An analysis on CNC machined surface roughness between AA7475 and AA7475/ fly ash composite. Journal of technical research and development, [S. l.], v. 1, n. 3, p. 15–24, 2023. Disponível em: https://jtrd.mcdir.me/index.php/jtrd/article/view/227.. Acesso em: 4 jul. 2024.