| Texto completo | |
| Autor(es): |
Oliveira, Adriel P.
[1]
;
Lima, Luiz H. Q. R.
[2]
;
Felipe, Bianca C. A.
[2]
;
Bolfarini, Claudemiro
[2, 1]
;
Coelho, Reginaldo T.
[3]
;
Gargarella, Piter
[2, 1, 4]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Fed Univ Sao Carlos UFSCar, Dept Mat Engn DEMa, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Sao Carlos Engn Sch, Dept Prod Engn, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil
[4] Fed Univ Sao Carlos UFSCar, Ctr Characterizat & Dev Mat CCDM, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 15, p. 3598-3609, NOV-DEC 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Due to its high strength and wear resistance and good fracture toughness at low and high temperatures, AISI H13 tool steel has been widely used to fabricate components such as injection molds, die casting dies, and hot forging tools. Components with complex geometries can be produced by additive manufacturing (AM); however, the success of this manufacture depends on the formed microstructure and mechanical properties, which are associated with the process parameters. The mechanical properties of H13 tool steel processed by AM reported in the literature are limited to those obtained through hardness and tensile tests. Thus, this study aims to correlate the bending properties of H13 tool steel with its microstructure and process parameters when processed by the Powder Bed Fusion (PBF) technique. The samples were produced with different energy densities (approximately 200, 400, and 600 J/mm(3)) and analyzed by XRD, OM, SEM, and ACOM-TEM. The amount of retained austenite in the cellular microstructure and the porosity decreased as the energy density increased. The sample manufactured with 400 J/mm(3) presented the highest density and bending stress values. In contrast, the sample produced with 600 J/mm(3) showed a smaller number of defects and more extensive deformation before fracture. This behavior was explained considering the fraction of retained austenite, intrinsic tempering, and presence of defects. The fracture mechanism comprised a mixture of cleavage and dimple formation. This study demonstrates that the bending properties of H13 tool steel processed by PBF are directly related to the resulting microstructure and process parameters used to fabricate the parts. (C) 2021 Published by Elsevier B.V. (AU) | |
| Processo FAPESP: | 18/15659-1 - Fusão seletiva a laser de aço ferramenta H13 |
| Beneficiário: | Adriel Pugliesi de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |
| Processo FAPESP: | 16/11309-0 - Estudo, desenvolvimento e aplicação de processo híbrido: Manufatura Aditiva (Ma) + High Speed Machining/Grinding (HSM/G) |
| Beneficiário: | Reginaldo Teixeira Coelho |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 17/27031-4 - Influência de parâmetros de processo nas características metalúrgicas de peças fabricadas por manufatura aditiva |
| Beneficiário: | Piter Gargarella |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |