• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (14): 151-158,168.doi: 10.3901/JME.2023.14.151

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Research on Fatigue Performance of Low Carbon Steel by Wire and Arc Additive Remanufacturing

FENG Xiaohui1, GAO Fei2,3, ZHAO Yang4, GUAN Xuefei5, HE Jingjing2,3, LIN Jing2   

  1. 1. Aerospace Science and Industry Defense Technology Research and Test Center, Beijing 100854;
    2. Science & Technology on Reliability & Environmental Engineering Laboratory, Beihang University, Beijing 100191;
    3. Ningbo Institute of Technology, Beihang University, Ningbo 315800;
    4. National Key Laboratory for Remanufacturing, Beijing 100072;
    5. Graduate School of China Academy of Engineering Physics, Beijing 100193
  • Received:2022-01-20 Revised:2022-11-22 Online:2023-07-20 Published:2023-08-16

Abstract: Remanufacturing technology centered on additive manufacturing has drawn a lot of attention in the remanufacturing community for aerospace and military industry. However, due to the characteristics of layer-by-layer fused deposition, the fatigue performance of additive manufacturing materials is quite different compared with the base material. During the molding process, the moving heat source is repeatedly cladded, forming a complex thermal history and causing complex microstructure. The fatigue behavior of a low-carbon steel component fabricated by wire and arc additive remanufacturing is studied. The features of microstructure, texture, and fracture mode of the interlayer area and deposited area are also investigated to reveal the mechanism of anisotropy. Additionally, the difference of fatigue performance between the wire and arc additive manufactured and conventional manufactured specimens is studied.

Key words: wire and arc additive remanufacturing, fatigue performance, microstructure

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