| Analysis Of Aluminum And Silica Inclusion In Low And High Carbon Steels Igor Pereira1; Paulo Assis2; Gilberto Fernandes Lima3; Tiago Oliveira4; 1UNIVERSIDADE FEDERAL DE OURO PRETO, Ouro Preto, Brazil; 2UNIVERSITY OF OURO PRETO / REDEMAT, Ouro Preto, Brazil; 3UEMG-UNIVERSIDADE DO ESTADO DE MINAS GERAIS, João Monlevade, Brazil; 4REDEMAT UFOP, Itabirito, Brazil; PAPER: 176/Metals/Regular (Oral) SCHEDULED: 12:45/Tue. 29 Nov. 2022/Arcadia 1 ABSTRACT: Aiming at the development of increasingly special steels, the industry searches for a constant evolution in the control of its production processes. The demand for these steels has been growing constantly, as well as their requirements. The cleanliness is one of the most important requirements for high-performance steels. Therefore, non-metallic inclusions are one of the most studied associated problems in the steel industry. Non-metallic inclusions can cause exfoliation and cracking, impairing the mechanical properties of the steels and may even interrupt their manufacturing processes. Nonetheless, it is extremely important to carry out a metallic characterization of these inclusions, aiming at reducing or eliminating their deleterious effects. The inclusions of alumina and silica in samples of industrial steels with low (AISI 1020) and high (AISI 1070) carbon content were identified by Scanning Electron Microscope. Low and medium carbon steels showed inclusions that can drastically affect their mechanical properties. This paper presents its characterization, including the minimum in quantity, size, shape and dispersion of steel matrices used in the ASTM 45. It concluded that the market for these steels can be improved due to the characterization of these inclusions and the ways of their reduction. |
