Article
Nanoscience & Nanotechnology
Kai Zhang, Zhutao Shao, Christopher S. Daniel, Mark Turski, Catalin Pruncu, Lihui Lang, Joseph Robson, Jun Jiang
Summary: The compression of a commercial cast magnesium alloy at room and cryogenic temperatures showed that cryogenic deformation resulted in higher flow stress, higher strain hardening rate, and moderately reduced strain to failure compared to room temperature deformation. This was attributed to the increased fraction of finer twins and twin twin interactions at cryogenic temperatures, which was found to be more effective in hardening than dislocation density.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yuyu Li, Bowen Yang, Tingzhuang Han, Zhibing Chu, Chun Xue, Qianhua Yang, Xiaodong Zhao, Hong Gao
Summary: This study investigated the mechanical behavior and texture evolution of AZ31 magnesium alloy under different loading conditions through experiments and simulations, finding that pre-deformed samples exhibit higher yield strength during secondary compression and the high ductility of magnesium alloys can be achieved by activating pyramidal c + a slippage.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Jan Dittrich, Gergely Farkas, Daria Drozdenko, Michal Knapek, Kristian Mathis, Peter Minarik
Summary: A combination of advanced in-situ experimental techniques, including neutron diffraction, acoustic emission, and electron backscattered diffraction, was used to investigate the deformation behavior of magnesium alloys. The potential and limitations of these techniques were demonstrated in a study on the influence of crystallographic texture on deformation mechanisms in a hot-rolled sheet of the AZ31 alloy. The results showed the twinning activity and its evolution, as well as the deformed microstructure, providing valuable insights into the deformation mechanisms of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Materials Science, Multidisciplinary
Wenzhen Chen, Wenjie Wu, Wenke Wang, Wencong Zhang, Xinhua Liu, Hyoung Seop Kim
Summary: Texture adjusting approaches were proposed to improve tension-compression asymmetry in magnesium alloys. The dominant deformation mechanism during yielding was quantified based on Sachs assumption and primarily manifested as twinning inhibition and transition between twinning and slip. The impacts on yield strength and asymmetry were estimated by modified Hall-Petch relationship. Slight texture adjustments, particularly of basal texture divergence, can significantly improve strength asymmetry while avoiding severe strength loss, illustrating the importance and potential of texture adjustment in engineering.
MATERIALS RESEARCH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Haixuan Wang, Wenzhen Chen, Wencong Zhang, Daqing Fang, Songhui Wang, Wenke Wang
Summary: Through the compression-extrusion process, a fine grain and weak texture symmetric ZK61 magnesium alloy rod was achieved. The compression stage activated {10-12} twinning deformation leading to significant grain refinement, while in the extrusion stage, twinning gradually decreased and basal slip dominated the deformation, resulting in the formation of a weak texture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Wu Gong, Takuro Kawasaki, Ruixiao Zheng, Tsuyoshi Mayama, Binxuan Sun, Kazuya Aizawa, Stefanus Harjo, Nobuhiro Tsuji
Summary: The deformation behavior of a commercial AZ31 magnesium alloy was studied during uniaxial compression at 21 K and 298 K using in-situ neutron diffraction. Decreasing the deformation temperature led to a slight increase in yield stress, but a remarkable enhancement in both the fracture stress and fracture strain. The low temperature sensitivity of the {10 (1) over bar2} extension twinning resulted in the slight increase in yield stress. At 21K, basal slip was suppressed, while extension twinning was promoted, leading to a higher twin volume fraction. The suppression of {10 (1) over bar1}-{10 (1) over bar2} double twinning in the late stage of deformation was considered to be the reason for the delayed fracture at 21 K.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Industrial
X. M. Chen, W. Z. Chen, L. X. Zhang, H. X. Wang, W. K. Wang, W. C. Zhang
Summary: Three combined extrusion techniques were used to fabricate three typical {0002} basal textures in fine-grained ZK61 magnesium alloy, and their influence on tension-compression asymmetry was evaluated. The study showed that basal texture dispersion decreased tension-compression asymmetry and achieved high-strength symmetrical ZK61 magnesium alloy successfully.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Feng Jingkai, Zhang Dingfei, Yuan Yuan, Zhao Yang, Chen Xia, Chai Sen-sen, Hu Hongjun, Jiang Bin, Pan Fusheng
Summary: AZ31 rods were prepared using the ES process with different shearing angles, and the microstructure evolution was studied by various microscopy methods. The results showed that as the shearing angle decreased, the proportion of large grain areas increased and the grain size also increased.
