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作者:

Hou, J.-Q. (Hou, J.-Q..) | Fu, H.-G. (Fu, H.-G..) (学者:符寒光) | Jiang, Y.-H. (Jiang, Y.-H..) | Zhou, R. (Zhou, R..) | Cen, Q.-H. (Cen, Q.-H..)

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摘要:

Five kinds of B-bearing high speed steel roll alloy was designed and prepared. The microstructure and properties of B-bearing high speed steel with different composition and temper-treatment process were investigated by the way of optical microscopy (OM) , scanning electron microscopy (SEM) , X-ray diffraction (XRD) and hardness measurement , impact test and abrasion test. The results show that as-cast microstructure of B-bearing high speed steel consists of martensite matrix, retained austenite and borocarbide. Hardness of as-cast B-bearing high speed steel excels HRC 64. The eutectic borocarbide is distributed in a network along the grain boundary. After RE-Mg-Ti compound modification, the networks of borocarbide is broken. The hardness of B-bearing high speed steel roll alloy gradually decreases with the increase of tempering temperature. Under the same conditions, the impact toughness of unmodified B-bearing high speed steel roll alloy is slightly lower than that of modified alloy. The wear resistance of modified B-bearing high speed steel roll alloy is greater than that of high carbon high vanadium high speed steel roll alloy.

关键词:

Boron alloying; High speed steel roll; Modification; Tempering; Wear resistance

作者机构:

  • [ 1 ] [Hou, J.-Q.]School of Materials Science and Technology, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Fu, H.-G.]School of Materials Science and Technology, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Jiang, Y.-H.]School of Materials Science and Technology, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
  • [ 4 ] [Zhou, R.]School of Materials Science and Technology, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
  • [ 5 ] [Cen, Q.-H.]School of Materials Science and Technology, Kunming University of Science and Technology, Kunming 650093, Yunnan, China

通讯作者信息:

  • [Hou, J.-Q.]School of Materials Science and Technology, Beijing University of Technology, Beijing 100124, China

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来源 :

Journal of Iron and Steel Research

ISSN: 1001-0963

年份: 2012

期: 8

卷: 24

页码: 38-43,62

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