Investigation of the impact of process parameters and thermal treatments on mechanical properties and microstructure of ScanCromAl ® manufactured via powder bed fusion laser beam process

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t Pub Date : 2024-09-24 DOI:10.1016/j.jmrt.2024.09.189

Raúl Gómez, Jon Aranzabe, Fermin Garciandia, Ane Miren Mancisidor, Maria San Sebastian

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引用次数: 0

Abstract

This study explores the processability window of a newly developed aluminium alloy for laser beam powder bed fusion (PBF-LB/M). The impact of the volumetric energy density on the melt pool shape, microstructure, and mechanical properties of manufactured parts are evaluated. Additionally, thermal treatments are optimized to tailor precipitation hardening mechanisms. The results demonstrate the promising potential of this material, exhibiting high relative density (>99.90%) and competitive mechanical properties for the thermally treated samples (UTS ranging from 486 MPa to 514 MPa with elongation of 11–30%). EBSD analysis reveals a characteristic bimodal microstructure of fine equiaxed grains at grain boundaries and elongated coarse grains aligned along the melt pool direction. This work provides valuable insights for tailoring the processing parameters and optimizing the performance of this novel material for diverse applications.

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研究工艺参数和热处理对通过粉末床熔融激光束工艺制造的 ScanCromAl ® 的机械性能和微观结构的影响

本研究探讨了一种新开发的用于激光束粉末床熔化（PBF-LB/M）的铝合金的加工性窗口。研究评估了体积能量密度对熔池形状、微观结构和制件机械性能的影响。此外，还对热处理进行了优化，以定制沉淀硬化机制。结果表明，这种材料潜力巨大，热处理后的样品具有较高的相对密度（99.90%）和良好的机械性能（UTS 从 486 兆帕到 514 兆帕不等，伸长率为 11-30%）。EBSD 分析揭示了一种特征性的双峰微观结构，即晶界处的细小等轴晶和沿熔池方向排列的细长粗粒。这项研究为定制加工参数和优化这种新型材料的性能提供了有价值的见解，可用于多种应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.