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説明:

The layer-by-layer laser powder bed fusion (L-PBF) process was applied to fabricate functionally graded multi-materials (FGMs) of nickel-titanium alloy. The FGMs Ni-Ti alloy was built with composition transitioning from pure Ni incrementally graded to pure Ti by different composition gradients. The microstructure, chemical composition, and phase evolution were characterized using SEM, EDS, XRD, and EBSD along the build direction. By varying the proportions of Ni and Ti, the microstructure and phases were changed gradually across the build direction. Several phase transformations, gamma-Ni -> NiTi B2 + intermetallic phases alpha-Ti, appeared through the compositional gradient. Cracks were found in the gradient zone, and the results were explained in terms of the various phases present. The potential to accomplish such a completely deposited FGMs Ni-Ti alloy and considerable changes in composition are made possible by a new strategy to make innovative FGMs Ni-Ti alloys together with 3D components using L-PBF additive manufacturing.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Laser powder bed fusion process, Functionally graded materials, Ni-Ti alloy, Microstructure, Compositional gradient

刊行年月日: 2023-02-28

出版者: Elsevier BV

掲載誌:

• Journal of Materials Research and Technology (ISSN: 22387854) p. 5559-5572

研究助成金:

• Japan Society for the Promotion of Science JP21K03814

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.jmrt.2023.02.151

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更新時刻: 2024-06-21 16:30:21 +0900

MDRでの公開時刻: 2024-06-21 16:30:21 +0900