長期間使用した9Cr系鋼構造物の電気化学計測を用いたじん性評価
英字タイトル:
Electrochemical technique for toughness evaluation on 9Cr type steel components by long-term used
著者:
西川 聡 Satoru NISHIKAWA 大北 茂 Shigeru OHKITA 山口 篤憲 Atsunori YAMAGUCHI
発刊日:
公開日:
Cr type steelElectrochemical techniqueKey WordsLaves phasePeak of current densityToughness
Electrochemical technique for toughness evaluation on 9Cr type steel components by long-term used
著者:
西川 聡 Satoru NISHIKAWA 大北 茂 Shigeru OHKITA 山口 篤憲 Atsunori YAMAGUCHI
発刊日:
公開日:
カテゴリ: 第5回
キーワードタグ:Cr type steelElectrochemical techniqueKey WordsLaves phasePeak of current densityToughness
概要
The weld metal of modified 9Cr-1 Mo steels is most low toughness in its MIG weld joint. It is necessary to pay attention to the toughness of weld metal because of securing to ughness of weld joint. The weld metal of precipitated Laves phase after long-term thermal aging decreased toughness. Peak of the current density (Ip) in the electrochemical t echnique was appeared in the weld metals of precipitated a lot of large Laves phase. It seemed that appearance of lp was caused by the dissolution of the Laves phase. The goo d correlation between toughness and Ip was observed. Therefore, it can be said that toughness of the weld metals suppose to be predict using Ip of electrochemical technique.
