Quantitative examination of failure of low-alloy steels

Bartz, I.; Bernshtein, A. M.; Dietrich, Kai

doi:10.1007/bf00728121

Cited by 1 publication

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“…Furthermore, thick grains promote crack growth, while grain crystallographic orientation changes inhibit the spread of cracks. 13 According to Bag et al, a uniform distribution of phases and grain sizes improves ductility and toughness in DP steels. They also assert that the martensitic banding structure generated during rolling processes favors crack propagation in the case of martensite with coarse grain sizes.…”

Section: Introductionmentioning

confidence: 99%

“…According to Bartz et al's research, martensite distorts the fracture trajectory and disrupts the homogeneity of the deformation process. Furthermore, thick grains promote crack growth, while grain crystallographic orientation changes inhibit the spread of cracks 13 . According to Bag et al, a uniform distribution of phases and grain sizes improves ductility and toughness in DP steels.…”

Section: Introductionmentioning

confidence: 99%

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Martensite content effect on fatigue crack growth and fracture energy in dual‐phase steels

Avendaño‐Rodríguez,

Rodriguez‐Baracaldo,

Weber

et al. 2023

Fatigue Fract Eng Mat Struct

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The effect of different microstructural factors on crack growth and fatigue fracture mechanisms in dual‐phase (DP) steels has yet to be fully understood. The present research examines the relationship between crack growth, microstructure, and fracture mechanisms. The samples were intercritically annealed at different temperatures to produce three different martensite volume fractions (MVFs). The results show that the mechanical incompatibility of ferrite and martensite promotes continuous crack tip deflection. MVF increases are associated with elevated fracture tortuosity, more significant fracture energy surface formation, and higher Paris law exponent m values. The interaction of the microstructure with the crack tip, the strain energy density, and the softening caused by secondary microcrack propagation are all illustrated by Electron backscatter diffraction (EBSD) maps. Increasing MVF promotes slow crack growth and a fracture energy increase of 22.9% between the as‐received and heat‐treated steels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%