The environmental effects exerted more detrimental influence on the HCF behavior than on the stage II cracking behavior for the given alloys.

• 对裂缝成长而言，提高溶液温度会增加裂缝之表面活化能以及腐蚀速率，并促使氢脆之发生，因此会明显提升长裂缝之成长速率。