Strengthening mechanism in Al–Cu–Li alloy processed by friction consolidation followed by high-pressure torsion
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in: Journal of Alloys and Compounds, Jahrgang 1050, 185374, 15.01.2026.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Strengthening mechanism in Al–Cu–Li alloy processed by friction consolidation followed by high-pressure torsion
AU - Mathew, Elizabeth
AU - Markmann, Jürgen
AU - Chan, Chang Yin Cheng
AU - Ivanisenko, Yulia
AU - Ovri, Henry
AU - Suhuddin, Uceu Fuad Hasan
AU - Staron, Peter
AU - Klusemann, Benjamin
N1 - Publisher Copyright: © 2025 The Authors
PY - 2026/1/15
Y1 - 2026/1/15
N2 - The primary objective of this study is to explore the precipitation behavior of Al–Cu–Li alloy powder processed through a two-step approach: friction consolidation (FC) followed by high-pressure torsion (HPT). Microstructure analysis by scanning electron microscope shows a refined microstructure after FC, with a further reduction in grain size following HPT. X-ray diffraction analysis confirmed the formation of T1, T2, and δ precipitates after FC, which persisted even after HPT. Small-angle X-ray scattering shows a reduction in the volume fraction of larger precipitate particles after HPT, while the smaller grain volume fraction increased. Additionally, the volume fraction of precipitates decreased as a function of strain. To understand the contributions of various mechanisms to an enhanced hardness observed after HPT, a physical model was employed. This study explores how HPT influences dislocation behavior, precipitation, and grain size, highlighting its role in tailoring the microstructure and properties of the friction consolidated Al–Cu–Li alloy.
AB - The primary objective of this study is to explore the precipitation behavior of Al–Cu–Li alloy powder processed through a two-step approach: friction consolidation (FC) followed by high-pressure torsion (HPT). Microstructure analysis by scanning electron microscope shows a refined microstructure after FC, with a further reduction in grain size following HPT. X-ray diffraction analysis confirmed the formation of T1, T2, and δ precipitates after FC, which persisted even after HPT. Small-angle X-ray scattering shows a reduction in the volume fraction of larger precipitate particles after HPT, while the smaller grain volume fraction increased. Additionally, the volume fraction of precipitates decreased as a function of strain. To understand the contributions of various mechanisms to an enhanced hardness observed after HPT, a physical model was employed. This study explores how HPT influences dislocation behavior, precipitation, and grain size, highlighting its role in tailoring the microstructure and properties of the friction consolidated Al–Cu–Li alloy.
KW - Al–Cu–Li alloy
KW - FC
KW - HPT
KW - Precipitation
KW - SAXS
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=105024305663&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2025.185374
DO - 10.1016/j.jallcom.2025.185374
M3 - Journal articles
AN - SCOPUS:105024305663
VL - 1050
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
M1 - 185374
ER -