Article
Materials Science, Multidisciplinary
Tianjiao Li, Jiang Zheng, Manoj Gupta, Liuyong He, Lihong Xia, Bin Jiang
Summary: Abundant {10-12} twins were observed in a extruded Mg-2.8Y (wt. %) sheet with RE texture during compression and reverse tension. The deformation mechanisms were studied quantitatively, and twin variants with higher Schmid factors were activated preferentially. The crystallographic characteristics of twinning transfer were analyzed through grain boundary misorientation angle and geometric compatibility factor. The distribution of short twin chains and restriction of long twin bands were influenced by texture and loading path.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Hossein Fallahi, Chris Davies
Summary: This study investigated the microstructure and texture evolution of magnesium alloy samples during cyclic loading, revealing the formation of twin chains and the impact of pre-compression on material behavior. Twin transmission frequency decreases with increasing grain boundary angles, and the presence of residual primary twins in pre-compressed material leads to early formation of secondary twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Mohammadhadi Maghsoudi, Henry Ovri, Tobias Krekeler, Markus Ziehmer, Erica T. Lilleodden
Summary: This investigation examined the impact of solutes on the migration of a Gd-decorated twin boundary in a Mg4wt.% Gd binary alloy. The study focused on the stress-strain response and defect structure after (de)twinning, and compared the results to those of pure Mg under the same conditions. The critical stresses for twinning and detwinning increased by 29% and 10% respectively in the presence of Gd, due to the pinning effect of Gd atoms. In contrast, pure Mg experienced a 68% decrease in detwinning stress due to the absence of solute atoms.
Article
Nanoscience & Nanotechnology
Tianjiao Li, Jiang Zheng, Haoge Shou, Rong Shi, Yongfa Zhang, Guilan Wen, Kang Huang, Dongdi Yin, Jinsong Rao
Summary: This study quantitatively and statistically investigated the effects of 3% Y addition on the deformation modes and transferability of Mg sheets during strain-controlled tension-compression low-cycle fatigue at room temperature. The results showed that Mg-3Y alloy exhibited enhanced activity of various slip systems and lower twinning-detwinning activity compared to pure Mg, and it had a higher likelihood of slip transfer.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Hossein Fallahi
Summary: This study used quasi in situ EBSD to monitor the texture evolution of extruded magnesium alloy samples under cyclic tensile loading-unloading. The formation of twins was found to be dependent on slip and twin activity in neighboring grains. Slip-trace analysis showed traces on different glide planes, and overlapping EBSD maps revealed the formation of primary and secondary twins. The position and orientation of the twins were calculated, and it was observed that twin interactions with dislocations can lead to damage accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Wu Gong, Ruixiao Zheng, Stefanus Harjo, Takuro Kawasaki, Kazuya Aizawa, Nobuhiro Tsuji
Summary: The twinning and detwinning behavior of a commercial AZ31 magnesium alloy during cyclic compression-tension deformation was studied using various characterization techniques. The results showed that the volume fraction and number of residual twins increased with the number of cycles, leading to a decrease in the yield strength of compression deformation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Mechanical
F. H. Wang, H. Qiao, Y. Q. Wang, J. Dong, Y. Y. Jiang, P. D. Wu
Summary: The study utilized the EVPSC-TDT model to simulate the stabilized stress-strain hysteresis loops of rolled AZ31B plate in different material orientations under cyclic loading, showing good agreement with experimental data. Parameters influencing plastic response were investigated and the effect of initial CRSS on twinning and detwinning during reverse loading was studied. The discrepancies between simulations and experiments suggest the need for further investigation into microstructure-related properties and internal tensile stresses of twinned grains.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Nanoscience & Nanotechnology
C. D'Hondt, V Doquet, J. P. Couzinie
