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Author:

Liu, Haibin (Liu, Haibin.) | Xu, Tianle (Xu, Tianle.) | Li, Jihang (Li, Jihang.) | Xie, Ruishan (Xie, Ruishan.) | Chen, Ying (Chen, Ying.) | Huang, Ning (Huang, Ning.) | Chen, Shaojun (Chen, Shaojun.) | Xiao, Jun (Xiao, Jun.) | Chen, Shujun (Chen, Shujun.)

Indexed by:

EI Scopus SCIE

Abstract:

The current Friction Stir Welding (FSW) based solid-state defect repairing method is an ideal repair technology for high-strength aluminum alloy. However, due to the limitation of pin length and the existence of shoulder, the stirring pin cannot penetrate deep into the root of defects and is difficult to extend in the width direction, which poses great challenges for components with large defects, such as one-dimensional, two-dimensional and volume defects. To overcome these limitations, this study successfully achieved effective repair of various forms of defects using the solid-state Friction Rolling Repair (FRR) technology through multi-layer multi-bead deposition. The microstructure and mechanical properties of the repaired ZL114A cast aluminum alloy joints were investigated. The results demonstrate well-bonded repaired boundaries, significant grain refinement at the junction between the repaired area and boundary, and ultimate tensile strength exceeding 80 % of base material strength. The average grain size of the repaired area can reach a minimum of 2.82 mu m. The grain refinement degree of the side joint of the surface defect repair sample is higher than that of the bottom joint, and the corner joint of the bottom surface shows the highest proportion of recrystallized grains. Fracture locations were consistently within the interior of the repair zone in tensile specimens, indicating superior properties at side joints compared to those within the interior. The research proves that FRR has the ability to repair a variety of typical defects, including one-dimensional, two-dimensional and volume defects, in the process of processing and service, which lays a foundation for the industrial application of FRR.

Keyword:

Friction rolling additive manufacturing Mechanical properties Microstructure Defect repair Aluminum alloy

Author Community:

  • [ 1 ] [Liu, Haibin]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Xu, Tianle]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Jihang]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Xie, Ruishan]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Chen, Ying]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [Xiao, Jun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 7 ] [Chen, Shujun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 8 ] [Xie, Ruishan]Beijing Univ Technol, Chongqing Res Inst, Chongqing 401121, Peoples R China
  • [ 9 ] [Huang, Ning]Beijing Spacecrafts Mfg Factory, Beijing 100190, Peoples R China
  • [ 10 ] [Chen, Shaojun]Beijing Spacecrafts Mfg Factory, Beijing 100190, Peoples R China

Reprint Author's Address:

  • [Xie, Ruishan]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China;;

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Source :

JOURNAL OF MANUFACTURING PROCESSES

ISSN: 1526-6125

Year: 2024

Volume: 127

Page: 62-76

6 . 2 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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