Surface integrity of heat treatable magnesium alloy AZ80A after cavitation peening
ID Žagar, Sebastjan (Author), ID Soyama, Hitoshi (Author), ID Grum, Janez (Author), ID Šturm, Roman (Author)

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The present paper aims to investigate topographical behavior of precipitation hardened magnesium alloy AZ80A subjected to cavitation peening. The introduction of surface residual compressive stress is the main feature of this new method, which is different from the traditional mechanical processing method and is also the key factor leading to the good service performance of the metal material surface. The tested material was heat treatable magnesium alloy AZ80A. Magnesium alloys have the lowest density among the common non-ferrous alloys and so are very important in reducing the weight and are used in many fields, including aviation, aerospace, electronics and automobile industries. After heat treatment of the magnesium alloy, cavitation peening was performed, which in all cases raises the surface hardness of the specimens. Cavitation peening also has a beneficial effect on compressive residual stresses, as they increase in all cases. It should be noted that in all specimens throughout the entire measurement depth the residual stresses stayed in compressive nature. They are especially expressed in the case of artificial aging, where we also achieve the maximum stress on the specimen surface in the amount of −220 MPa. The most negative thing about such a process is the surface roughness after cavitation hardening as it is greatly increased in all cases.

Keywords:magnesium alloy AZ80A, cavitation peening, artificial ageing, residual stresses, microhardness, surface roughness, microstructure
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Number of pages:Str. 2098-2107
Numbering:Vol. 17
PID:20.500.12556/RUL-135015 This link opens in a new window
ISSN on article:2238-7854
DOI:10.1016/j.jmrt.2022.01.156 This link opens in a new window
COBISS.SI-ID:97813507 This link opens in a new window
Publication date in RUL:17.02.2022
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Record is a part of a journal

Title:Journal of materials research and technology
Shortened title:J. mater. res. technol.
COBISS.SI-ID:519699737 This link opens in a new window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Keywords:magnezijeva zlitina AZ80, kavitacijsko utrjevanje, umetno staranje, zaostale napetosti, mikrotrdota, površinska hrapavost, mikrostruktura


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

Funder:Other - Other funder or multiple funders
Funding programme:JSPS KAKENHI
Project number:18KK0103

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