2026-05-11T13:31:51Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/75112024-04-12T11:42:23Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4505

Díaz Portugal, Andrés 147 600 0000-0002-2344-1955 Alegre Calderón, Jesús Manuel 16 600 0000-0003-3629-2570 Cuesta Segura, Isidoro Iván 135 600 0000-0003-4088-9302 Martínez Pañeda, Emilio 0e268b17-776b-4013-868b-7f8417bf1088 600 Zhang, Zhiliang 340389cd-b5dd-40a1-b044-15f7405aa0e3 600 2023-03-08T09:13:18Z 2023-03-08T09:13:18Z 2022-10 0167-8442 http://hdl.handle.net/10259/7511 10.1016/j.tafmec.2022.103510 Ti-6Al-4V is a titanium alloy with excellent properties for lightweight applications and its production through Additive Manufacturing processes is attractive for different industrial sectors. In this work, the influence of mechanical properties on the notch fracture resistance of Ti-6Al-4V produced by Selective Laser Melting is numerically investigated. Literature data is used to inform material behaviour. The as-built brittle behaviour is compared to the enhanced ductile response after heat treatment (HT) and hot isostatic pressing (HIP) post-processes. A Phase Field framework is adopted to capture damage nucleation and propagation from two different notch geometries and a discussion on the influence of fracture energy and the characteristic length is carried out. In addition, the influence of oxygen uptake is analysed by reproducing non-inert atmospheres during HT and HIP, showing that oxygen shifts fracture to brittle failures due to the formation of an alpha case layer, especially for the V-notch geometry. Results show that a pure elastic behaviour can be assumed for the as-built SLM condition, whereas elastic-plastic phenomena must be modelled for specimens subjected to heat treatment or hot isostatic pressing. The present brittle Phase Field framework coupled with an elastic-plastic constitutive analysis is demonstrated to be a robust prediction tool for notch fracture after different post-processing routes. Financial support from the Junta of Castile and Leon through grant BU-002-P20, co-financed by FEDER funds. E. Martínez-Pañeda was supported by an UKRI Future Leaders Fellowship (grant MR/V024124/1). A. Díaz wishes to thank the Nanomechanical Lab of NTNU for providing hospitality during his research stay. application/pdf eng Elsevier Theoretical and Applied Fracture Mechanics. 2022, V. 121, 103510 https://doi.org/10.1016/j.tafmec.2022.103510 info:eu-repo/grantAgreement/Junta de Castilla y León//BU-002-P20//Optimización de las técnicas de post-procesado para la mejora de propiedades mecánicas y de fatiga en componentes realizados mediante fabricación aditiva/ info:eu-repo/grantAgreement/UKRI//MR%2FV024124%2F1/GB/ Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Notch fracture Finite element modelling Phase Field Additive manufacturing Ti-6Al-4V Resistencia de materiales Ingeniería mecánica Strength of materials Mechanical engineering Notch fracture predictions using the Phase Field method for Ti-6Al-4V produced by Selective Laser Melting after different post-processing conditions info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Theoretical and Applied Fracture Mechanics 121 103510 THUMBNAIL Diaz-tafm_2022.pdf.jpg Diaz-tafm_2022.pdf.jpg IM Thumbnail image/jpeg 4951 https://riubu.ubu.es/bitstream/10259/7511/4/Diaz-tafm_2022.pdf.jpg 107542ab4206c39197f52670ba391ccd MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/7511/3/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/7511/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Diaz-tafm_2022.pdf Diaz-tafm_2022.pdf application/pdf 1978961 https://riubu.ubu.es/bitstream/10259/7511/1/Diaz-tafm_2022.pdf 98f65dbbc3f8683f20e0fba54ddee134 MD5 1 10259/7511 oai:riubu.ubu.es:10259/7511 2024-04-12 13:42:23.061 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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