J. Mater. Sci. Technol. ›› 1992, Vol. 8 ›› Issue (6): 417-420.

• • 上一篇    下一篇

Effect of Ni on Sintering Characteristics of Short Cast Iron Fibre

LI Dongchun TIAN Yongjun CHEN Shizhen YU Dongli HE Julong ** Yanshan University,Qinhuangdao,066004,China+ To whom correspondence should be addressed   

  1. YanshanUniversity,Qinhuangdao,066004,China;YanshanUniversity,Qinhuangdao,066004,China;YanshanUniversity,Qinhuangdao,066004,China;YanshanUniversity,Qinhuangdao,066004,China;YanshanUniversity,Qinhuangdao,066004,China
  • 收稿日期:1992-11-28 修回日期:1992-11-28 出版日期:1992-11-28 发布日期:2009-10-10

Effect of Ni on Sintering Characteristics of Short Cast Iron Fibre

LI Dongchun TIAN Yongjun CHEN Shizhen YU Dongli HE Julong ** Yanshan University,Qinhuangdao,066004,China+ To whom correspondence should be addressed   

  • Received:1992-11-28 Revised:1992-11-28 Online:1992-11-28 Published:2009-10-10

RichHTML

0

PDF (PC)

482

摘要： <正> Nickel,as the carrier through which Fe atomsdiffuse,obviously enhances the densification ofsintered compact containing short cast iron fibre.When Ni content is above 4.5 wt-% there are someaustenites in microstructure at room temperature,discontinuous cementite networks at the interfacesbetween austenites and pearlites,free graphite pre-cipitated in austenite and pores andWidmannst(?)tten carbide precipitated in austenite.When Ni content is about 12 wt-%,it leads to de-crease in densification ratio and change in fracturemorphology of sintered compact from ductile tobrittle.

Abstract: Nickel,as the carrier through which Fe atoms diffuse,obviously enhances the densification of sintered compact containing short cast iron fibre. When Ni content is above 4.5 wt-% there are some austenites in microstructure at room temperature, discontinuous cementite networks at the interfaces between austenites and pearlites,free graphite pre- cipitated in austenite and pores and Widmannst(?)tten carbide precipitated in austenite. When Ni content is about 12 wt-%,it leads to de- crease in densification ratio and change in fracture morphology of sintered compact from ductile to brittle.

Key words: short metal fibre, sintering, densification