Life assessment of a 42CrMo4 steel under low-cycle fatigue and thermomechanical fatigue loading conditions

被引：23

作者：

Bartosak, Michal ^{[1
]}

Horvath, Jakub ^{[2
]}

Spaniel, Miroslav ^{[1
]}

机构：

[1] Czech Tech Univ, Fac Mech Engn, Ctr Adv Aerosp Technol, Dept Mech Biomechan & Mechatron, Tech St 4, Prague 16607 6, Czech Republic

[2] Czech Tech Univ, Ctr Adv Aerosp Technol, Fac Mech Engn, Dept Mat Engn, Charles Sq 13, Prague 12135 2, Czech Republic

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 129卷

关键词：

Low cycle fatigue; Thermomechanical fatigue/cycling; Life prediction; Martensite; CAST-IRON; PREDICTION; SUPERALLOY; BEHAVIOR; TEMPERATURE; OXIDATION; CREEP; LCF;

D O I：

10.1016/j.ijfatigue.2019.105255

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, a 42CrMo4 steel is subjected to Low-Cycle Fatigue (LCF) loading and Thermo-Mechanical Fatigue (TMF) loading in the temperature range between 300 degrees C and 600 degrees C. The experimental results show that the cyclic softening of the material is more significant with increasing temperature, and that both in-phase and out-of-phase TMF lead to a shorter lifetime than for LCF. Finally, a modification of the fatigue criterion from the literature is proposed in order to take into account the main damage mechanisms involved in LCF and TMF. A good correlation was achieved between the predicted results and the experimental results.

引用

页数：11

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