Comparing Laser Welding Technologies with Friction Stir Welding for Production of Aluminum Tailor-Welded Blanks

Hovanski, Yuri; Carlson, Blair E.; Hartfield-Wünsch, Susan E.; Pilli, Siva Prasad

doi:10.4271/2014-01-0791

Cited by 13 publications

(5 citation statements)

References 7 publications

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“…55,56 Since then, the concept has been adapted to the use of aluminum and its alloys. 57 Because this joining process can be done outside of the automotive assembly plant, it is easier for automotive fabricators to implement into production. A tailor-welded blank of Fe to Al could be brought into the factory floor and introduced into the BIW or space frame for joining to similar materials.…”

Section: Development Of Welding For Very Dissimilar Materials Familiesmentioning

confidence: 99%

Welding of Very Dissimilar Materials (Fe-Al)

Schneider

Radzilowski²

2014

JOM

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Designers of transportation vehicles (air, land, or sea) continually seek ways to reduce vehicle weight in response to increasing fuel economy mandates, mission requirements, or other competitive pressures. One way to do this is by the selection of material types and their properties based on functional and structural requirements. While these material changes can help meet performance mandates, their implementation in a production environment relies on retaining economic competitiveness. This article traces the history of the various joining processes relevant to the current challenge in joining the very dissimilar families of steel (Fe) and aluminum (Al) alloys.

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Section: Development Of Welding For Very Dissimilar Materials Familiesmentioning

confidence: 99%

Welding of Very Dissimilar Materials (Fe-Al)

Schneider

Radzilowski²

2014

JOM

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“…Several studies specifically evaluated the influence that strength or thickness ratios have on the overall formability of the TWB [ 7 , 10 ]. Other studies focus on the influence of welding methods and parameters on the formability of TWBs [ 5 , 11 , 12 , 13 ], with recent studies working to improve friction stir welding (FSW) with ultra-sonic vibration [ 14 ]. Numerous studies focus on the optimization of FSW specifically for the formability of TWBs.…”

Section: Introductionmentioning

confidence: 99%

Digital Image Correlation Characterization and Formability Analysis of Aluminum Alloy TWB during Forming

Hovanski

Miles

2022

Materials

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The formability of aluminum alloy 5754-O tailor-welded blanks prepared by friction stir welding was studied experimentally. The strain evolution and deformation during limiting dome height experiments were studied using digital image correlation and the ARAMIS software. The influence of the sheet thickness of the base materials on the punch loading, fracture strain and formability were investigated experimentally. It was found that the punch loading, fracture strain and limiting dome height values increase with the increasing sheet thickness of the base materials. A linear relationship between the limiting dome height value and the sheet thickness was demonstrated. An increase of 16.8% in the fracture strain of aluminum tailor-welded blanks was observed for an increase of 36% in sheet thickness. This paper provides a methodology for experimentally determining the forming limits of aluminum alloy tailor-welded blanks accurately.

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“…The weld joint can be roughly divided into several categories according to the joint material and thickness such as joint with the same or different materials, joint with the same or different thickness and joint with different materials and different thickness [9]. Extensive research has been conducted to study the mechanical and microstructure properties, formability and failure of the aluminum alloys joints [10] and steel joints [11], which can be found in Merklein's review [9]. In order to reduce the local deformation and improve formability, Abbasi et al [12] modified the forming parameters including thickness ratio, rolling direction with respect to the weld line and direction of major stress with respect to the weld line and found that maximum formability occurred when the major stress and rolling direction were along the weld line.…”

Section: Introductionmentioning

confidence: 99%

Correlation between softening mechanisms and deformation non-uniformity of laser-welded titanium alloy tube during gas bulging process

Wang

Liu

Politis

et al. 2017

Materials Characterization

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In this paper, post-weld annealing was carried out to adjust the flow stress difference between weld seam and base material (BM). Deformation non-uniformity of laser-welded titanium alloy tubes before and after annealing was evaluated by gas bulging at 800 °C. Results show that after double annealing (950 °C/2 h, air cooling + 600 °C / 2 h, air cooling), weld seam and BM had similar peak stress at first during tensile test at 800 °C, 0.001 s− 1, then the flow stress difference between them changed dynamically due to different softening rates. The maximum flow stress difference ratio was reduced from 36% to 17% after annealing. Deformation uniformity of the bulged tube was improved by 24.6% after annealing, but the higher softening rate of BM during gas bulging confined its further improvement. At early stage of gas bulging of the annealed tube, the main softening mechanism for weld seam was dynamic recovery and that for BM was globularization of secondary α and phase transformation of α to β. At middle-late stage of gas bulging, the main softening mechanism for weld seam was partial globularization of lamella α and that for BM was wide dynamic recrystallization

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Comparing Laser Welding Technologies with Friction Stir Welding for Production of Aluminum Tailor-Welded Blanks

Cited by 13 publications

References 7 publications

Welding of Very Dissimilar Materials (Fe-Al)

Welding of Very Dissimilar Materials (Fe-Al)

Digital Image Correlation Characterization and Formability Analysis of Aluminum Alloy TWB during Forming

Correlation between softening mechanisms and deformation non-uniformity of laser-welded titanium alloy tube during gas bulging process

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