RARE METAL MATERIALS AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, S. Kamado
Summary: After cold-rolling an Mg-6Zn-0.3Ca alloy sheet with a strong basal texture, anomalous double twinning occurred with the (0001) pole aligned to the transverse direction. These twins served as nucleation sites for statically recrystallized grains during annealing, resulting in weak texture features in the annealed sheet with transverse-direction split (0001) poles.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Stefanus Harjo, Wu Gong, Kazuya Aizawa, Takuro Kawasaki, Michiaki Yamasaki
Summary: An investigation was conducted on the effects of microstructural evolutions in the HCP a matrix (aMg) and the long-period stacking ordered phase (LPSO) of Mg97Zn1Y2 alloy on its mechanical properties. It was found that aMg acted as the soft phase and LPSO as the hard phase, and hot-extrusion improved the strength of both. With varying the extrusion ratio (R), different microstructural changes were observed, such as dynamic recrystallization and grain growth in aMg, and the development of kink bands and texture in LPSO. The strength improvement of LPSO compensated for the strength decrease of aMg at high R values, maintaining the high ultimate tensile strength of the alloy.
Article
Engineering, Manufacturing
Guoguo Zhu, Chong Yang, Ge Shen, Yan Peng, Baodong Shi
Summary: The tensile and compressive pre-yield mechanical behavior of a rolled AZ31 Mg alloy sheet was investigated using cyclic loading-unloading tests. It was found that the pre-yielding mechanical response exhibited microplasticity and anelasticity during tension and compression, respectively. A stress dependent elastic modulus model was developed and verified through experimental comparisons. The asymmetry in mechanical behavior between tension and compression was attributed to the nucleation mechanism of {10-12} twin boundaries.
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2022)
Article
Chemistry, Physical
Unissa Nichul, Rajesh Khatirkar, Ashish Dhole, Vijay Hiwarkar
Summary: The evolution of microstructure and crystallographic texture of a single-phase Beta-C titanium alloy subjected to uniaxial cold compression was studied, showing the formation of shear bands and specific grain orientations. The dominant crystallographic texture components developed during compression were identified as CD//<100> fiber and CD//<111> fiber. The gradual change in texture with increasing compression was observed, with the full constraint Taylor model showing a reasonably good match between simulated and experimental results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Liangwen Xie, Xianyong Zhu, Yuexiang Fan, Song Yang, Cheng Jiang, Yulai Song
Summary: The B-fiber texture in friction-stir welding of Mg-4.6Al-1.2Sn-0.7Zn magnesium alloy was investigated using electron-backscatter diffraction technique. The {0001} base plane of texture tended to align with the effective geometric shear plane induced by the tool shoulder and the pin. The texture intensity showed a symmetric distribution in the shoulder-affected zone and gradually increased from the retreating side to the advancing side in the pin-affected zone. The non-uniform distribution of texture on the welded joint was attributed to inhomogeneous shear plastic strain and material transfer.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zifan Wang, Jingwei Chen, Oxana V. Magdysyuk, Fatih Uzun, Alexander M. Korsunsky
