Structural Aspects of Zones of Plastic Strain. Part I. Effect of Adiabatic Shear

Simonov, M. Yu.; Naimark, Oleg; Simonov, Yu. N.; Georgiev, M.; Shaimanov, G. S.; Karpova, D. D.; Bilalov, Dmitry

doi:10.1007/s11041-020-00471-x

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“…[ 91,92 ] It has been proposed that the emergence of such structures of localized and/or adiabatic shear may promote efficient structure dispersion in local surface regions. [ 93,94 ] Due to such a structure, most materials acquire a high set of mechanical characteristics, including strength and crack resistance, and in some cases cold resistance, primarily due to an increased resistance to the propagation of the initial cracks, especially under impact loading. It was demonstrated that the ASB structure formation in the surface layer of sheet steel and subsequent annealing led to the formation of a nanodispersed and extremely homogeneous grain–subgrain structure with a higher level of strength and an exceptionally high resistance to crack growth, primarily under dynamic (impact) loading.…”

Section: Promising Trends In the Development Of New Technologies For The Surface Modification Of Parts Operating Under Extreme Conditionsmentioning

confidence: 99%

Advanced Materials for Mechanical Engineering: Ultrafine‐Grained Alloys with Multilayer Coatings

et al. 2021

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Research has demonstrated that the formation of a bulk ultrafine‐grained (UFG) structure in metals and alloys through severe plastic deformation (SPD) enables increasing of their strength properties and decreasing of the temperature range of superplasticity. Designers and process engineers generally show a great interest in such materials because the development of mechanical engineering industries places ever‐increasing demands on the performance properties of commercial alloys, especially for parts operating under extreme conditions. One of the approaches for a comprehensive enhancement of the performance characteristics of structural materials is a combination of a UFG structure in the bulk of a material, providing an increase in strength, and an additional surface modification providing resistance to erosion and corrosion damage. As a result, a set of material service properties can be enhanced, which is difficult to achieve through only metal nanostructuring or only surface modification. This approach has been demonstrated through an example of UFG titanium alloys produced by SPD, including those with nanostructured multilayer TiVN coatings of different “architectures.” Accordingly, herein, the trends, problems, and prospects of surface modification for the innovative application of structural UFG titanium alloys in advanced mechanical engineering are examined.

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Section: Promising Trends In the Development Of New Technologies For The Surface Modification Of Parts Operating Under Extreme Conditionsmentioning

confidence: 99%

Advanced Materials for Mechanical Engineering: Ultrafine‐Grained Alloys with Multilayer Coatings

et al. 2021

View full text Add to dashboard Cite

show abstract

Structural Aspects of Zones of Plastic Strain. Part I. Effect of Adiabatic Shear

Cited by 1 publication

References 13 publications

Advanced Materials for Mechanical Engineering: Ultrafine‐Grained Alloys with Multilayer Coatings

Advanced Materials for Mechanical Engineering: Ultrafine‐Grained Alloys with Multilayer Coatings

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