TY - JOUR
T1 - Strengthening of A5052 aluminum alloy by high-pressure sliding process
AU - Aziz, Ahmad Muhammad
AU - Mohamed, Intan Fadhlina
AU - Horita, Zenji
AU - Omar, Mohd Zaidi
AU - Sajuri, Zainuddin
AU - Othman, Norinsan Kamil
AU - Syarif, Junaidi
AU - Gebril, Mohamed Abdelgawad
AU - Ostovan, Farhad
AU - Lee, Seungwon
AU - Matsuda, Kenji
AU - Yumoto, Manabu
AU - Takizawa, Yoichi
AU - Al-Ameri, Ammar Abdulkareem Hashim
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
PY - 2024
Y1 - 2024
N2 - A commercial purity of an Al-2mass% Mg alloy (A5052) was processed by severe plastic deformation using high-pressure sliding (HPS) for grain refinement. Mechanical properties and microstructures were examined after the HPS processing and subsequent annealing. Dislocation density decreased and grain growth occurred by the annealing. However, annealing at 150 °C led to an increase in the yield stress σy to 420 MPa as well as the strain hardening coefficient (n = 0.49) defined in Ludwik’s equation in comparison with σy=375MPa and n = 0.25 in the as-HPS-processed state. It was shown that a Hall–Petch relation holds with a coefficient, k = 0.16 MPa m−1/2. The ratio of Vickers harness to tensile stress (Hv/σTS) was ~ 3, while the ratio to the yield stress (Hv/σy) was 3.3–4.8. Furthermore, plotting of several SPD methods including this study for tensile strength against equivalent strain resulted in a linear relationship and indicated that the HPS process yielded the highest strengthening. The strengthening mechanism was evaluated for the HPS-processed A5052 alloy so that the dominant contribution to the strengthening was from the grain boundary hardening due to significant grain refinement, which was up to 70% of the total strength. Graphical abstract: (Figure presented.).
AB - A commercial purity of an Al-2mass% Mg alloy (A5052) was processed by severe plastic deformation using high-pressure sliding (HPS) for grain refinement. Mechanical properties and microstructures were examined after the HPS processing and subsequent annealing. Dislocation density decreased and grain growth occurred by the annealing. However, annealing at 150 °C led to an increase in the yield stress σy to 420 MPa as well as the strain hardening coefficient (n = 0.49) defined in Ludwik’s equation in comparison with σy=375MPa and n = 0.25 in the as-HPS-processed state. It was shown that a Hall–Petch relation holds with a coefficient, k = 0.16 MPa m−1/2. The ratio of Vickers harness to tensile stress (Hv/σTS) was ~ 3, while the ratio to the yield stress (Hv/σy) was 3.3–4.8. Furthermore, plotting of several SPD methods including this study for tensile strength against equivalent strain resulted in a linear relationship and indicated that the HPS process yielded the highest strengthening. The strengthening mechanism was evaluated for the HPS-processed A5052 alloy so that the dominant contribution to the strengthening was from the grain boundary hardening due to significant grain refinement, which was up to 70% of the total strength. Graphical abstract: (Figure presented.).
UR - http://www.scopus.com/inward/record.url?scp=85184877865&partnerID=8YFLogxK
U2 - 10.1007/s10853-024-09334-9
DO - 10.1007/s10853-024-09334-9
M3 - 学術論文
AN - SCOPUS:85184877865
SN - 0022-2461
JO - Journal of Materials Science
JF - Journal of Materials Science
ER -