Estimation of the damaging energy under creep-fatigue interaction conditions in 1Cr-Mo-V steel

Journal Article · Fri Feb 05 04:00:00 EST 1999 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00471-0· OSTI ID:338413

Jeong, C Y; Nam, S W ^[1]

---

1. Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Materials Science and Engineering

1Cr-Mo-V steel is widely used in power-generating plants for components which operate at high temperatures. Since many components used in power plants are subjected to complex loading cycles at high temperatures, high temperature low-cycle fatigue (LCF) experiments with hold time can be very meaningful tests for understanding the creep-fatigue interaction phenomenon under complex loading conditions. Therefore, in the study of creep-fatigue interaction, a damage formation mechanism is important in understanding a prediction for fatigue lives. In this study an estimation of the damaging energy is tried by using the power law relation between the fatigue life and the hysteresis loop energy, and the quantitative values of it are compared with the fractured area per cycle, with a scanning electron microscope (SEM) analysis.

• OSTI ID: 338413
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 5 Vol. 42; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CREEP
DAMAGE
ENERGY
FATIGUE
HYSTERESIS
STEEL-CRMOV
STRAIN RATE
STRAINS
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K