Unravelling microstructure evolution mechanism within machined subsurface during turning of laser powder bed fusion-manufactured Inconel 625

• Autorzy: Lv Zhaoqi , Wang Guobin , Li Binxun , Sun Yujing , Xia Yan , Du Jin , Su Guosheng

Identyfikatory

DOI

10.1007/s43452-024-01055-9

• Języki publikacji: EN

Abstrakty

EN

Post-machining of metal additive-manufactured (AMed) nickel-based alloy components is one of the efficient approaches to reduce surface roughness and enhance surface quality. Although the white layer formed on the wrought nickel-based alloy surface after machining has been deeply investigated, the formation mechanism of the white and dark layers generated on AMed nickel-based alloy still faces challenges. In this study, the white and dark layer formation on laser powder bed fusion (LPBF)-fabricated Inconel 625 alloy surface after turning was determined. Then various material characterization techniques were adopted to comprehensively analyze the microstructure, texture and phase constituent concerning the white and dark layers. Obvious intragranular misorientation change, great concentration of high angle grain boundaries and grain refinement occurred beneath the machined surface. Strongly refined grains in nanometers and noticeable plastic deformation with slight grain division along with disappeared dense dislocations were revealed correspondingly within the white and dark layers. Phase transformation was absent from the machined surface despite cutting parameters. Dynamical crystallization (DRX) following shear deformation dominated the formation of the white layer while plastic deformation was responsible for dark layer formation. The findings were beneficial to understanding the occurrence of damages initiated from machined surfaces during service.

Słowa kluczowe

EN

laser powder bed fusion; Inconel 625; turning; white layer; dark layer

PL

spawanie laserowe; toczenie; Inconel 625

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2025
• Tom: Vol. 25, no. 1
• Strony: art. no. e5, 2025
• Opis fizyczny: Bibliogr. 38 poz., fot., rys., wykr.

Twórcy

autor

Lv Zhaoqi

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

autor

Wang Guobin

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

autor

Li Binxun

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

• https://orcid.org/0000-0002-4642-8825

autor

Sun Yujing

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

autor

Xia Yan

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

autor

Du Jin

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

autor

Su Guosheng

• School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road, Jinan 250353, People’s Republic of China
• Shandong Institute of Mechanical Design and Research, Jinan 250031, People’s Republic of China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)