Fatigue life prediction of nickel-based GH4169 alloy on the basis of a multi-scale crack propagation approach

被引：40

作者：

Ye, Shen ^{[1
]}

Zhang, Cheng-Cheng ^{[2
]}

Zhang, Peng-Yue ^{[3
]}

Zhang, Xian-Cheng ^{[1
]}

Tu, Shan-Tung ^{[1
]}

Wang, Run-Zi ^{[1
]}

机构：

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

[2] AECC Commercial Aircraft Engine Co LTD, Shanghai Engn Res Ctr Commercial Aircraft Engine, Shanghai 201108, Peoples R China

[3] Collaborat Innovat Ctr Standardizat & Intellectua, Hangzhou 310018, Zhejiang, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2018年 / 199卷

关键词：

Multi-scale crack propagation; Fatigue life prediction; Microstructural dissimilitude; Nickel-based alloy; GRAIN-SIZE; UNIVERSAL FEATURES; GROWTH-BEHAVIOR; INCONEL; 718; MODEL; EQUATION; METALS; MICROSTRUCTURE; SUPERALLOY; TRANSITION;

D O I：

10.1016/j.engfracmech.2018.05.023

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper was concerned with an approach to predict fatigue life based on a multi-scale crack propagation model. The expressions of crack propagation rates in microstructurally small crack (MSC), physically small crack (PSC) and long crack (LC) stages were unified in the multi-scale crack propagation model. Its integral form presented a fatigue life prediction approach. The nickel-based GH4169 alloy was employed to validate the prediction capacity of present approach. The prediction results of lives of specimens with different initial defects sizes were compared with the experimental data.

引用

页码：29 / 40

页数：12

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