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

被引：0

作者：

Peres, Lucas Salomao ^{[1
]}

Gargarella, Piter ^{[2
,3
]}

Paiva, Marcus Vinicius ^{[4
]}

Rodrigues, Ariano De Giovanni ^{[5
]}

Adamiak, Marcin ^{[6
]}

Batalha, Gilmar Ferreira ^{[1
,6
]}

机构：

[1] Univ Sao Paulo, Dept Engn Mecan, Escola Politecn Engn, Av Prof Mello Moraes 2231, BR-05508900 Sao Paulo, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Engn Mat, Rod Washington Luis,km 235 SP-310, BR-13565905 Sao Carlos, SP, Brazil

[3] Univ Fed Sao Carlos, Ctr Caracterizacao & Desenvolvimento Mat, Rod Washington Luis,km 235 SP-310, BR-13565905 Sao Carlos, SP, Brazil

[4] Fundacao Apoio Inst Pesquisa Tecnol FIPT, Ave Engenheiro Heitor Antonio Eiras Garcia,448 Con, BR-05588000 Sao Paulo, SP, Brazil

[5] Univ Fed Sao Carlos, Dept Fis, Rodovia Washington Luis,km 235 SP-310 11, BR-13565905 Sao Carlos, SP, Brazil

[6] Silesian Tech Univ, Fac Mech Engn, Dept Engn & Biomed Mat, Lab Mat Res, Konarkiego 18A, PL-44100 Gliwice, Poland

来源：

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2024年 / 27卷

基金：

巴西圣保罗研究基金会;

关键词：

Laser Powder Bed Fusion; AlSi10Mg; moisture; humidity; Additive Manufacturing; powder;

D O I：

10.1590/1980-5373-MR-2023-0490

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：6

共 24 条

[1]

ASTM: American Society for Testing and Materials, 2016, ASTM B964-16: Standard Test Methods for Flow Rate of Metal Powders Using the Carney Funnel

[2]

ASTM: American Society for Testing and Materials, 2020, ASTM B822: Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering

[3]

ASTM: American Society for Testing and Materials, 2022, ASTM B417: Standard Test Method for Apparent Density of NonFree-Flowing Metal Powders Using the Carney Funnel

[4]

ASTM: American Society for Testing and Materials, 2022, ASTM B923-22: Standard Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry

[5]

ASTM: American Society for Testing and Materials, 2016, ASTM E203-16: Standard Test Method for Water Using Volumetric Karl Fischer Titration

[6] Effect of particle size distribution on the packing of powder beds: A critical discussion relevant to additive manufacturing [J].