New technique of radial-additive friction stir repairing for exceeded tolerance holes

Song, Qing; Wen, Quan; Ji, Shude; Meng, Xianghai; Wu, Baosheng; Qi, Weiwei

doi:10.1007/s00170-019-04619-9

Cited by 12 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Repairs in lightweight structural alloys have historically been based on fusion processes, such as gas tungsten arc welding or tungsten inert gas welding [1,2]. In many aluminum and magnesium alloys, these methods are prone to fusion-related defects, including porosity, cracking, inclusions, undesirable columnar microstructures, and phase segregation, that can severely degrade the mechanical properties [3]. In addition, even in the 'weldable' alloys, such as aluminum 6061, thermal effects from the fusion process lead to loss of strength in the heat affected zone (HAZ).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, even in the 'weldable' alloys, such as aluminum 6061, thermal effects from the fusion process lead to loss of strength in the heat affected zone (HAZ). As a result, solid-state processes based on fiction stir technologies have been gaining increasing attention for repair applications [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…AFSD has obvious potential for repair applications; however, only two publications were identified that directly assess implementation strategies [3,38]. Griffiths, et al, evaluated AFSD for hole-and groove-filling in of 7075 aluminum plate, and reported complete filling of the features combined with extensive feed/substrate mixing and good bonding in the upper portions of the repair.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, they observed up to 15% decrease in the hardness of the repaired volume relative to the original feed material, and attributed this change to the dissolution of the hardening precipitates (e.g., loss of temper). Qi, et al, evaluated a radial method to reduce the diameter of tolerance-exceeding holes in AZ31 magnesium alloy plate [3]. It should be noted that the repair material comprised plugs pre-inserted into the holes, and was not actively fed into the interface; thus, the method is not strictly relevant to the AFSD discussion.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Repair of Aluminum 6061 Plate by Additive Friction Stir Deposition

Martin

Luccitti

Walluk

2021

Preprint

View full text Add to dashboard Cite

The deposition of new alloy to replace a worn or damaged surface layer is a common strategy for repairing or remanufacturing structural components. For high-performance aluminum alloys common in the automotive, aerospace, and defense industries, however, traditional fusion-based deposition methods can lead to solidification cracking, void formation, and loss of strength in the heat affected zone. Solid state methods, such as additive friction stir deposition (AFSD), mitigate these challenges by depositing material at temperatures below the melting point. In this work, a solid state volumetric repair was performed using AFSD of aluminum alloy 6061-T6 to fill grooves machined into the surface of a plate of 6061-T651. The groove-filling process is relevant to replacement of cracked or corroded material after removal by localized grinding. Three groove geometries were evaluated by means of metallographic inspection, tensile testing, and fatigue testing. For the process conditions and groove geometries used in this study, effective repairs were achieved to a depth of 3.1 – 3.5 mm. Below that depth, the interface between the substrate and AFSD filler exhibited poor bonding associated with insufficient shear deformation. The mechanical properties of the filler alloy, the depth of the heat affected zone, and areas for further optimization are discussed within the context of precipitation hardened aluminum alloys.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Repair of Aluminum 6061 Plate by Additive Friction Stir Deposition

Martin

Luccitti

Walluk

2021

Preprint

View full text Add to dashboard Cite

show abstract

Repair of aluminum 6061 plate by additive friction stir deposition

Martin

Luccitti

Walluk

2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The deposition of new alloy to replace a worn or damaged surface layer is a common strategy for repairing or remanufacturing structural components. For high-performance aluminum alloys common in the automotive, aerospace, and defense industries, however, traditional fusion-based deposition methods can lead to solidi cation cracking, void formation, and loss of strength in the heat affected zone. Solid state methods, such as additive friction stir deposition (AFSD), mitigate these challenges by depositing material at temperatures below the melting point. In this work, a solid state volumetric repair was performed using AFSD of aluminum alloy 6061-T6 to ll grooves machined into the surface of a plate of 6061-T651. The groove-lling process is relevant to replacement of cracked or corroded material after removal by localized grinding. Three groove geometries were evaluated by means of metallographic inspection, tensile testing, and fatigue testing. For the process conditions and groove geometries used in this study, effective repairs were achieved to a depth of 3.1 -3.5 mm. Below that depth, the interface between the substrate and AFSD ller exhibited poor bonding associated with insu cient shear deformation. The mechanical properties of the ller alloy, the depth of the heat affected zone, and areas for further optimization are discussed within the context of precipitation hardened aluminum alloys.

show abstract

Microstructural formation and mechanical performance of friction stir double-riveting welded Al-Cu joints

Zhang²,

Gong³

et al. 2023

Chinese Journal of Aeronautics

View full text Add to dashboard Cite

New technique of radial-additive friction stir repairing for exceeded tolerance holes

Cited by 12 publications

References 29 publications

Repair of Aluminum 6061 Plate by Additive Friction Stir Deposition

Repair of Aluminum 6061 Plate by Additive Friction Stir Deposition

Repair of aluminum 6061 plate by additive friction stir deposition

Microstructural formation and mechanical performance of friction stir double-riveting welded Al-Cu joints

Contact Info

Product

Resources

About