Designing smart display table for senior care service based on service design research
In: Gerontechnology: international journal on the fundamental aspects of technology to serve the ageing society, Band 21, Heft s, S. 1-1
ISSN: 1569-111X
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In: Gerontechnology: international journal on the fundamental aspects of technology to serve the ageing society, Band 21, Heft s, S. 1-1
ISSN: 1569-111X
Liquid metal dealloying (LMD) has recently attracted significant attention. Because the LMD process enables the production of three-dimensional (3D) interconnected non-noble metallic materials. In addition, the metallic melt medium is useful for the development of heterostructure (HS) metal–metal composites. However, the solidified liquid metal phase (low melting point metals such as Mg, Bi, Sn, or Cu) has a much lower strength than the developed ligament phase (e.g., Fe, FeCr, Ti, etc.). In this study, the soft Mg phase was strengthened by adding alloying element of Ni. A eutectic composition of Mg–10 at.% Ni melt leads to the formation of fine eutectic structure of (Mg–Mg2Ni) within 3D interconnected morphology. This hierarchical heterostructured composite consisted of FeCr ligament and Mg–Mg2Ni lamellar, and a high yield strength of 280 MPa and a noticeable elongation (1.5%) were achieved. The complex 3D morphology of ligament and lamellar geometrically constraint each other, and it prevents the early fracture of brittle Mg–Mg2Ni lamellar phase. The alloy design for the LMD melt gives insights for hierarchical HS materials with outstanding mechanical properties for structural applications. © 2021 The Authors. ; This work was supported by JSPS KAKENHI (Grant Number JP20J14001 ). Yeonbeom Jeong acknowledges the support from the GP-MS at Tohoku University . This work has supported by the National Research Foundation of Korea grant funded by the Korea government(MSIT) (No. NRF-2021R1C1C1007645 ). This work was primarily supported by a Grant-in-Aid for Scientific Research on Innovative Areas "Science of New-Class of Materials Based on Elemental Multiplicity and Heterogeneity (Grant No. 18H05452)" from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT, Japan) (H.K and T.W). This work was performed under the ICC-IMR Program of the Institute for Materials Research, Tohoku University.
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