Research output: Contribution to journal › Article › peer-review
Grain Size Effects on Static and Dynamic Strength of Ultrafine-Grained Al-Mg-Mn Alloy Produced by High-Pressure Torsion. / Bobruk, E. V.; Brodova, I. G.; Razorenov, S. V.
In: Journal of Materials Engineering and Performance, Vol. 29, No. 1, 01.01.2020, p. 464-469.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Grain Size Effects on Static and Dynamic Strength of Ultrafine-Grained Al-Mg-Mn Alloy Produced by High-Pressure Torsion
AU - Bobruk, E. V.
AU - Brodova, I. G.
AU - Razorenov, S. V.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - In the paper, the structure and static and dynamic mechanical properties of ultrafine-grained A5083 alloy (Al-Mg-Mn) produced by high-pressure torsion (HPT) are reported. The static yield stress and tensile strength were determined in tensile tests at a strain rate of ~ 10−3 s−1, and the dynamic yield stress and spall strength were calculated from free-surface velocity histories obtained during shock-wave loading at a strain rate of 105 s−1. The HPT technique provides strong grain refinement. The average grain size of the alloy after HPT is 100-180 nm and depends on the accumulated true strain. HPT significantly improves the static strength properties of the alloy. The static yield stress is increased by 360-390% and the static ultimate tensile strength by 166-182%. It is shown that the dynamic yield stress improved by 168-181%, while the dynamic spall strength was not improved by HPT. Moreover, the nanostructured alloy with a grain size of ~ 100 nm demonstrates the lowest spall strength.
AB - In the paper, the structure and static and dynamic mechanical properties of ultrafine-grained A5083 alloy (Al-Mg-Mn) produced by high-pressure torsion (HPT) are reported. The static yield stress and tensile strength were determined in tensile tests at a strain rate of ~ 10−3 s−1, and the dynamic yield stress and spall strength were calculated from free-surface velocity histories obtained during shock-wave loading at a strain rate of 105 s−1. The HPT technique provides strong grain refinement. The average grain size of the alloy after HPT is 100-180 nm and depends on the accumulated true strain. HPT significantly improves the static strength properties of the alloy. The static yield stress is increased by 360-390% and the static ultimate tensile strength by 166-182%. It is shown that the dynamic yield stress improved by 168-181%, while the dynamic spall strength was not improved by HPT. Moreover, the nanostructured alloy with a grain size of ~ 100 nm demonstrates the lowest spall strength.
KW - aluminum alloy
KW - dynamic strength
KW - mechanical properties
KW - static strength
KW - ultrafine-grained structure
UR - http://www.scopus.com/inward/record.url?scp=85077541183&partnerID=8YFLogxK
U2 - 10.1007/s11665-019-04511-3
DO - 10.1007/s11665-019-04511-3
M3 - Article
AN - SCOPUS:85077541183
VL - 29
SP - 464
EP - 469
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
SN - 1059-9495
IS - 1
ER -
ID: 53948897