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The influence of age hardening and shot peening on the surface properties of 7075 aluminium alloy
ID Žagar, Sebastjan (Author), ID Markoli, Boštjan (Author), ID Naglič, Iztok (Author), ID Šturm, Roman (Author)

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Abstract
The present study investigates the effect of shot peening (SP) on the mechanical properties and surface roughness of 7075 aluminum alloy during different stages and conditions of heat treatment. The mechanical properties were determined by measuring Vickers microhardness profiles and residual stress profiles, while the amount of alloying elements present in the solid solution of the samples under different heat treatment conditions was determined by measuring the electrical conductivity. The results show that the increase in microhardness near the SP surface and the maximum compressive residual stresses are mainly related to the content of alloying elements in the solid solution. Surface roughness increases with increasing SP Almen intensity, and samples with the highest microhardness and residual stresses have the lowest surface roughness.

Language:English
Keywords:aluminum alloy 7075, shot peening, microhardness, residual stresses, surface roughness
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
NTF - Faculty of Natural Sciences and Engineering
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:11 str.
Numbering:Vol. 14, iss. 9, art. 2220
PID:20.500.12556/RUL-126855 This link opens in a new window
UDC:620.1:669.715(045)
ISSN on article:1996-1944
DOI:10.3390/ma14092220 This link opens in a new window
COBISS.SI-ID:62013443 This link opens in a new window
Publication date in RUL:06.05.2021
Views:1390
Downloads:161
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Record is a part of a journal

Title:Materials
Shortened title:Materials
Publisher:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.05.2021

Secondary language

Language:Slovenian
Keywords:aluminijeva zlitina 7075, udarno utrjevanje, mikrotrdota, zaostale napetosti, površinska hrapavost

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0270
Name:Proizvodni sistemi, laserske tehnologije in spajanje materialov

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