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低氧超细粉末制备高性能粉末高速钢
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北京科技大学

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中央高校基本科研业务费专项资金项目(项目号FRF-TP-16-017A1)


PM high speed steel with high performance manufactured by super-fine powder with low oxygen content
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University of Science and Technology Beijing

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    摘要:

    通过电渣重熔-雾化制粉技术制备得到低氧、超细高速钢粉末,采用无包套-热等静压技术制备得到高性能粉末高速钢。研究了不同粒度、不同氧含量高速钢粉末对烧结特性的影响,对组织和性能进行了测试和分析。结果表明,高速钢粉末的平均粒度小于12 μm,氧含量小于100 ppm,烧结致密化后组织均匀、碳化物细小,经热处理后抗弯强度达4200 MPa,冲击功达22 J,硬度达65 HRC。

    Abstract:

    In this paper, super-fine high-speed steel powders with low oxygen content were prepared by electroslag remelting and atomizing technology, and high-performance PM high-speed steels were fabricated by non-capsule hot isostatic pressing technique. The effects of different particle size and oxygen content of high-speed steel powders on sintering characteristics, microstructure and performance were studied. The results showed that due to the high-speed steel powder with the particle size of less than 12 μm and lower than 100 ppm oxygen, the as-sintered microstructure was uniform and carbides were fine. After heat treatment, the bend strength, impact toughness and hardness reached 4200 MPa, 22 J, and 65 HRC, respectively.

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孙海霞,陈存广,张振威,郭志猛.低氧超细粉末制备高性能粉末高速钢[J].稀有金属材料与工程,2019,48(10):3246~3251.[Sun Haixia, Chen Cunguang, Zhang Zhenwei, Guo Zhimeng. PM high speed steel with high performance manufactured by super-fine powder with low oxygen content[J]. Rare Metal Materials and Engineering,2019,48(10):3246~3251.]
DOI:10.12442/j. issn.1002-185X.20180341

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  • 收稿日期:2018-04-07
  • 最后修改日期:2018-04-24
  • 录用日期:2018-05-18
  • 在线发布日期: 2019-11-01
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