The effect of phase angle on crack growth mechanisms under thermo-mechanical fatigue loading

被引：25

作者：

Jones, J. ^{[1
]}

Whittaker, M. ^{[1
]}

Lancaster, R. ^{[1
]}

Hyde, C. ^{[2
]}

Rouse, J. ^{[2
]}

Engel, B. ^{[2
]}

Pattison, S. ^{[3
]}

Stekovic, S. ^{[4
]}

Jackson, C. ^{[5
]}

Li, H. Y. ^{[5
]}

机构：

[1] Swansea Univ, Inst Struct Mat, Bay Campus, Swansea SA1 8EN, W Glam, Wales

[2] Univ Nottingham, Engn Fac, Dept Mech Mat & Mfg, Nottingham NG7 2RD, England

[3] Rolls Royce Plc, Elton Rd, Derby DE24 8BJ, England

[4] Linkoping Univ, Dept Management & Engn, Linkoping, Sweden

[5] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 135卷

基金：

欧盟地平线“2020”;

关键词：

Thermo-mechanical fatigue; Phase angle; Creep; Oxidation; DEFORMATION MECHANISMS; TEMPERATURE; PROPAGATION; SUPERALLOY; BEHAVIOR;

D O I：

10.1016/j.ijfatigue.2020.105539

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The current paper describes TMF crack growth behaviour in an advanced nickel-based superalloy. Changes in behaviour are examined which occur as a function of the phase angle between applied stress and temperature. The fractography of the failed specimens reveals changes from transgranular to intergranular growth between high and low phase angle tests as a result of the onset of high temperature damage mechanisms. More targeted testing has also been undertaken to isolate the contributions of these mechanisms, with specific transitions in behaviour becoming clear in 90 degrees diamond cycles, where dynamic crack growth and oxidation strongly interact.

引用

页数：12

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