Summary: In situ tensile and reversed cyclic tests were conducted on a TWIP steel in a SEM, showing evidence of twinning/detwinning processes and their effects. It was observed that detwinning and retwinning occurred partially after load reversal, with stress variations close to twinning stress affecting the mechanical hysteresis of the material.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Lola Lilensten, Fan Sun, Azziz Hocini, Guy Dirras, Philippe Vermaut, Frederic Prima
Summary: The cyclic shear study reveals the formation of conventional {332} 113 113 systems favorable to backward stress in the microstructure of Ti-15Mo (wt.%) alloy with twinning induced plasticity deformation mechanism. The trace analysis and calculation of the resolved shear stress on the considered twinning systems help rationalize the formation of various deformation products.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Mechanical
Mohammadreza Yaghoobi, Zhe Chen, Aeriel D. Murphy-Leonard, Veera Sundararaghavan, Samantha Daly, John E. Allison
Summary: Deformation twinning and detwinning in extruded Mg-4Al were investigated using in-situ SEMDIC experiments and CPFE simulation. The study found a strong correlation between twin growth/shrinkage and the Schmid Factor. The CPFE model accurately captured the statistical aspects of both twinning and detwinning.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Metallurgy & Metallurgical Engineering
Tianjiao Li, Jinsong Rao, Jiang Zheng, Dongdi Yin, Haoge Shou, Yongfa Zhang, Rong Shi, Weichao Jing, Lihong Xia
Summary: In this study, an obvious in-plane anisotropy of cyclic deformation behavior was observed in an extruded Mg-3Y alloy sheet during strain-controlled tension-compression low-cycle fatigue. The extrusion direction samples displayed better fatigue resistance with almost symmetrical hysteresis loops and longer fatigue life compared with the transverse direction samples. The influences of texture on the deformation modes, cracking modes, and mechanical behavior of Mg-Y alloy sheets under cyclic loading were studied quantitatively and statistically.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Yuzhi Zhu, Dewen Hou, Qizhen Li
Summary: The twinning and detwinning behavior, as well as slip behavior, were studied in a textured AZ31 magnesium alloy under compressive and tensile strains along the rolling direction. The results showed that twinning initially occurred under compressive strain, while detwinning took place under reversed tensile strain. Slips were also activated to accommodate plastic deformation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Nanoscience & Nanotechnology
Kang Yan, Zhongwei Chen, Yanni Zhao, Wei Le, Yanqing Xue, Sufyan Naseem, Ali Wafaa
Summary: Deformation twinning is an important phenomenon in the plastic deformation of metals and alloys, alongside dislocation slip. In this study, the plastic deformation behavior of coarse-grained aluminum with high stacking fault energy was investigated using in-situ tensile TEM. The findings reveal that deformation twins occur at the crack tip under continuous applied stress, with the thickness of deformation twin increasing as incoherent twin boundaries (ITBs) appear. Analysis shows that Frank partial dislocation in deformation twins decompose into perfect dislocation and Shockley partial dislocation under applied stress. These dislocations slip along crystal planes and react to form dislocation combinations that constitute the ITBs. The results provide researchers with a new perspective on the role of ITBs in deformation twinning and the formation of dislocation combinations in ITBs.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
N. B. Zhang, Y. Y. Zhang, S. Chen, B. B. Zhang, Z. L. Li, H. L. Xie, L. Lu, X. H. Yao, S. N. Luo
Summary: This study investigates the onset of detwinning in magnesium alloy Mg-3Al-1Zn under continuous loading using real-time in situ synchrotron X-ray diffraction. The results reveal that detwinning of the {10 (1) over bar2} extension twins occurs immediately upon unloading, regardless of whether the twins are activated by tension parallel to or compression perpendicular to the c-axis fibers.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Takayuki Hama, Taiki Nakata, Koichi Higuchi, Hikaru Yoshida, Yuri Jono
