Studies on Heat Treatment of TiC-50Ni-Cr-Co Cermet

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  • TiC-50Ni-Cr-Coサーメットの熱処理について
  • TiC-50Ni-Cr-Co サーメット ノ ネツ ショリ ニ ツイテ

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Abstract

The effects of heat treatment on some room-temperature properties of 1280°×1 hr vacuum sintered TiC-50Ni-Cr-Co (Ni/Cr/Co=3/1/1) cermet were studied. The variation of transverse-rupture strength, hardness, X-ray parameter, curie temperature and microstructure of the alloy by heating in vacuum at 950∼1260°C for 5∼25 hrs or by quenching from 950∼1280°C was also observed. The main results obtained were as followed: (1) The change of the properties was closely related to the precipitation of chrome carbides in the cermet but except this, the nature of the variation was almost similar to thar in TiC-Ni cermet previously reported. (2) A more pertinent binder composition of the cermet was thought desirable, since its strength decreased after prolonged heating.

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