Investigação microestrutural de uma blindagem metálica

Materia

article

Suzane de Sant’ Ana Oliveira¹  Karollyne Gomes de Castro Monsores¹  Anderson Oliveira da Silva¹  Pedro Guilherme Passalini¹  Géssica da Silva Nicolau¹  Ricardo Pondé Weber¹ 

[1]Seção de Engenharia de Materiais

关键词: Metallic armor;    Thermal Treatments;    Metallographic analysis;   

DOI  :  10.1590/S1517-707620210003.13011

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

Steel is still the most used material in the production of ballistic armor, especially military armor. These materials, when subjected to appropriate heat treatments, allow the improvement of their performance as ballistic shielding. The quenching and tempering heat treatments allow to obtain the tempered martensitic microstructure with high hardness without loss in toughness, antagonistic properties for the steels and fundamental for a shield. However, the choice of the chemical composition of the steel and / or inadequate heat treatments can generate microstructures that impair the mechanical properties mentioned above. This work aimed to present the analysis of the appearance of microstructures that affect the resistance of the ballistic shield material after the heat treatment of quenching and tempering at tempering temperatures of 310 °C; 425 °C and 610 °C. The microstructure of the material used in this work, after the thermal treatments, was investigated by means of electron and optical microscopy, as well as by X-ray diffraction, indicating microstructural changes in the studied material relevant to the ballistic properties. The tempering treatments presented in this work with higher temperatures did not reach the minimum hardness established, as a rule, for a ballistic material.

【 授权许可】

CC BY