Structures and Strength of Gradient Nanostructures

Niels Hansen (Invited author), Xiaodan Zhang (Invited author), Xiaoxu Huang (Invited author)

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    A recent study [1] has shown that a microstructure can be refined to a record low of 5 nm and that dislocation glide is still a controlling mechanism at this length scale. The nanostructure was produced in Cu by applying a very high strain in friction. The stress and strain decrease with increasing distance from the surface forming a gradient structure. In this study [2], by shot peening of a low carbon steel a gradient structure has been produced extending to about 1 mm below the surface. A number of strengthening mechanisms have been analyzed as a basis for a calculation of the stress and strain as a function of the distance from the surface. The results are evaluated by a finite element investigation of shot peening.
    Original languageEnglish
    Publication date2016
    Number of pages1
    Publication statusPublished - 2016
    EventTMS 2016: 145th Annual Meeting and Exhibition - Nashville, United States
    Duration: 14 Feb 201618 Feb 2016
    Conference number: 145


    ConferenceTMS 2016: 145th Annual Meeting and Exhibition
    Country/TerritoryUnited States
    Internet address

    Bibliographical note

    Part of: Proceedings - 2016 TMS Annual Meeting & Exhibition, 2016.
    Presented at: Ultrafine Grained Materials IX; 2016 TMS Annual Meeting & Exhibition, Nashville.


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