Dynamic fracture behavior of 11MnNiMo steel under medium-low loading rate
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Yilei Li
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Xiao Yan
Abstract
In this work, the dynamic fracture behavior of 11MnNiMo steel under medium-low loading rate was studied. In the fracture morphology with and without prefab crack, the fracture surface had obvious morphological partition phenomenon. In comparison, there were more crack roots in the crack root region with preset cracks and gradually expanded to the interior. Transmission analysis showed that there were many displacements in the matrix and dispersed secondary phase particles, which should be MnS impurity phase. In the microstructure of 11MnNiMo matrix, the elongated morphology of lath martensite structure was retained. During the process of impact shear deformation, massive plastic deformation was associated with the material, so that a great deal of displacements led to the movement of the slip system. At the same time, the transmission analysis showed that there was elastic stress inside the impact fracture.
Funding source: CNNC science fund for talented young scholars
Award Identifier / Grant number: K301007019001
Acknowledgement
The authors are grateful to financial support from CNNC science fund for talented young scholars, with contract of K301007019001.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Surface states by grinding thin strips of electrochemically deposited nanocrystalline nickel-iron
- Design optimization of armored wheeled vehicle suspension lower control arm
- Influence of residual oxygen during laser beam welding under vacuum
- Determining the structural life of an electric vehicle battery from road loads
- Cavitation resistance of Stellite 21 coatings tungsten inert gas (TIG) deposited onto duplex stainless steel X2CrNiMoN22-5-3
- Dynamic fracture behavior of 11MnNiMo steel under medium-low loading rate
- High-velocity impact performance of Ramor 500 armor steel
- Thermal and mechanical analyses of an EN AW 6082 alloy with static and dynamic precipitations
- Improving the fatigue life of produced dental implants by the thread-rolling process
- Effect of thermomechanical processing on the mechanical properties of CuZn10 alloy
- Effects of filler material selection on the microstructural, mechanical and corrosion properties of TIG welded AISI/SAE 304L stainless steel sheets and rings
- A new hybrid artificial hummingbird-simulated annealing algorithm to solve constrained mechanical engineering problems
- A hybrid engineering algorithm of the seeker algorithm and particle swarm optimization
- Application of a modular topology optimization framework to an aerospace bracket design
