鋳造工学
Online ISSN : 2185-5374
Print ISSN : 1342-0429
ISSN-L : 1342-0429
最新号
選択された号の論文の2件中1~2を表示しています
研究論文
技術論文
  • ゴ フィン キン ルアン, 小泉 維昭, 成田 祐一, 水野 邦明, 山田 豊, 奥山 哲也
    2021 年 93 巻 1 号 p. 11-19
    発行日: 2021/01/25
    公開日: 2021/02/01
    ジャーナル 認証あり

      It has already been reported that the use of a chiller which suppresses the occurrence of internal casting defects in cast products of 27%Cr cast iron results in the deterioration of impact-wear resistance in the as cast state. In this paper, impact-wear behavior of 27%Cr cast iron was investigated after quenching at various temperatures to improve the impact wear resistance. Evaluation of impact-wear resistance was based on wear loss and decrease of thickness using air blasting machine. Microstructural analysis was performed using a scanning electron microscope with energy dispersive X-ray spectrometer, X-ray diffractometer and ferrite meter. Quenching at temperatures over 1323K results in improved impact wear resistance, as compared with the as cast state. Below that temperature, impact-wear becomes severe. This can be explained by the change in the volume fraction of retained austenite and martensite in the matrix and the self-temper softening of martensite caused by the generation of impingement heat between abrasive media and experimental samples.

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