Summary: The plastic deformation behavior of a rolled Mg-1.5Zn-0.1Ca alloy sheet with a thickness of 1 mm under different loading conditions is investigated. It is found that under tension, the stress is greater in the rolling direction than in the transverse direction, leading to an apparent plateau region in the latter. Under compression, similar plateau regions are observed in both directions. Under reverse loading, sigmoidal curves appear, more pronounced in the rolling direction. The macroscopic deformation behaviors are attributed to twinning and slip activities.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Physics, Applied
David R. Jones, Benjamin M. Morrow, Carl P. Trujillo, George T. Gray, Ellen K. Cerreta
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Nanoscience & Nanotechnology
Anil Kumar, Benjamin M. Morrow, Rodney J. McCabe, Irene J. Beyerlein
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Materials Science, Multidisciplinary
B. Feng, C. A. Bronkhorst, F. L. Addessio, B. M. Morrow, E. K. Cerreta, T. Lookman, R. A. Lebensohn, T. Low
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2018)
Article
Materials Science, Multidisciplinary
Benjamin M. Morrow, Thomas J. Lienert, Cameron M. Knapp, Jacob O. Sutton, Michael J. Brand, Robin M. Pacheco, Veronica Livescu, John S. Carpenter, George T. Gray
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
B. Feng, C. A. Bronkhorst, F. L. Addessio, B. M. Morrow, W. H. Li, T. Lookman, E. K. Cerreta
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2019)
Article
Materials Science, Multidisciplinary
D. W. Brown, D. P. Adams, L. Balogh, J. S. Carpenter, B. Clausen, V Livescu, R. M. Martinez, B. M. Morrow, T. A. Palmer, R. Pokharel, M. Strantza, S. C. Vogel
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Coatings & Films
David R. Jones, Benjamin M. Morrow, Kendall J. Hollis
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2020)
Article
Physics, Applied
D. R. Jones, S. J. Fensin, B. M. Morrow, D. T. Martinez, R. S. Hixson
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Multidisciplinary Sciences
Shujuan Wang, Mingyu Gong, Rodney J. McCabe, Laurent Capolungo, Jian Wang, Carlos N. Tome
Article
Geochemistry & Geophysics
Sabrina Tecklenburg, Roberto Colina-Ruiz, Sovanndara Hok, Cynthia Bolme, Eric Galtier, Eduardo Granados, Akel Hashim, Hae Ja Lee, Sebastien Merkel, Benjamin Morrow, Bob Nagler, Kyle Ramos, Dylan Rittman, Richard Walroth, Wendy L. Mao, Arianna E. Gleason
Summary: The study examined natural kamacite samples from the Gibeon meteorite to investigate phase transition kinetics under shock compression up to 140 GPa. It found that the hcp phase rapidly formed at maximum compression and persisted for up to 9.5 ns. The work provides insights into the dynamic material properties of metallic planetary bodies and Earth's core elasticity during impact events.
Article
Materials Science, Multidisciplinary
Yifan Zhang, Jonathan G. Gigax, Thomas J. Nizolek, John S. Carpenter, Matthew M. Schneider, Nan Li, Laurent Capolungo, Rodney J. McCabe
Summary: Nano metallic laminates (NMLs) show exceptional strengths, but limited ductility under tension. By conducting mesoscale tension tests, it is found that annealing at 800 degrees C significantly enhances the ductility and work hardenability of NMLs.
Article
Materials Science, Multidisciplinary
Yifan Zhang, Nan Li, Matthew M. Schneider, Thomas J. Nizolek, Laurent Capolungo, Rodney J. McCabe
Summary: This study investigates the formation process and mechanism of kink band (KB) in Cu/Nb nano metallic laminates (NMLs). It is found that the inhomogeneous microstructure plays a key role in the formation of KB, leading to the accumulation of geometrically necessary dislocations (GNDs) and the formation of tilt geometrically necessary boundaries (GNBs) near KB boundaries (KBBs). Furthermore, once the layer-parallel slip systems are activated, preexisting lattice dislocations and dislocations nucleating from interfaces will accumulate as GNDs near KBBs, promoting the evolution of KB.
Proceedings Paper
Physics, Condensed Matter
G. T. Gray, C. M. Knapp, D. R. Jones, V. Livescu, S. Fensin, B. M. Morrow, C. P. Trujillo, D. T. Martinez, J. A. Valdez
SHOCK COMPRESSION OF CONDENSED MATTER - 2017
(2018)
Proceedings Paper
Physics, Condensed Matter
E. K. Cerreta, F. L. Addessio, C. A. Bronkhorst, D. R. Jones, T. Lookman, D. T. Martinez, B. M. Morrow, P. A. Rigg, C. P. Trujillo
SHOCK COMPRESSION OF CONDENSED MATTER - 2017
(2018)
Article
Materials Science, Multidisciplinary
Veronica Livescu, Cameron M. Knapp, George T. Gray, Ramon M. Martinez, Benjamin M. Morrow, Bineh G. Ndefru
