Paper Titles

In Situ ALD-TEM System to Study Atomic Nucleation Phenomena - Enabled by Ultrathin Large Aspect Ratio Free-Standing Shell Structures
p.31

A Study on Inclusion Characterisation of Steel Using a Novel Inclusion Characterisation Tool
p.39

Design and Evaluation of an Automated System for the Preparation of Samples
p.45

Conceptual Design of a Fluid Handling System with Dosing and Mixing for PCR Applications
p.51

Dynamic Modulus Anomaly in Metallic Alloys Prepared by Additive Manufacturing
p.57

Conception of a Multi-Component Water System with Individually Adaptable Modules for Measuring Diverse Parameters and a Variability of the Purification Output Quality
p.65

Development of a Thermal Cycler for a Low-Cost Real-Time PCR Application
p.73

Assessment of Powder Solidification Structures in Tool Steels Using State-of-the-Art Microstructural Characterization Techniques
p.81

Evaluation of Interfacial Thermal Resistance of Al-Si Alloy by Using Image-Based Simulation
p.87

HomeKey Engineering MaterialsKey Engineering Materials Vol. 968Dynamic Modulus Anomaly in Metallic Alloys...

Dynamic Modulus Anomaly in Metallic Alloys Prepared by Additive Manufacturing

Article Preview

Abstract:

Dynamic modulus vs. temperature was measured in different alloys (stainless steels, Al alloys, Ti alloys, Ni-base superalloys) prepared by additive manufacturing and an anomalous trend was observed in some of them. Dynamic modulus, measured in successive mechanical spectroscopy test runs with heating-cooling cycles, exhibits an anomalous trend in the first test run that is no longer present in the successive runs. The phenomenon consists in the inversion of the decreasing trend of modulus occurring during heating and gives rise to its permanent increase at the end of the complete heating-cooling cycle. The temperature range where the modulus anomaly takes place and the permanent increase observed after cooling depend on the specific alloy. Scanning electron microscopy (SEM) observations and density measurements revealed that the irreversible process causing the anomalous behavior is the closure of pores of nanometric size leading to material densification. This result has been discussed by considering lattice diffusion.

You might also be interested in these eBooks

International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications - THERMEC 2023

Technologies in Materials Research and Application

Info:

Periodical:

Key Engineering Materials (Volume 968)

Pages:

57-63

DOI:

https://doi.org/10.4028/p-Mz9HWR

Citation:

Cite this paper

Online since:

December 2023

Authors:

Marcello Cabibbo, Chiara de Crescenzo, Alessandra Fava, Roberto Montanari, Alessandra Palombi, Annalisa Pola, Marialaura Tocci, Alessandra Varone*

Keywords:

Additive Manufacturing, Dynamic Modulus, Mechanical Spectroscopy, Porosity

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2023 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] C. Zener, Elasticity and anelasticity of metals, University of Chicago Press, Chicago, Illinois, 1948.

[2] A.S. Nowick, B.S. Berry, Anelastic relaxation in crystalline solids, Academic Press New York and London, 1972.

[3] M.S. Blanter, I.S. Golovin, H. Neuhäuser, H.-R. Sinning, Internal Friction in Metallic Materials. Springer Series in Materials Science, Springer Verlag, Berlin Heidelberg, 2007. ISBN 10: 3642088252 ISBN 13: 9783642088254.

DOI: 10.1007/978-3-540-68758-0

[4] R. Montanari, A. Varone, Synergic Role of Self-interstitials and Vacancies in Indium Melting. Metals 5 (2015) 1061–1072.

DOI: 10.3390/met5021061

[5] R. Montanari, A. Varone, Mechanical spectroscopy investigation of liquid Pb-Bi alloys. Solid State Phenomena 184 (2012) 434-439. https://doi.org/10.4028/www.scientific.net/ SSP.184.434.

DOI: 10.4028/www.scientific.net/ssp.184.434

[6] A. Fava, R.Montanari, A. Varone, Mechanical spectroscopy investigation of point defect-driven phenomena in a Cr martensitic steel, Metals 8 (2018). ).

DOI: 10.3390/met8110870

[7] E. Bolli, A. Fava, P. Ferro, S. Kaciulis, A. Mezzi, R. Montanari, A. Varone, Cr Segregation and Impact Fracture in a Martensitic Stainless Steel, Coatings 10(9) (2020) 843.

DOI: 10.3390/coatings10090843

[8] R. Gupta, P. Gondi, R. Montanari, G. Principi, M.E. Tata, Internal friction and Mössbauer study of C-Cr associates in MANET steel, Journal of Materials Research 12 (1997) 296-299.

DOI: 10.1557/JMR.1997.0038

[9] P. Deodati, R. Montanari, O. Tassa, N. Ucciardello, (Single crystal PWA 1483 superalloy: dislocation rearrangement and damping phenomena. Materials Science & Engineering A 521-522 (2009) 102-105.

