Hardness distribution of molybdenum alloys which performed carbonization treatment

Tetsuji Hoshika, Yutaka Hiraoka, Masahiro Nagae, Jun Takada

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6 Citations (Scopus)

Abstract

Carbon addition by solid carburizing was performed for Mo and Mo-Ti alloys. The Vickers hardness tests was performed for these samples. The Vickers hardness tests estimated the hardness of a sample. The hardness distribution was investigated from the sample surface to the piece thickness direction of a sample. Existence, size and identification of precipitate was examined by TEM and EDX. The hardness of Mo added carbon was of the same grade compared with that of the recrystallized ones. The hardness of Mo-Ti added carbon alloys was higher than that of the recrystallized ones. The precipitate has not been checked in Mo. However the precipitate was able to be checked in Mo-Ti alloys. The precipitate was TiC. The increase in a hardness of Mo-Ti alloys added carbon was due to precipitation hardening. In the case of Mo-Ti alloys, there is possibility of internal carburizing.

Original languageEnglish
Pages (from-to)32-36
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume49
Issue number1
DOIs
Publication statusPublished - Jan 2002

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Keywords

  • Hardness
  • Internal carburizing
  • Mo-Ti alloy
  • Precipitation hardening
  • TiC

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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