Low cycle fatigue and creep-fatigue interaction behaviour of 2.25Cr1MoV steel at elevated temperature

被引：22

作者：

Tian, Yang ^{[1
]}

Yu, Dunji ^{[1
]}

Zhao, Zizhen ^{[1
]}

Chen, Gang ^{[1
]}

Chen, Xu ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

MATERIALS AT HIGH TEMPERATURES | 2016年 / 33卷 / 01期

基金：

中国国家自然科学基金;

关键词：

2.25Cr1MoV steel; Fatigue; Plastic strain energy; Creep-fatigue interaction; Fatigue life prediction; CR-1 MO STEEL; AUSTENITIC STAINLESS-STEEL; 9CR-1MO MARTENSITIC STEEL; OXIDATION INTERACTIONS; MECHANICAL-PROPERTIES; LIFE PREDICTION; HOLDING PERIOD; ENERGY; DAMAGE; DEFORMATION;

D O I：

10.1080/09603409.2015.1108504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study reports the fatigue behaviour of 2.25Cr1MoV steel under low cycle fatigue (LCF) loading and creep-fatigue interaction (CFI) loading at 355, 455 and 555 degrees C. Various hold durations up to 600 s were introduced in the CFI tests at the peak/valley strain under strain or stress control. In LCF tests, the steel exhibited remarkable strengthening at 455 degrees C, which can be ascribed to the effect of dynamic strain aging. In CFI tests, tensile holds were found more damaging than compressive holds but considerably less harmful than the combined tensile-compressive holds. A modified plastic strain energy approach based on the damage mechanisms was proposed to predict fatigue life under LCF and CFI conditions. The predictions obtained compared very favourably with the experimental results.

引用

页码：75 / 84

页数：10

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