Inconel-steel functionally bimetal materials by hybrid directed energy deposition and thermal milling: Microstructure and mechanical properties

• Autorzy: Li Pengfei , Gong Yadong , Xu Yunchao , Qi Yang , Sun Yao , Zhang Huan

Identyfikatory

DOI

10.1016/j.acme.2019.03.002

• Języki publikacji: EN

Abstrakty

EN

Many engineering applications, particularly those in extreme environments, require com-ponents with properties that vary with location in the part. Functionally bimetal materials (FBM) that combine dissimilar materials, such as those with different density and thermal properties, provide a potential solution to this need. Directed energy deposition (DED) is convenient to fabricate all kinds of complicated parts and to clad different materials at specific locations. Milling can improve the surface quality and dimensional accuracy after DED. Hybrid DED and thermal milling manufacturing can fabricate FBMs and be applied to laser repair. This study used this new method to fabricate Inconel-steel FBM. Inconel 718 powder and 316L stainless steel powder were deposited on the thermal milling surface of parts prepared with DED. The interfacial characteristics of different cladding materials were compared. Microstructure, chemistry, phase composition, element segregation and micro-hardness varied with position and were characterized by energy dispersive spectroscopy, X-ray diffraction, scanning electron microscopy and microhardness testing. Finally, the tensile properties of the FBM were compared to other materials, and the fracture location and morphology were analyzed. The results showed that the yield strength (YS) reached 368 MPa, and the ultimate tensile strength (UTS) reached 516 MPa. The Vickers microhard-ness of the diffusion layer was approximately 250 HV.

Słowa kluczowe

EN

functionally bimetal materials; directed energy deposition; hybrid manufacturing; microstructure; element segregation

PL

materiały bimetaliczne; mikrostruktura; produkcja hybrydowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 19, no. 3
• Strony: 820--831
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Li Pengfei

• Northeastern University, Shenyang, China

autor

Gong Yadong

• Northeastern University, Shenyang, China

autor

Xu Yunchao

• Northeastern University, Shenyang, China

autor

Qi Yang

• Northeastern University, Shenyang, China

autor

Sun Yao

• Northeastern University, Shenyang, China

autor

Zhang Huan

• Northeastern University, Shenyang, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)