2026-05-15T16:38:26Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/74882024-04-12T11:33:00Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4505

Alegre Calderón, Jesús Manuel 16 600 0000-0003-3629-2570 Díaz Portugal, Andrés 147 600 0000-0002-2344-1955 García, Ricardo 5d07831f-55e1-4480-b921-1bc016112f37 600 Peral, Luis Borja a7e7ea85-6b7e-4789-a6cf-f94804f57986 600 Cuesta Segura, Isidoro Iván 135 600 0000-0003-4088-9302 2023-03-02T13:15:10Z 2023-03-02T13:15:10Z 2022-10 0142-1123 http://hdl.handle.net/10259/7488 10.1016/j.ijfatigue.2022.107097 Hot Isostatic Pressing (HIP) is a thermomechanical post-processing technique widely used in Additive Manufacturing parts to reduce internal defects, such as entrapped-gas-pores or lack-of-fusion, which have a great influence on the mechanical and fatigue properties of the material. In this paper, the effect of a non-conventional HIP-cycle on the fatigue behavior of a Ti-6Al-4V alloy manufactured by Selective Laser melting (SLM) is studied. The HIP-cycle examined in this study is carried out at pressure of 200 MPa and a temperature of 850 ◦C for 2 h. Moreover, the cooling process is faster than that obtained from conventional furnace cooling rates, with the aim to limit the microstructural coarsening effects that affect the fatigue behavior. For the study, an extensive experimental fatigue program was carried out which included a first batch of SLM specimens tested under as-built conditions, a second batch of SLM specimens subjected to the present HIP process, and a third batch of specimens of a reference wrought processed material obtained by rolling and annealing processes. The microstructure of the material, before and after HIPping, is analyzed and a fractographic analysis is carried out to study the mechanism of crack initiation and its relation to the fatigue behavior. The results show that the present HIP-process allows for very good material densification, a microstructure that shows minimal coarsening effects, and good fatigue properties comparable to the conventional wrought processed material. The authors gratefully acknowledge financial support from the Junta de Castilla y León (Spain) through grant BU-002-P20, co-financed by FEDER funds. application/pdf eng Elsevier International Journal of Fatigue. 2022, V. 163, 107097 https://doi.org/10.1016/j.ijfatigue.2022.107097 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/ Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Ti-6A1-4V Hot isostatic pressing Selective Laser Melting Fatigue behavior Microstructure Ingeniería civil Civil engineering Effect of HIP post-processing at 850 °C/200 MPa in the fatigue behavior of Ti-6Al-4V alloy fabricated by Selective Laser Melting info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion International Journal of Fatigue 163 THUMBNAIL Alegre-ijf_2022.pdf.jpg Alegre-ijf_2022.pdf.jpg IM Thumbnail image/jpeg 4880 https://riubu.ubu.es/bitstream/10259/7488/4/Alegre-ijf_2022.pdf.jpg f69df5b34121c0c93200f2b7d9fe2bd1 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/7488/3/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/7488/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Alegre-ijf_2022.pdf Alegre-ijf_2022.pdf application/pdf 13454776 https://riubu.ubu.es/bitstream/10259/7488/1/Alegre-ijf_2022.pdf 2b7edcbd95cca0a87b5753d8f50ad4b4 MD5 1 10259/7488 oai:riubu.ubu.es:10259/7488 2024-04-12 13:33:00.088 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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