通过原位析出硼化物颗粒改善等原子铌钽钛锌钼氢氧化钾粉末的 LPBF 加工性能

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-06-28 DOI:10.1016/j.matlet.2024.136944

G. Carlucci , J. Fiocchi , E. Ferrario , C.A. Biffi , R. Casati

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引用次数: 0

摘要

利用激光粉末床熔融（LPBF）技术，添加制造了等原子铌钽钛锌生物相容性难熔高熵合金（RHEA）。研究了在 LPBF 过程中降低 RHEA 裂纹敏感性的可能性。通过在 RHEA 粉末原料中添加纯硼，促进了硼化物颗粒的原位沉淀。这些沉淀限制了晶粒的生长，从而避免了裂纹的形成。

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Improvement of LPBF processability of equiatomic MoNbTaTiZr RHEA powder by in-situ precipitation of boride particles

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Improvement of LPBF processability of equiatomic MoNbTaTiZr RHEA powder by in-situ precipitation of boride particles

The equiatomic MoNbTaTiZr biocompatible and refractory high-entropy alloy (RHEA) was additively manufactured by laser powder bed fusion (LPBF). The possibility to reduce the cracking susceptibility of the RHEA during LPBF was investigated. By the addition of pure B to the RHEA powder feedstock, the in-situ precipitation of boride particles was promoted. These precipitates limited the grain growth, thus avoiding the formation of cracks.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive