Damage evolution and life modeling of hot corrosion environment on creep-fatigue of a directionally solidified nickel-based superalloy

被引：3
|
作者：
Hu, Jianhui [1 ]
Zhao, Gaole [1 ]
Li, Shaolin [1 ,2 ,3 ]
Qi, Hongyu [1 ,2 ]
Yang, Xiaoguang [1 ,2 ]
Shi, Duoqi [1 ,2 ]
机构：
[1] Beihang Univ, Sch Energy & Power Engn, Beijing, Peoples R China
[2] Beijing Key Lab Aeroengine Struct & Strength, Beijing, Peoples R China
[3] Beijing Key Lab Aeroengine Struct & Strength, Beijing 100191, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2023年 / 46卷 / 04期
基金：
中国国家自然科学基金;
关键词：
creep-fatigue; damage process; hot corrosion; life prediction; LOW-CYCLE FATIGUE; NI-BASED SUPERALLOY; CRACK-PROPAGATION; BRAZED JOINTS; BEHAVIOR; MECHANICS; PREDICTION; GROWTH; OXIDATION; STRENGTH;
D O I：
10.1111/ffe.13945
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This study developed a corrosion-creep fatigue-life-prediction methodology based on continuous-damage mechanics (CDM). A systematic investigation of the turbine-blade material DZ125 (a nickel-based superalloy) was conducted, including oxidation and high-temperature hot corrosion-creep fatigue tests. Pre-exposure experiments explained the damage process in DZ125. The applicability of the CDM-based life-prediction model of DZ125 was verified experimentally and by comparison with corresponding data from published studies. The model exhibited excellent life-prediction ability for gas-turbine hot-section components vulnerable to cyclic loads and hot corrosion combined.
引用
收藏
页码：1512 / 1526
页数：15
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