Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
MICROSTRUCTURE CHARACTERIZATION AND STRENGTH ASSESSMENT OF A HEAT-TREATED SELECTIVE LASER MELTED 300-GRADE MARAGING STEEL
Submission Author:
Fabio Conde , SP , Brazil
Co-Authors:
Fabio Conde, Waldek Wladimir Bose Filho, Julian Escobar, André Tschiptschin, André Jardini, João Pedro Oliveira, Julian Arnaldo Avila Diaz
Presenter: Julian Arnaldo Avila Diaz
doi://10.26678/ABCM.COBEM2019.COB2019-0980
Abstract
Additive manufacture is a principle of building products by addition of materials rather than subtraction. Maraging 300 is an ultra-high strength steel with significant alloy addition presenting a martensitic matrix hardened by precipitation through ageing treatment, offering good toughness/strength ratio. In the present work, a maraging 300 was processed by selective laser melting (SLM) and an investigation was carried out on mechanical properties and microstructural features. A post heat treatment was applied aiming homogenization, grain refinement, precipitation of intermetallics compounds and martensite-to-austenite reversion. Microstructural characterization and mechanical properties assessment were conducted by electron backscattered diffraction and tensile tests, respectively.
Keywords
18Ni, Maraging 300, Additive manufacturing, Selective laser melting
