真空气体雾化Fe-Cr-Ni-W-B球形粉末流动性调控研究

Study on Flowability Regulation of Vacuum Gas-Atomized Fe-Cr-Ni-W-B Spherical Powder.

作者信息

Yu Pengfei, Li Jun, Liu Ying

机构信息

School of Materials Science and Engineering, Sichuan University, Chengdu 610065, China.

出版信息

Materials (Basel). 2024 Mar 8;17(6):1264. doi: 10.3390/ma17061264.

DOI:10.3390/ma17061264

PMID:38541418

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10972231/

Abstract

High-quality Fe-Cr-Ni-W-B spherical powder is crucial for the powder metallurgy preparation of high-strength and tough Fe-Cr-Ni-W-B alloys. In this study, the controlled preparation of high-quality Fe-Cr-Ni-W-B spherical powder was achieved using the vacuum gas atomization method. The effects and mechanisms of atomization gas pressure, the melt nozzle inner diameter, and heat treatment temperature on the microstructure and flowability of Fe-Cr-Ni-W-B spherical powder were systematically investigated. By optimizing process parameters, spherical Fe-Cr-Ni-W-B powder with a sphericity of 95.1% and a flowability of 15.88 s/50 g was obtained, laying the foundation for the powder metallurgy preparation of high-strength and tough Fe-Cr-Ni-W-B alloys.

摘要

高质量的Fe-Cr-Ni-W-B球形粉末对于高强度、高韧性Fe-Cr-Ni-W-B合金的粉末冶金制备至关重要。本研究采用真空气体雾化法实现了高质量Fe-Cr-Ni-W-B球形粉末的可控制备。系统研究了雾化气体压力、熔体喷嘴内径和热处理温度对Fe-Cr-Ni-W-B球形粉末微观结构和流动性的影响及作用机制。通过优化工艺参数，获得了球形度为95.1%、流动性为15.88 s/50 g的Fe-Cr-Ni-W-B球形粉末，为高强度、高韧性Fe-Cr-Ni-W-B合金的粉末冶金制备奠定了基础。