Journal Article

PUBDB-2023-05962

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Manufacturing size effect on the structural and mechanical properties of additively manufactured Ti-6Al-4V microbeams

Yin, K. (Corresponding author)Extern* ; Cao, B. (Corresponding author) ; Todt, J.Extern* ; Gutmann, F. ; Tunçay, H. F. ; Roth, A. ; Fischer, F. ; Grübel, N. ; Pfaff, A. ; Ganzenmüller, G. C. ; Keckes, J.Extern* ; Hiermaier, S. ; Eberl, C.

2023
Ed. Board, Journal of Materials Science & Technology Shenyang

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Please use a persistent id in citations: doi:10.1016/j.jmst.2022.12.006

Abstract: The size effect of Ti-6Al-4V submillimeter structures manufactured by selective laser melting, which is critical for metallic mechanical metamaterials of unique mechanical properties, for example, negative Poisson's ratio and ultrahigh modulus, which show promise in biomedical, environmental, energy-related applications, has not been systematically investigated. Presented here are the quantification of the porosities by X-ray microtomography scans, texture analysis, and mechanical characterization of the additively manufactured Ti-6Al-4V microbeams. We found linearly decreasing porosities, increasing mechanical properties, and increasing texture in the microbeam with increasing diameter from 250 to 500 µm. The variation of microstructure in microbeams of different diameters and along the sample height, resulting from the printing parameters and the thermal conditions, leads to the discrepancy between the behavior observed in experiments and finite element simulation. Our results provide the structure-property-processing correlation to improve the manufacturing and prediction of the mechanical behavior of metallic mechanical metamaterials.

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Contributing Institute(s):

1. FS-Photon Science (FS-PS)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. DFG project 390951807 - EXC 2193: Lebende, adaptive und energieautonome Materialsysteme (livMatS) (390951807) (390951807)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2023

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Essential Science Indicators ; IF >= 10 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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