including similar and dissimilar joints. In addition, outlook and remarks are addressed regarding the process characteristics and the state of knowledge.

show abstract

“…The present special issue on "Laser Welding" was a success with a total of 16 original research works published after peer-review. Different topics were discussed within this special issue: modelling and simulation of laser welding were presented in [1][2][3][4]; porosity control by means of high speed imaging and microscopy techniques was studied and discussed [5]; the effect of processing parameters on the microstructure and mechanical properties of laser-welded joints was evaluated for different metallic systems such as AZ31 alloy [6], steels [7][8][9][10], Ti-based alloys [11][12][13], and Al-based alloys [14]; and finally, dissimilar laser welding of aluminum to steel was presented [15,16].…”

Section: Contributionsmentioning

confidence: 99%