DOI: 10.1016/j.msea.2008.09.107

[10] E.G. Campari, S. Amadori, E. Bonetti, R. Berti, R. Montanari, Anelastic Behavior of Small Dimensioned Aluminum. Metals 9(5) (2019) 549.

DOI: 10.3390/met9050549

[11] E. Bonetti, M. Cabibbo, E.G. Campari, R. Montanari, Correlation between anelastic response and microstructure of 5N-Al thin foils. Journal of Alloys and Compounds 15 (2021).

DOI: 10.1016/j.jallcom.2021.159693

[12] E. Bolli, S. Kaciulis, A.Mezzi, R.Montanari, A. Varone, XPS investigation of 5N purity Al thin foils for MEMS devices, Surface and Interface Analysis (2022).

DOI: 10.1002/sia.7150

[13] M. Cabibbo, P. Deodati, S. Libardi, A. Molinari, R. Montanari, N. Ucciardello, Damping of FeMo Alloys Obtained from SPS Sintering of Nanostructured Powders. MSF (2008).

DOI: 10.4028/www.scientific.net/msf.604-605.203

[14] M. Cabibbo, C. de Crescenzo, R. Montanari, M. Richetta, A. Varone, Direct monitoring of porosity evolution by dynamic modulus measurements: Three case studies. European Journal of Materials 3 (2023).

DOI: 10.1080/26889277.2023.2208159

[15] M. Richetta, A. Varone A Focus on Dynamic Modulus: Effects of External and Internal Morphological Features, Metals 11 (2021)

DOI: 10.3390/met11010040

[16] M. Cabibbo, R. Montanari, A. Pola, M. Tocci, A. Varone, Mechanical spectroscopy study of as-cast and additive manufactured AlSi10Mg. Journal of Alloys and Compounds 914 (2022)

DOI: 10.1016/j.jallcom.2022.165361

[17] M. Tocci, A.Varone, R. Montanari, A. Pola, Study of High Temperature Properties of AlSi10Mg Alloy Produced by Laser-Based Powder Bed Fusion, Materials Science Forum 1016 (2021)1485 – 1491202.

DOI: 10.4028/www.scientific.net/MSF.1016.1485

[18] L. Del-Río, M.L. Nó, A. Sota, I. Perez-Casero, J.F. Gómez-Cortés, M. Pérez-Cerrato, A. Veiga, I. Ruiz-Larrea, S.Ausejo, N. Burgos, J.M. San Juan, Internal friction associated with ε martensite in shape memory steels produced by casting route and through additive manufacturing: Influence of thermal cycling on the martensitic transformation, Journal of Alloys and Compounds 919 (2022).

DOI: 10.1016/j.jallcom.2022.165806

[19] P.A. Hooper, Melt pool temperature and cooling rates in laser powder bed fusion. Additive Manufacturing 22 (2018)548–559.

DOI: 10.1016/j.addma.2018.05.032

[20] R. Montanari, A. Palombi, M. Richetta, A. Varone, Additive Manufacturing of Aluminum Alloys for Aeronautic Applications: Advantages and Problems, Metals 13(2023)716.

DOI: 10.3390/met13040716

[21] P. Deodati, R. Donnini, R. Montanari, N. Ucciardello, Microstructural investigation on tungsten for applications in future nuclear fusion reactors. Materials Science Forum 706-709 (2012) 835-840.

DOI: 10.4028/www.scientific.net/MSF.706-709.835

[22] S. Amadori, E.G. Campari, A.L. Fiorini, R. Montanari, L. Pasquini, L. Savini, E. Bonetti, Automated resonant vibrating reed analyzer apparatus for a non destructive characterization of materials for industrial applications. Materials Science & Engineering 442(1) (2006) 543–546. https://doi.org/.

DOI: 10.1016/j.msea.2006.02.210

[23] https://markforged.com/it/3d-printers/metal-x

[24] A. Lanzutti, F. Sordetti, R. Montanari, A. Varone, E. Marin, F. Andreatta, S. Maschio, E. Furlani, M.Magnam, E.Vaglio, E.Pakhomova, M. Sortino, G.Totis , L. Fedrizzi, Effect of powder recycling on inclusion content and distribution in AISI 316L produced by L-PBF technique, Journal of Materials Research and Technology 23 (2023) 3638–3650.

DOI: 10.1016/j.jmrt.2023.02.017

[25] R. Montanari, A. Lanzutti, M. Richetta, J. Tursunbaev, E. Vaglio, A.Varone, C. Verona, Plasma Carburizing of Laser Powder Bed Fusion Manufactured 316 L Steel for Enhancing the Surface Hardness. Coatings 12 (2022).

DOI: 10.3390/coatings12020258