Environmentally Assisted Cracking of Low Alloy Steel under Cyclic Straining. 3rd Report. A Model for the Life Prediction of Crack Initiation Based on Charge Transfer.

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  • 低合金鋼の変動ひずみ下の環境助長割れ　第３報　　腐食電流に基づくき裂発生寿命評価モデル
  • テイゴウキン コウ ノ ヘンドウ ヒズミカ ノ カンキョウ ジョチョウ ワレ ダイ3ポウ フショク デンリュウ ニ モトヅク キレツ ハッセイ ジュミョウ ヒョウカ モデル

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Abstract

The corrosion current from strained metal is considered as the major cause for the substantial reduction of crack initiation life due to exvironmentally assisted cracking. A crack initiation life prediction for environmentally assisted cracking was proposed based on the charge transfer. This method can quantitatively incorporate mechanical factors such as strain rate, strain range, strain hold time as well as the electric conductivity of corrosive environment.

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