Article
Materials Science, Multidisciplinary
Lenka Kuncicka, Radim Kocich, Michal Jambor
Summary: This study assesses the effects of room temperature rotary swaging on the structure and dynamic recrystallization processes of newly designed Al/Cu composite conductors. The results indicate that swaging can induce structure recovery and dynamic recrystallization, and the resistivity and microhardness of the conductors are affected. Dynamic restoration and the lowest resistivity are observed in the 15 mm conductor.
MATERIALS CHARACTERIZATION
(2022)
Review
Chemistry, Multidisciplinary
Qingzhong Mao, Xiang Chen, Jiansheng Li, Yonghao Zhao
Summary: This review paper summarizes the research progress of gradient and nano-gradient materials prepared by rotary swaging (RS), finding that metals processed by RS usually possess inverse nano-gradient structure, including nano-grains, texture-gradient, and dislocation density-gradient. Additionally, properties such as micro-hardness, conductivity, and corrosion resistance are also discussed. The future prospects and further research work for RS processed materials are also highlighted.
Article
Materials Science, Multidisciplinary
Lenka Kuncicka, Radim Kocich
Summary: The study focuses on the structure investigations of newly designed electro-conductive Al-Cu composites produced via room temperature rotary swaging. The results show that the swaging route affects the activated slip systems and the development of dynamic recrystallization. Swaging with altering directions results in high presence of recrystallized grains and smaller average grain size.
Review
Metallurgy & Metallurgical Engineering
Ahmad Bahmani, Mehrab Lotfpour, Milad Taghizadeh, Woo-Jin Kim
Summary: Magnesium (Mg) alloys have advantages and disadvantages. Severe plastic deformation (SPD) can improve the microstructure and enhance the strength and formability of Mg alloys. However, the effects of SPD on the corrosion of Mg alloys are controversial. Therefore, it is important to review the literature on the corrosion properties of Mg alloys prepared by SPD and understand the mechanisms controlling their corrosion behavior.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Lenka Kuncicka, Radim Kocich, Petr Kacor, Michal Jambor, Martin Marek
Summary: This study aims to investigate the correlations between electric characteristics and selected structural features of newly designed Al/Cu laminated conductors manufactured via room temperature rotary swaging. The results showed that the electric resistivity was affected by grain size, bimodal grains' distribution, presence of twins, dislocation density, and area fractions of Al and Cu. The fabrication of laminates via rotary swaging introduced more advantageous combinations of electric and mechanical properties than conventional manufacturing techniques.
Article
Materials Science, Multidisciplinary
Alice Chlupova, Ivo Sulak, Lenka Kuncicka, Radim Kocich, Jiri Svoboda
Summary: The authors investigated the microstructural aspects of recrystallization of a new ODS alloy consolidated by hot rotary swaging. The study involved microstructural characterization using SEM, TEM, and EBSD, as well as mechanical properties testing. Different rotary swaging and annealing conditions resulted in different structures, influencing properties such as hardness and Young's modulus. Detailed microscopic analysis helped clarify and discuss the properties of the newly developed ODS alloy.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Wen Feng, Zheng Wang, Qiang Sun, Yiqiang He, Yuanxing Sun
Summary: In this study, thermomechanical processing was used to optimize the grain boundary character distribution (GBCD) of 304 austenitic stainless steel. The effect of GBCD evolution on intergranular corrosion (IGC) was investigated, and the results showed that the increase in low-1 coincident site lattice (CSL) boundaries improved the corrosion resistance of the steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Marta Orlowska, Ewa Ura-Binczyk, Lech Olejnik, Malgorzata Lewandowska
Summary: The study demonstrates that the corrosion resistance of the Al-Mg-Si alloy is primarily influenced by the intermetallic particles rather than grain boundaries. Grain refinement plays a role in mitigating corrosion attack.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2021)
Article
Materials Science, Multidisciplinary
Hao Chen, Conglin Hu, Faping Hu, Xuefei Liu, Fanxiao Kong, Weidong Xie, Guobing Wei, Yan Yang, Xiaodong Peng, Yuanding Huang, Norbert Hort
Summary: A combination of conventional extrusion (CE) and rotary swaging (RS) was used to produce high-strength Mg alloys. Compared to the as-extruded alloys, the as-swaged alloys showed significantly increased strength. This increase in strength was attributed to fine grains, higher density of nanoscale spheroidal Al-Mn precipitates, and dislocations caused by RS.
MATERIALS CHARACTERIZATION
(2023)
Article
Mechanics
Svetlana Ortmann-Ishkina, Dhia Charni, Marius Herrmann, Yang Liu, Jeremy Epp, Christian Schenck, Bernd Kuhfuss
Summary: Rotary swaging can impact material properties by work hardening and residual stresses generation, which can be intentionally used to improve part performance. Adjusting the closing time and geometric features of the dies significantly affects residual stresses distribution, allowing for optimization of the process to shape residual stresses profiles and enhance part performance. Experimental investigations using X-ray diffraction show good agreement between simulation results and physical measurements.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Lixi Tian, Cuiqi Yuan, Fang Wang, Chao Shi, Bangyan Zhang
Summary: Cold rolling and subsequent annealing can enhance the pitting resistance of 316LN austenitic stainless steel by forming ultra-fine grained structures. Partially recrystallized samples after short-time annealing show extraordinary corrosion resistance compared to cold rolled or fully recrystallized samples.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Lenka Kuncicka, Radim Kocich, Petr Kacor, Michal Jambor, Miroslav Jopek
Summary: The nature of alternating current transfer via metallic materials is specific, and the skin effect tends to occur. However, the influence of this effect can be optimized via the design and fabrication procedures. The study presents the design of an Al-Cu clad conductor that has a favourable effect on decreasing power losses during alternating current transfer and the development of substructure affects the electric resistance of the conductor. The manufacturing of the clad composite via rotary swaging also introduces increased microhardness.
Article
Materials Science, Multidisciplinary
Yasin Alemdag, Sadun Karabiyik, Gencaga Purcek
Summary: In this study, the microstructure and mechanical properties of a severely deformed Al-12Si-3Cu-0.5Mn alloy were investigated. Multi-direction forging (MDF) resulted in the fragmentation of hard particles, formation of dispersoids, and the formation of fine grains with high angle grain boundaries. The alloy exhibited improved hardness, yield and tensile strength, elongation, and impact toughness after MDF. The highest values were achieved after two-cycle MDF for hardness, yield and tensile strength, while four-cycle MDF produced the highest elongation and impact toughness values. The microstructural alterations, including the fragmentation of hard particles, formation of dispersoids and fine grains, annihilation of dislocations, and grain growth, explained these findings.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Xin Chen, Chuming Liu, Shunong Jiang, Zhiyong Chen, Yingchun Wan
Summary: A high-strength magnesium-lithium alloy was successfully fabricated via cold rotary swaging, resulting in the formation of nanograins with high-angle grain boundaries in the central region, leading to higher mechanical properties compared to the edge region. The nanocrystallization process in the central region involved massive twinning and subsequent refinement of twin/matrix lamellae through the formation of dislocation arrays, while the edge region exhibited lower twinning activity and difficulty in forming dislocation arrays.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xin Chen, Chuming Liu, Shunong Jiang, Yingchun Wan
Summary: Remarkable grain refinement of AZ31 Mg alloy was achieved by low-strain rotary swaging, with nanograins formed in the central region attributed to high strain rates and constantly changing loading directions. The nanocrystallization process in the central region was dominated by tension twinning and the formation of dislocation arrays, while only twins were formed in the edge region due to a single loading direction towards the center.
Article
Physics, Multidisciplinary
M. Janecek, F. Novy, P. Harcuba, J. Strasky, L. Trsko, M. Mhaede, L. Wagner
ACTA PHYSICA POLONICA A
(2015)
Article
Physics, Multidisciplinary
P. Minarik, M. Zemkova, R. Kral, M. Mhaede, L. Wagner, B. Hadzima
ACTA PHYSICA POLONICA A
(2015)
Article
Materials Science, Multidisciplinary
Mozghan Gholami, Mansour Mhaede, Filip Pastorek, Igor Altenberger, Branislav Hadzima, Manfred Wollmann, Lothar Wagner
ADVANCED ENGINEERING MATERIALS
(2016)
Article
Materials Science, Multidisciplinary
Igor Altenberger, Hans-Achim Kuhn, Hilmar R. Mueller, Mansour Mhaede, Mozghan Gholami-Kermanshahi, Lothar Wagner
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
A. Ahmed, M. Mhaede, M. Wollmann, L. Wagner
MATERIALS & DESIGN
(2015)
Article
Materials Science, Biomaterials
Mansour Mhaede, Aymen Ahmed, Manfred Wollmann, Lothar Wagner
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2015)
Article
Materials Science, Coatings & Films
Aymen A. Ahmed, Mansour Mhaede, M. Basha, Manfred Wollmann, Lothar Wagner
SURFACE & COATINGS TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Igor Altenberger, Hans-Achim Kuhn, Mozhgan Gholami, Mansour Mhaede, Lothar Wagner
Article
Chemistry, Physical
Aymen A. Ahmed, Mansour Mhaede, Manfred Wollmann, Lothar Wagner
APPLIED SURFACE SCIENCE
(2016)
Article
Metallurgy & Metallurgical Engineering
S. El-Hadad, M. Mhaede, K. M. Ibrahiem
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
(2016)
Article
Materials Science, Coatings & Films
A. Zammit, S. Abela, L. Wagner, M. Mhaede, R. Wan, M. Grech
SURFACE & COATINGS TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
Mustafa A. Abdulstaar, Khaled J. Al-Fadhalah, Lothar Wagner
MATERIALS CHARACTERIZATION
(2017)
Article
Materials Science, Coatings & Films
Ann Zammit, Matthew Bonnici, Mansour Mhaede, Rui Wan, Lothar Wagner
SURFACE ENGINEERING
(2017)
Article
Materials Science, Coatings & Films
Mustafa Abdulstaar, Mansour Mhaede, Manfred Wollmann, Lothar Wagner
SURFACE & COATINGS TECHNOLOGY
(2014)
Article
Chemistry, Physical
Marie Le Dantec, Mustafa Abdulstaar, Marc Leparoux, Patrik Hoffmann
