Newly Developed Electrochemical Evaluation Method of Temper Embrittlement of Cr-Mo-V Steel and 2.25 Cr-1 Mo Steel

Yutaka Watanabe, Tetsuo Shoji

研究成果: Article査読

抄録

A nondestructive electrochemical method is developed for detection and evaluation of temper embrittlement of Cr-Mo-V Steel and 2.25 Cr-1 Mo steel. In this method, temper embrittlement can be detected and evaluated by the second peak of current density “IP2”: which appears in the anodic polarization curves measured in a calcium nitrate solution. In contrast to nonembrittled materials (couplings and de-embrittling heat-treated materials) which exhibited the dull and low second peak, the sharp and high second peak current appeared in the anodic polarization curves measured on embrittled materials. This increase in IP2 is caused by selective dissolution of embrittled (impurity-enriched) grain boundaries and that increase in IP2 has a good correlation with the shifts in FATT. Temper embrittlement can be nondestructively evaluated by IP2 measurements with high accuracy.

本文言語English
ページ(範囲)1233-1239
ページ数7
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series A
57
537
DOI
出版ステータスPublished - 1991
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

フィンガープリント

「Newly Developed Electrochemical Evaluation Method of Temper Embrittlement of Cr-Mo-V Steel and 2.25 Cr-1 Mo Steel」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル