ǂThe ǂinfluence of age hardening and shot peening on the surface properties of 7075 aluminium alloy

Sebastjan Žagar (Author), Boštjan Markoli (Author), Iztok Naglič (Author), Roman Šturm (Author)

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.

Keywords

aluminijeva zlitina 7075;udarno utrjevanje;mikrotrdota;zaostale napetosti;površinska hrapavost;aluminum alloy 7075;shot peening;microhardness;residual stresses;surface roughness;

Data

Language:	English
Year of publishing:	2021
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	620.1:669.715(045)
COBISS:	62013443
ISSN:	1996-1944
Views:	385
Downloads:	119
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	aluminijeva zlitina 7075;udarno utrjevanje;mikrotrdota;zaostale napetosti;površinska hrapavost;
Type (COBISS):	Article
Pages:	str. 1-11
Volume:	ǂVol. ǂ14
Issue:	ǂiss. ǂ9
Chronology:	May 2021
DOI:	10.3390/ma14092220
ID:	12863800