Influence of Moisture on the Properties of AlSi10Mg Powder for Laser Powder Bed Fusion

Autor(es)

Lucas Salomão Peres ^[1] ; Piter Gargarella ; Marcus Vinicius Paiva ^[3] ; Ariano De Giovanni Rodrigues ^[4] ; Marcin Adamiak ^[5] ; Gilmar Ferreira Batalha

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. Escola Politécnica de Engenharia. Departamento de Engenharia Mecânica - Brasil

^[3] Fundação de Apoio ao Instituto de Pesquisa Tecnológicas - Brasil

^[4] Universidade Federal de São Carlos. Departamento de Física - Brasil

^[5] Silesian University of Technology. Faculty of Mechanical Engineering. Department of Engineering & Biomedical Materials - Polônia

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 27, 2024-05-27.

Resumo

This study explores the behavior of aluminum powder in laser powder bed fusion (LPBF) for additive manufacturing. Focusing on AlSi10Mg powders, the research investigates the effects of environmental conditions, such as temperature and humidity, on crucial properties like moisture content, fluidity, density, and agglomeration. Comprehensive tests, including particle size analysis and fluidity assessments, were conducted. Results showed increased flow time in the Carney funnel fluidity test after storage, but flow properties were maintained under high-temperature, low-humidity conditions. High humidity led to recurrent agglomerate formation. Moisture content analysis aligned with literature findings. Conclusively, these tests provide a reference for material acceptance and aid in supplier comparison for improved machine fluidity. While temperature and humidity impact aluminum oxide formation, humidity's greater relevance affects powder fluidity and quality. Other factors mentioned may cause permanent damage to the aluminum powder. (AU)

• Processo FAPESP: 17/27031-4 - Influência de parâmetros de processo nas características metalúrgicas de peças fabricadas por manufatura aditiva
• Beneficiário: Piter Gargarella
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores