Processing and characterization of nanostructured lightweight steels reinforced with TiB2 by additive manufacturing and powder metallurgy

• Grant number: 21/11537-1
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: April 01, 2022
• End date: March 31, 2023
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Claudemiro Bolfarini
• Grantee: André Luiz Vidilli
• Supervisor: Vicente Amigó Borrás
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Institution abroad: Universitat Politécnica de Valéncia (UPV), Spain
• Associated to the scholarship: 20/05049-1 - Design and evaluation of the mechanical properties of high modulus low-density steel - with formation of TiB2 in situ - processed by additive manufacturing and powder metallurgy, BP.DR

Abstract

The lightweight steels of the Fe-Mn-Al-C system were developed due to the demand of the automotive industry to combine high strength and ductility. The lower density in comparison to conventional steels is achieved by aluminum addition, which in solid solution increases the lattice parameter. However, aluminum is also responsible for a reduction of the Modulus of Elasticity, which is undesirable and must be restored. In this context, the introduction of ceramic reinforcement particles in metallic matrices has proved to be an effective strategy to increase the modulus. Currently, titanium diboride is being studied extensively as a reinforcement particle due to its excellent combination of physical and mechanical properties. In steels, TiB2 can be formed in-situ by an eutectic reaction, so that the size, distribution and morphology of the particles can be controlled by the cooling rate during solidification. Through additive manufacturing (AM) and powder metallurgy (P/M), it is possible to produce composites with uniform distribution of refined particles in a metallic matrix. The objective of this research internship is to produce two different compositions of a stiff, strong, light and ductile steels through the association of TiB2 particles on a FeMnAlC austenitic matrix by AM and P/M. This research internship is planned for a period of 12 months at the Materials Technological Institute of the Polytechnic University of Valencia (ITM - Instituto de Tecnología de Materiales - Universitat Politècnica de València) under the supervision of Prof. Dr. Vicente Amigó Borrás focusing on AM and P/M processing routes and characterization techniques. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DOS SANTOS, RAFAEL FORMENTON; ROSSI, MARIANA CORREA; VIDILLI, ANDRE LUIZ; BORRAS, VICENTE AMIGO; AFONSO, CONRADO RAMOS MOREIRA. Assessment of b stabilizers additions on microstructure and properties of as-cast b Ti-Nb based alloys. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 22, p. 14-pg., 2023-01-12. (18/18293-8, 21/11537-1, 21/03865-9)

ARANDA, V. A.; FIGUEROA, I. A.; AMIGO, V; GONZALEZ-OJEDA, R.; LOZADA, O.; VIDILLI, A. L.; OTANI, L. B.; GONZALEZ, G.. Effect of Mo on high entropy Ti-Nb-Zr-Ta alloy: Phase equilibria, microstructure and mechanical properties. Journal of Alloys and Compounds, v. 960, p. 10-pg., 2023-05-30. (21/11537-1)

AL HAWAJREH, G.; GONZALEZ, G.; ROMERO-RESENDIZ, L.; VIDILLI, A.; OTANI, L. B.; AMIGO, V.. Effect of the Ti/Ta ratio on the feasibility of porous Ti25 thorn x-Nb25-Zr25-Ta25-x (X1/4 0, 5, and 10) alloys for biomedical applications. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 24, p. 15-pg., 2023-04-24. (21/11537-1)