Article
Materials Science, Multidisciplinary
Fuyang Gao, Yufan Guo, Wei Yu, Peng Jiang, Zhiqian Liao
Summary: The study focused on the microstructure transformation and texture characteristics of the friction stir welded joint of titanium alloy from the aspects of temperature and flow deformation. Various analysis methods were used to reveal the deformation mechanism of the welding process and to provide theoretical support for microstructure and texture regulation. This research aims to promote the wide application of FSW in producing high-quality titanium alloy joints.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
A. E. Davis, J. Donoghue, J. R. Kennedy, N. Byres, P. B. Prangnell
Summary: In-situ cooling experiments were conducted on Ti64 samples for the first time, revealing the development of alpha colonies. Primary alpha laths play a crucial role in influencing subsequent colony growth and transformation process by nucleating secondary alpha laths through sympathetic autocatalysis.
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, R. Abe, L. Geng, S. Kamado
Summary: The reheating at high temperature was used to control the textural features in a rolled Mg-Zn-Ca-Mn alloy sheet. Reheating at 450 degrees C caused grain coarsening, leading to the formation of double twinning and shear bands during rolling. Unexpectedly, the basal texture became strong due to the non-uniformly distributed dislocations. On the other hand, reheating at 350 degrees C resulted in uniform deformation-microstructure and apparent texture weakening during post-annealing.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Chang-Hee Cho, Ji-Woon Lee, Kwang-Tae Son, Soong-Keun Hyun
Summary: This study investigated the effects of strain rate on the texture evolution of Al-6Mg alloys during one hour of annealing at 300 degrees C. Grain growth was significant in the 0.1 s(-1) cold-sheared sample, while a texture transition from brass type to copper type was observed in the 1 s(-1) sample. The misorientation indices of all samples decreased with annealing time, indicating a stronger texture anisotropy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Igor Vysotskiy, Sergey Malopheyev, Ivan Zuiko, Sergey Mironov, Rustam Kaibyshev
Summary: This study focuses on the crystallographic aspects of laser-powder bed fusion of 17-4 PH martensitic steel. The crystallization process showed an epitaxial mechanism and resulted in a specific crystal structure relationship between ferrite and austenite. Grain-boundary austenite was found to have a relationship with adjacent ferrite grains. The phase transformation from austenite to martensite did not exhibit significant variant selection.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Alessandro Carrozza, Alberta Aversa, Federico Mazzucato, Emilio Bassini, Diego Manfredi, Sara Biamino, Anna Valente, Paolo Fino
Summary: This work investigated the effects of different heat treatments on DED-produced Ti-6Al-4V samples. Different microstructures were achieved through annealing treatments, but a grain memory effect causing uneven grain size increase was detected.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Yang Yang, Jun-yi Huang, Hai-min Wang, Ji-xiong Chen, Zhao-liang Guo
Summary: A series of detonation experiments were conducted to study the grain boundary effects during the primary spallation of high-purity copper cylinder. The results indicated that the critical stress of deformation twinning in cylindrical copper increased, and the nucleation sites of spallation damage were influenced by both the grain orientation and the angle between grain boundaries and radial impact-stress direction.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Multidisciplinary Sciences
Michael Chapman, Marc De Graef, Richard D. James, Xian Chen
Summary: The article introduces a scheme for assigning martensite variant in martensite materials undergoing solid-solid phase transformation using electron backscatter diffraction. It offers an algorithm to assign martensite variants to specific microscopic regions and to check the elastic compatibility of microstructures in shape memory alloys with low hysteresis and high reversibility. This study is part of the theme issue on mathematical design of complex materials.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Chemistry, Physical
Iztok Naglic, Blaz Leskovar, Zoran Samardzija, Bostjan Markoli
Summary: This study investigated the influence of gallium addition on the phases formed in Al-Mn alloys during casting, revealing that an increase in gallium content led to the formation of IQCs and DQCs in the alloys. Microanalysis showed that IQCs contained more gallium and less manganese compared to DQCs.
