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Abstrakty
In this research work, four groups of selective laser melted specimens were built from AlSi10Mg-0403 powder. Each group represents the direction with respect to the bed in which the specimens are built (X, Y, Z and 45° orientation). The mechanical properties of the specimens are characterized in terms of yield strength, ultimate tensile strength, Young’s modulus and elongation at break. In addition to that, the acoustic emission (AE) during the testing was monitored using wide-band high-accuracy piezoelectric sensors. The AE results were related to the mechanical characteristics of the specimens in terms of the acoustic parameter-based data, the peak amplitude, cumulative energy and count rate. The mechanical results show that the specimens built along the z direction have relatively lower strength and it can be attributed to the borderline porosity formed during the SLM process. The acoustic results can identify the critical points of failure under loading. The AE technique proves to be a powerful tool in characterizing the mechanical property and can unveil the concealed information which cannot be identified directly from the mechanical results.
Czasopismo
Rocznik
Tom
Strony
30--40
Opis fizyczny
Bibliogr. 30 poz., rys., wykr.
Twórcy
autor
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy
autor
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy
autor
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy
Bibliografia
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- [3] Brandl E, Heckenberger U, Holzinger V, Buchbinder D. Additive manufactured AlSi10Mg samples using selective laser melting (SLM): microstructure, high cycle fatigue, and fracture behaviour. Mater Design. 2012;34:159-69.
- [4] Leuders S, Thöne M, Riemer A, Niendorf T, Tröster T, Richard HA, Maier HJ. On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: fatigue resistance and crack growth performance. Int J Fatigue. 2013;48:300-7.
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- [10] Kok Y, Tan XP, Wang P, Nai MLS, Loh NH, Liu E, Tor SB. Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: a critical review. Mater Design. 2018;139:565-86.
- [11] Dang Z, Liu Y, Li W, Liang J. Orientation dependency for microstructure, geometric accuracy and mechanical properties of selective laser melting AlSi10Mg lattices. J Alloy Compd. 2019;791:490-500.
- [12] Barile C, Casavola C, Pappaleterra G, Pappalattere C. Fatigue damage monitoring by means of acoustic emission and thermography in Ti grade 5 specimens. Procedia Eng. 2015;114:487-92.
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- [14] Barile C, Casavola C, Campanelli SL, Renna G. Analysis of corrosion on sintered stainless steel: mechanical and physical aspects. Eng Fail Anal. 2019;95:273-82.
- [15] Barile C, Casavola C, Pappaleterra G, Pappalattere C. Acoustic emission analysis of aluminum specimen subjected to laser annealing. In: Rossi M et al. (eds) Residual stress, thermomechanics andinfrared imaging, hybrid techniques and inverse problems, Vol 8. Conference proceedings of the society for experimental mechanics series. Springer, Cham; 2014.
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- [18] Campanelli SL, Casalino G, Contuzzi N, Angelastro A, Ludovico AD. Analysis of the molten/solidified zone in selective laser melted parts. In: Proceedings of SPIE-the international society for optical engineering, San Francisco; 2014.
- [19] Barile C, Casavola C, Pappaleterra G, Pappalattere C. Analysis of crack propagation in stainless steel by comparing acoustic emissions and infrared thermography data. Eng Fail Anal. 2015;69:35-42.
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- [21] Siddique S, Imran M, Rauer M, Kaloudis M, Wycisk E, Emmelmann C, Walther F. Computed tomography for characterization of fatigue performance of selective laser melted parts. Mater Design. 2015;83:661-9.
- [22] Awd M, Siddique S, Johannsen J, Emmelmann C, Walther F. Very high-cycle fatigue properties and microstructural damage mechanisms of selective laser melted AlSi10Mg alloy. Int J Fatigue. 2019;125:55-69.
- [23] Wang P, Lei H, Zhu X, Chen H, Fang D. Influence of manufacturing geometric defects on the mechanical properties of AlSi10Mg alloy fabricated by selective laser melting. J Alloy Compd. 2019;789:852-9.
- [24] Ch SR, Raja A, Nadig P, Jayaganthan R, Vasa NJ. Influence of working environment and built orientation on the tensile properties of selective laser melted AlSi10Mg alloy. Mater Sci Eng A Struct. 2019;750:141-51.
- [25] Romano S, Brückner-Foit A, Brandāo A, Grumpigner J, Ghidini T, Beretta S. Fatigue properties of AlSi10Mg obtained by additive manufacturing: defect-based modelling and prediction of fatigue strength. Eng Fract Mech. 2018;187:165–89.
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- [27] Botvina LR, Tyutin MR, Petersen TB, Levin VP, Soldatenkov AP, Prosvirnin DV. Residual strength, microhardness, and acoustic properties of low-carbon steel after cyclic loading. J Mach Manuf Reliab. 2018;47:516-24.
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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)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-2461894b-9bf4-440c-88ec-cd7eeccf3352