Experimental and simulated investigations of low cycle fatigue behavior in a nickel-based superalloy with different volume fractions of δ phase

被引：18

作者：

Yuan, Guang-Jian ^{[1
]}

Wang, Run-Zi ^{[1
]}

Zhu, Wen-Bo ^{[1
]}

Li, Dong-Feng ^{[2
]}

Zhang, Yong ^{[1
]}

Zhang, Xian-Cheng ^{[1
]}

Tu, Shan-Tung ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

[2] Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 153卷

基金：

中国博士后科学基金; 中国国家自然科学基金; 日本学术振兴会;

关键词：

Nickel-based superalloy; Delta phase; Crystal plasticity; Life prediction; Damage mechanism; CRYSTAL PLASTICITY; INCONEL; 718; LIFE PREDICTION; MECHANICAL-PROPERTIES; MARTENSITIC STEEL; CRACK NUCLEATION; DAMAGE EVOLUTION; HEAT-TREATMENT; LENGTH-SCALE; DEFORMATION;

D O I：

10.1016/j.ijfatigue.2021.106411

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The fatigue crack initiation life and damage mechanisms of three heat-treated nickel-based alloy with different volume fractions of delta phase have been investigated based on experiment and crystal plasticity simulation. With the help of fatigue indicator parameters (FIPs), the predicted fatigue lives are agreed well with experimental results, where energy dissipation based FIP shows more accurate life prediction than plastic slip based FIP does. Maximum fatigue damage sites shift from grain boundary to delta phase boundary by increasing delta phase and applied strain level. Furthermore, the existence of delta phase leads to the increase of plastic slip accumulation and decrease of localized stress level.

引用

页数：14

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