Article
Chemistry, Physical
M. Myshlyaev, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova, G. Raab, S. Mironov
Summary: In this study, the advanced capabilities of electron backscatter diffraction (EBSD) were used to investigate the role of dynamic recrystallization in the superplastic deformation of a fine-grained material. The results showed that dynamic recrystallization occurred only locally and had a minor contribution to microstructural evolution. Therefore, the preservation of the nearly-equiaxed grain morphology associated with superplasticity cannot be attributed to dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Esmaeil Damavandi, Salman Nourouzi, Sayed Mahmood Rabiee, Roohollah Jamaati, Jerzy A. Szpunar
Summary: The Bc route of ECAP method was successfully applied to analyze microstructure of Al-Si-Cu alloy. At least four passes of route -B-C are needed to achieve uniform distribution of fine IMCs and ESPs. PSN and CDRX are important mechanisms in refining the aluminum matrix in Al-Si-Cu alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
K. Sai Jyotheender, M. K. Punith Kumar, Chandan Srivastava
Summary: Electrogalvanization at room temperature using aqueous bath is widely used to protect steel in highly corrosive environments. However, low temperature galvanization at -2 degrees C produces Zn coating with significantly lower corrosion current density, leading to higher corrosion resistance compared to coatings deposited at higher temperatures. The texture of the coatings is highly sensitive to the deposition temperature, with coatings deposited at 2 degrees C showing the highest corrosion resistance due to specific grain orientation and grain boundary constitution.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Merve Nur Dogu, Kemal Davut, Muhannad Ahmed Obeidi, Mustafa Alp Yalcin, Hengfeng Gu, Thaddeus Song En Low, Jon Ginn, Dermot Brabazon
Summary: The recrystallization and grain growth behavior of IN718 alloy manufactured by laser powder bed fusion were studied. The texture evolution of the samples under different temperatures and holding times was investigated, and it was found that the formation of recrystallization nuclei was related to high defect density regions, while the presence of non-coherent precipitates limited the growth of recrystallized grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Alexander Kalinenko, Igor Vysotskiy, Sergey Malopheyev, Sergey Mironov, Rustam Kaibyshev
Summary: This study investigates the relationship between thermal cycle generated during friction-stir welding of a 6061 aluminum alloy and resulting grain structure evolution. The grain structure evolution is mainly controlled by continuous recrystallization, while at elevated temperatures, competitive recovery hinders recrystallization kinetics.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Rameez R. Tamboli, Benjamin Guennec, Hiroshi Fujiwara, Kei Ameyama, Basudev Bhattacharya, Suhash Ranjan Dey
Summary: This study focuses on comparative investigations of titanium-niobium stabilized interstitial free steels with different aluminum content, and finds that the steel with 0.17 wt% Al exhibits a stronger ND fiber texture and faster recrystallization kinetics, indicating the beneficial effects of aluminum addition in interstitial free steel.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Chemistry, Physical
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Materials Science, Multidisciplinary
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
MATERIALS CHARACTERIZATION
(2015)
Article
Chemistry, Physical
T. Konkova, I. Valeev, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
Tatyana Konkova, Sergey Mironov, Alexander Korznikov, Galia Korznikova, Mikhail M. Myshlyaev, S. Lee Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Materials Science, Multidisciplinary
T. Konkova, S. Rahimi, S. Mironov, T. N. Baker
MATERIALS CHARACTERIZATION
(2018)
Article
Materials Science, Multidisciplinary
Galia Korznikova, Sergey Mironov, Tatyana Konkova, Ainur Aletdinov, Rida Zaripova, Mikhail Myshlyaev, Sheldon Semiatin
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
A. Aletdinov, S. Mironov, G. F. Korznikova, T. Konkova, R. G. Zaripova, M. M. Myshlyaev, S. L. Semiatin
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
S. Rahimi, T. N. Konkova, I. Violatos, T. N. Baker
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Ainur Aletdinov, Sergey Mironov, Galia Korznikova, Tatyana Konkova, Rida Zaripova, Mikhail Myshlyaev, S. Lee Semiatin
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
M. Myshlyaev, S. Mironov, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova
Article
Materials Science, Multidisciplinary
C. Hicks, T. Konkova, P. Blackwell
MATERIALS CHARACTERIZATION
(2020)
Article
Chemistry, Physical
Mikhail Myshlyaev, Sergey Mironov, Galia Korznikova, Tatyana Konkova, Elena Korznikova, Ainur Aletdinov, Gulnara Khalikova, George Raab, Sheldon Lee Semiatin
Summary: The application of Electron backscatter diffraction (EBSD) revealed that microstructural changes in a fine-grain Al-Mg-Li alloy during superplastic behavior were significantly influenced by continuous dynamic recrystallization. This mechanism involved the transverse subdivision of pre-elongated grains transforming into chains of nearly-equiaxed grains. Experimental observations, including significant strain hardening, grain elongation, and the development of crystallographic texture, provided strong evidence of intragranular slip operating during superplastic flow.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
M. Myshlyaev, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova, G. Raab, S. Mironov
Summary: In this study, the advanced capabilities of electron backscatter diffraction (EBSD) were used to investigate the role of dynamic recrystallization in the superplastic deformation of a fine-grained material. The results showed that dynamic recrystallization occurred only locally and had a minor contribution to microstructural evolution. Therefore, the preservation of the nearly-equiaxed grain morphology associated with superplasticity cannot be attributed to dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
A. F. Aletdinov, S. Y. Mironov, G. F. Korznikova, R. G. Zaripova, T. N. Konkova, M. M. Myshlyaev
MATERIALS PHYSICS AND MECHANICS
(2017)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.