Plastic Deformation of Metal Surfaces

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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
CountryUnited States
CitySan Antonio, TX
Period03/03/201307/03/2013

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