Effect of a second phase particle on the rate of growth of fatigue cracks

Jagannadham, K.; Ramachandran, E. G.

doi:10.1007/bf00034640

Cited by 2 publications

(1 citation statement)

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“…It has also been found that the needle-shaped second phase particles are more effective in inhibiting grain growth, and the orientation of these needle-shaped second phase particles has little effect on pinning. Jagannadham et al studied the influence of the second phase particles on the expansion rate of fatigue cracks [10]. The results show that increasing the shear modulus of the second phase particles and reducing the distance between the particles can effectively reduce the propagation rate of fatigue cracks.…”

Section: Introductionmentioning

confidence: 99%

Effect of vibration on the formation of second phase particles in cast-rolling strips

Zhu

Xing

Sun

et al. 2019

Metall. Res. Technol.

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Taking 20CrMn steel as the experimental object, the vibration and non-vibration cast-rolling comparison experiments were carried out on the self-developed twin-roll strip vibration cast-rolling mill. And a series of tests such as tensile test, fracture morphology observation and energy spectrum analysis were carried out on the obtained cast-rolling strips. This paper focuses on the analysis of the test results from the perspective of the second phase particles, in order to explore the effect of vibration on the precipitation of the second phase particles in cast-rolling. The analysis results show that the vibration can promote the uniform distribution of alloying elements, thereby inhibiting the formation of large size second phase particles which are mainly concentrated in the central region of the strip in the late solidification stage, and promoting the precipitation of the dispersed small-sized particles in the high-temperature plastic deformation stage, and finally improving the mechanical properties of the cast-rolling strip. At the end of the paper, the influence of vibration parameters such as vibration amplitude and vibration frequency on the formation of second phase particles is further analyzed.

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Section: Introductionmentioning

confidence: 99%