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低氧超細(xì)粉末制備高性能粉末高速鋼
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北京科技大學(xué)

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中央高?；究蒲袠I(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金項(xiàng)目(項(xiàng)目號(hào)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:

    通過(guò)電渣重熔-霧化制粉技術(shù)制備得到低氧、超細(xì)高速鋼粉末,采用無(wú)包套-熱等靜壓技術(shù)制備得到高性能粉末高速鋼。研究了不同粒度、不同氧含量高速鋼粉末對(duì)燒結(jié)特性的影響,對(duì)組織和性能進(jìn)行了測(cè)試和分析。結(jié)果表明,高速鋼粉末的平均粒度小于12 μm,氧含量小于100 ppm,燒結(jié)致密化后組織均勻、碳化物細(xì)小,經(jīng)熱處理后抗彎強(qiáng)度達(dá)4200 MPa,沖擊功達(dá)22 J,硬度達(dá)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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孫海霞,陳存廣,張振威,郭志猛.低氧超細(xì)粉末制備高性能粉末高速鋼[J].稀有金屬材料與工程,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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歷史
  • 收稿日期:2018-04-07
  • 最后修改日期:2018-04-24
  • 錄用日期:2018-05-18
  • 在線發(fā)布日期: 2019-11-01
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