Prediction of temperature and prestraining effects on fracture toughness of high-strength structural steel by the local approach

Xiao, Guangchun; Jing, Hongyang; Xu, Lianyong; Zhao, Lei; Jin-chuan, JI

doi:10.1016/j.msea.2010.12.075

Cited by 3 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the real stress-strain curve behavior of the material at different temperatures had good transmissibility from a smooth tensile rod to a fracture mechanics specimen, and temperature had no obvious effect on the hardening behavior of the material. Xiao et al [28] studied the effect of pre-strain on low temperature fracture toughness of pipeline steel and conducted a tensile experiment and fracture toughness test on X80 pipeline steel raw material and plastic deformation material at different temperatures. The experiment results showed that the yield strength and tensile strength of pipeline steel could be improved by tensile pre-strain, but reduced by compressive pre-strain [10].…”

Section: Introductionmentioning

confidence: 99%

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Wang

Hao²,

Xie³

et al. 2022

Metals

View full text Add to dashboard Cite

The X90 pipeline steel with high-strength and high-toughness become the most popular pipeline steel. Due to the stress triaxial constraint and fracture toughness properties are the key factors for the stable work of pipeline steel, the research on the fracture toughness of X90 is a great significance to promote the engineering application of high-strength pipeline steel. In order to investigate the stress triaxial constraint and fracture toughness properties of X90 pipeline steel, the experimental rules with different grooves size are proposed using the common toughness experiment and the corresponding numerical models are established in this paper. The resistance curves and fracture toughness of each type of specimens are obtained and compared with that of finite element analysis. Furthermore, the stress distribution, J-integral distribution and stress triaxial constraint of the specimen are analyzed, as well as the influence of side grooves size on the determination of fracture toughness is also discussed. The results obtained from the study will provide a reference to the fracture toughness evaluation research and application of X90 pipeline steel.

show abstract

Section: Introductionmentioning

confidence: 99%

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Wang

Hao²,

Xie³

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…The results suggested that prestrain history could elevate the crack tip stress and decrease the prestrain‐induced constraint. Fracture toughness based on two‐parameter Weibull stress fracture criterion was investigated to disclose the effects of temperature and prestrain by a series of finite element analysis and experiments by Xiao et al …”

Section: Introductionmentioning

confidence: 99%

“…The results suggested that prestrain history could elevate the crack tip stress and decrease the prestrain-induced constraint. Fracture toughness based on two-parameter Weibull stress fracture criterion was investigated to disclose the effects of temperature and prestrain by a series of finite element analysis and experiments by Xiao et al 14 Mechanical heterogeneity is crucial for predicting facture resistance under different loading modes and specimen geometries. Generally, there are two methods to assess the crack growth considering material mismatch and specimen geometry.…”

mentioning

confidence: 99%

Numerical simulation of prestrain history effect on ductile crack growth in mismatched welded joints

Song

Liu

Berto

et al. 2017

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Pipe reeling may lead to plastic pre‐deformation (prestrain) around existing cracks in components; therefore, investigating whether this process accelerates or counteracts ductile crack growth, especially for strength mismatched welded joints, is warranted. This study focused on the effect of prestrain history on ductile crack growth in mismatched welded joints. A single‐edge‐notched tension specimen was selected for numerical study, and the crack was assumed to have existed before a prestrain history was applied. Crack growth resistance curves for plane strain and mode I crack growth under large‐scale yielding conditions have been computed using the complete Gurson model. Meanwhile, symmetrical and non‐symmetrical prestrain cycle modes with different loading levels were applied to the overmatched specimens. The outcome demonstrated that the mismatch ratio (the ratio between the yield stress of the weld metal and base metal) showed a significant effect on fracture resistance regardless of the stage at which the prestrain cycle loading was located. By contrast, the processing of the crack growth was weakened by the increase of prestrain values, and the symmetrical prestrain cycle resulted in greater plastic damage than the non‐symmetrical prestrain cycle did. However, the initial crack length had a non‐significant effect on the ductile fracture considering the prestrain and mismatch effects.

show abstract

Fracture Toughness and Fracture Mechanism of EH47 High-Strength Steel Subjected to Different Temperatures

Xue

Yang

Liu

et al. 2022

Metall Mater Trans A

View full text Add to dashboard Cite

Prediction of temperature and prestraining effects on fracture toughness of high-strength structural steel by the local approach

Cited by 3 publications

References 15 publications

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Numerical simulation of prestrain history effect on ductile crack growth in mismatched welded joints

Fracture Toughness and Fracture Mechanism of EH47 High-Strength Steel Subjected to Different Temperatures

Contact Info

Product

Resources

About