Plastic Deformation of Metal Surfaces

Niels Hansen, Xiaodan Zhang, Xiaoxu Huang

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearchpeer-review

    Abstract

    Plastic deformation of metal surfaces by sliding and abrasion between moving parts can be detrimental. However, when the plastic deformation is controlled for example by applying different peening techniques hard surfaces can be produced which can increase the fracture resistance and fatigue life of metal components. An optimization of processes and material parameters must be based on a quantification of stress and strain gradients at the surface and in near surface layer where the structural scale can reach few tens of nanometers. For such fine structures it is suggested to quantify
    structural parameters by TEM and EBSD and apply strength-structural relationships established for the bulk metal deformed to high strains. This technique has been applied to steel deformed by high energy shot peening and a calculated stress gradient at or near the surface has been successfully validated by hardness measurements as a function of distance from the surface.
    Original languageEnglish
    Title of host publicationAbstract book
    PublisherMinerals, Metals & Materials Society, TMS
    Publication date2013
    Publication statusPublished - 2013
    EventAdvanced Materials and Reservoir Engineering for Extreme Oil & Gas Environments: Nanocrystalline Metals I: 2013 TMS Annual Meeting & Exhibition - San Antonio, TX, United States
    Duration: 3 Mar 20137 Mar 2013

    Conference

    ConferenceAdvanced Materials and Reservoir Engineering for Extreme Oil & Gas Environments: Nanocrystalline Metals I
    Country/TerritoryUnited States
    CitySan Antonio, TX
    Period03/03/201307/03/2013

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