Multiscale effect of thermomechanical loads on the NbC-Steel microstructure obtained by SPS

Multiscale effect of thermomechanical loads on the NbC-Steel microstructure obtained by SPS

Seriacopi, Vanessa; Tertuliano, Ana Julia de Oliveira; Boidi, Guido; Fornaris, Ivan García; Machado, Izabel Fernanda

Full Article:

The ABAQUS commercial software was used to simulate by Finite Element Method (FEM) the stress and the strain fields due to the thermal and mechanical loads applied in the tool microstructure throughout hot forging operations. Therefore, the macroscale (loads applied in the tool) was adapted to the microscale (stress and strain developed in the microstructural features). Material analyzed in this study which are prospective to be used as tools, consisted of NbC and tool steel powders, which were mixed, and consolidated by SPS technique (Spark Plasma Sintering) NbC-Steel microstructure was firstly characterized by SEM and, thus it was meshed by OOF2 software (NIST). Subsequently, the microstructure was firstly allowed to undergo evaluation of different aspects and critical stress and strain, which can favored microstructural damage in the tool material.

The ABAQUS commercial software was used to simulate by Finite Element Method (FEM) the stress and the strain fields due to the thermal and mechanical loads applied in the tool microstructure throughout hot forging operations. Therefore, the macroscale (loads applied in the tool) was adapted to the microscale (stress and strain developed in the microstructural features). Material analyzed in this study which are prospective to be used as tools, consisted of NbC and tool steel powders, which were mixed, and consolidated by SPS technique (Spark Plasma Sintering) NbC-Steel microstructure was firstly characterized by SEM and, thus it was meshed by OOF2 software (NIST). Subsequently, the microstructure was firstly allowed to undergo evaluation of different aspects and critical stress and strain, which can favored microstructural damage in the tool material.

Palavras-chave:

DOI: 10.5151/matsci-mmfgm-140-f

Referências bibliográficas

• [1] 1. R. Orru, R. Licheri, A.M. Locci, A. Cincotti, G. Cao. Consolidation/synthesis of materials by electric current activated/assisted sintering Materials Science and Engineering R 63 (2009) 127–287
• [2] 2. N.K. Fukumasu, P.L. Pelegrino, G. Cueva, R.M. Souza, A. Sinatora. Numerical analysis of the stresses developed during the sliding of a cylinder over compact graphite iron. Wear. 259 (2005) 1400-1407.
• [3] 3. Matweb (Material Property), Bohler-Uddeholm BÖHLER S290 MICROCLEAN® High Speed Steel. Further information available at: Andlt; http://www.matweb.com/search/DataSheet.aspx?MatGUID=7df03141288648cbb9dad9ad5203619aAndgt;. (2014)
• [4] 4. Hysitron Inc. (Nanomechanics Research Lab.), Sample Analysis Report - Document NRL-D-575. (2013).
• [5] 5. W.S. Williams, The thermal conductivity of metallic ceramics. JOM. 50 (1998) 62-66.
• [6] 6. C.K. Jun and P.T.B. Shaffer, Thermal expansion of niobium carbide, hafnium carbide and tantalum carbide at high temperatures. Journal of the Less Common Metals. 24 (1971) 323-327.
• [7] 7. D.R. Lide, CRC Handbook of chemistry and physics. CRC Press, Boca Raton. FL, 79th ed., 1998.
• [8] 8. C.Z. Duan, T. Dou, Y.J. Cai, Y.Y. Li. Finite element simulation and experiment of chip formation process during high speed machining of AISI 1045 hardened steel. International Journal of Recent Trends in Engineering. 5 (2009) 46-50.
• [9] 9. C.R.S. da Silva, M. Boccalini. Thermal cracking of multicomponent white cast iron. Materials Science and Technology. 21 (2005) 565-573.
• [10] 10. NIST (National Institute of Standards and Technology), OOF: Finite element analysis of microstructures. Further information available at: Andlt;http://www.ctcms.nist.gov/oof/oof2/Andgt;. (2014).

Como citar:

Seriacopi, Vanessa; Tertuliano, Ana Julia de Oliveira; Boidi, Guido; Fornaris, Ivan García; Machado, Izabel Fernanda; "Multiscale effect of thermomechanical loads on the NbC-Steel microstructure obtained by SPS", p-70-73. In: Proceedings of the 13th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials [=Blucher Material Science Proceedings, v.1, n.1]. São Paulo: Blucher, 2014.
ISSN 23589337, DOI 10.5151/matsci-mmfgm-140-f