arkhausen Noise monitoring of microstructure and surface residual stress in maraging steel manufactured by Powder Bed Fusion and agin

Autor(es)

de Oliveira, Amanda Rossi ^[1] ; Jovicevic-Klug, Matic ^{[2, 3]} ; de Oliveira, Vitor Furlan ^[4] ; Teixeira, Julio Carlos ^[1] ; Del Conte, Erik Gustavo ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ ABC, Engn Modeling & Appl Social Sci Ctr, Ave Estados, BR-09210550 Santo Andre 5001, SP - Brazil

^[2] Inst Met & Technol, Dept Metall Mat & Technol, Lepi Pot 11, Ljubljana 1000 - Slovenia

^[3] Max Planck Inst Eisenforsch GmbH, Dept Microstruct Phys & Alloy Design, Dusseldorf - Germany

^[4] Univ Sao Paulo, Escola Politecn, Ave Prof Luciano Gualberto, BR-05508010 Sao Paulo 380 - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY; v. 119, n. 3-4 NOV 2021.
• Citações Web of Science: 0

Resumo

Laser Powder Bed Fusion (LPBF) refers to processes conducted layerwise from material powder, which delivers innovative shapes. Nondestructive inspection can significantly benefit LPBF products, considering the tight application requirements. Magnetic Barkhausen Noise (MBN) is an interesting method due to its potential for nondestructive in situ inspections; however, it is still a concern for additively manufactured parts because of their complex microstructure. This study investigated how the MBN signal is influenced by the maraging steel microstructure and surface residual stress in LPBF parts with two build orientations (XYZ and YZX) before and after aging (480 degrees C for 3 h). Microstructural characterizations were performed with multiple microscopy techniques. Surface residual stress was assessed with X-ray diffraction, and the MBN was collected along two directions (theta 0 degrees and theta 90 degrees). Different correlation coefficients between surface residual stress and MBNenergy, varying between 0.53 (theta 0 degrees) and 0.98 (theta 90 degrees), could be mainly explained by surface stress states and some microstructural differences, like the columnar structures and weak crystallographic texture along build orientation. MBN envelope shapes also allow the comprehension of surface residual stress changes undistinguished with the MBNenergy. These findings clarified some potential uses of the MBN for inspecting Laser Powder Bed Fused materials. (AU)

• Processo FAPESP: 21/00553-6 - Manufatura avançada: investigação sobre o efeito dos gases do processo nas propriedades magnéticas e mecânicas de amostras do aço maraging 300 produzidas por fusão em leito de pó
• Beneficiário: Erik Gustavo Del Conte
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/11282-0 - Manufatura Avançada: investigação sobre o efeito dos parâmetros do processo na superfície de peças metálicas
• Beneficiário: Erik Gustavo Del Conte
• Modalidade de apoio: Auxílio à Pesquisa - Regular