Crack-tip plastic constraint activators and the application to plane-strain fracture toughness test:

El-Shennawy, M.; Minami, Fumiyoshi; Toyoda, Masao; Kajimoto, Katsuya

doi:10.1016/s0013-7944(99)00024-7

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…The characteristic of the metal gradient structure shaft is that gradient distribution of chemical composition provides conditions for the gradient distribution of material structure, strength, plasticity, toughness and mechanics properties [1][2][3][4]. And this could ensure that the surface of structural material has a higher strength, hardness, wear resistance and the core can effectively transmit torque with a high toughness.…”

Section: Introductionmentioning

confidence: 99%

Interface Bonding Properties of 25Cr5MoA/Q235 Bimetallic Compound Shaft

Xiang

Gao

et al. 2011

AMR

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Taking into account of the key technologies of manufacturing of metal gradient structure shaft with high strength and toughness, interface microstructure, element diffusion, interface micro hardness and resistance to crack propagation ability of the pre-compounding shaft of 25Cr5MoA/Q235 steel manufactured by the method solid-liquid were studied in this paper. The results show that using extrusion forming methods, dense microstructure formed near the interface, and after the quenching and tempering treatment, the interface microstructure appears continuous distribution. Interface shear test results indicate that the shear strength is 412.69MPa. Cr element in the combination of the interface appears a continuous distribution; after quenching and tempering it shows a more uniform distribution, and micro hardness changed about 240HV across a region ranging from the bonding interface to both sides by the distance of 50μm. While the micro hardness of 25Cr5MoA/Q235 steel by the method solid-liquid changed about 160HV after the quenching and tempering treatment. The fracture toughness test of gradient structure shaft by solid-liquid compounding shows that because of the termination of crack propagation at the interface between the outer and inner layer, the safety of the graded structured axis in service would be improved.

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Section: Introductionmentioning

confidence: 99%

Interface Bonding Properties of 25Cr5MoA/Q235 Bimetallic Compound Shaft

Xiang

Gao

et al. 2011

AMR

View full text Add to dashboard Cite

show abstract

“…The statistical distribution of microcracks governs the cumulative probability of fracture, which can be modeled using a Griffith-type fracture criterion imposed on the critical microcrack size [8]. The Weibull stress framework has become a generally recognized approach to quantify the probabilistic driving force for cleavage fracture [9][10][11][12], to characterize material toughness properties in a probabilistic [13,14], and to develop and apply constraint corrections [15][16][17] which accommodate differences in crack-front conditions between small laboratory test specimens and RPVs.…”

Section: Introductionmentioning

confidence: 99%