Summary: This paper introduces a new method to extract texture information from single shot diffraction patterns and demonstrates another texture analysis method based on single shot X-ray diffraction. The effectiveness of both methods is proven through evaluation on polycrystalline nickel-based superalloy samples. Additionally, a new metric is proposed to quantify the matching quality of pole figures.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Nikolas Hrabe, Thomas Gnaupel-Herold, Timothy Quinn
INTERNATIONAL JOURNAL OF FATIGUE
(2017)
Article
Engineering, Mechanical
Saadi A. Habib, Akhtar S. Khan, Thomas Gnaupel-Herold, Jeffrey T. Lloyd, Scott E. Schoenfeld
INTERNATIONAL JOURNAL OF PLASTICITY
(2017)
Article
Engineering, Manufacturing
Lindsey Bass, Justin Milner, Thomas Gnaupel-Herold, Shawn Moylan
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
(2018)
Article
Materials Science, Multidisciplinary
A. Telang, T. Gnaupel-Herold, A. Gill, V. K. Vasudevan
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Instruments & Instrumentation
B. Heacock, M. Arif, D. G. Cory, T. Gnaeupel-Herold, R. Haun, M. G. Huber, M. E. Jamer, J. Nsofini, D. A. Pushin, D. Sarenac, I. Taminiau, A. R. Young
REVIEW OF SCIENTIFIC INSTRUMENTS
(2018)
Article
Chemistry, Multidisciplinary
Adam Creuziger, Christopher A. Calhoun, Whitney A. Poling, Thomas Gnaupel-Herold
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2018)
Article
Metallurgy & Metallurgical Engineering
Adam Creuziger, Whitney A. Poling, Thomas Gnaeupel-Herold
STEEL RESEARCH INTERNATIONAL
(2019)
Article
Engineering, Mechanical
Angela Y. Ku, Akhtar S. Khan, Thomas Gnaupel-Herold
INTERNATIONAL JOURNAL OF PLASTICITY
(2020)
Article
Materials Science, Coatings & Films
V. Luzin, P. Spiridonov, K. Spencer, T. Gnaupel-Herold
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
S. Jiang, R. Lin Peng, Z. Hegedus, T. Gnaupel-Herold, J. J. Moverare, U. Lienert, F. Fang, X. Zhao, L. Zuo, N. Jia
Summary: By studying the micromechanical behavior and mechanical properties of multilayered composites, it is found that the Nb layers are strengthened by dislocations, grain boundaries, and heterophase interfaces, while the {211} grains mainly contribute to global strain hardening. The softer Ti grains extend global strain hardening to a wider range and delay necking.
Article
Engineering, Manufacturing
Thien Q. Phan, Maria Strantza, Michael R. Hill, Thomas H. Gnaupel-Herold, Jarred Heigel, Christopher R. D'Elia, Adrian T. DeWald, Bjorn Clausen, Darren C. Pagan, J. Y. Peter Ko, Donald W. Brown, Lyle E. Levine
INTEGRATING MATERIALS AND MANUFACTURING INNOVATION
(2019)
Article
Engineering, Multidisciplinary
Y. Prawoto, S. Manville, T. Sakai, L. Lee, M. Tanaka, T. Gnaupel-Herold
JOURNAL OF FAILURE ANALYSIS AND PREVENTION
(2019)
Proceedings Paper
Engineering, Manufacturing
Justin L. Milner, Thomas Gnaupel-Herold
PROCEEDINGS OF THE ASME 13TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE, 2018, VOL 2
(2018)
Proceedings Paper
Materials Science, Characterization & Testing
V. Luzin, K. Spencer, M. R. Hill, T. Wei, M. Law, T. Gnaupel-Herold
MECHANICAL STRESS EVALUATION BY NEUTRON AND SYNCHROTRON RADIATION, MECA SENS 2017
(2018)
Article
Multidisciplinary Sciences
Mohammad Masoomi, Nima Shamsaei, Robert A. Winholtz, Justin L. Milner, Thomas Gnaupel-Herold, Alaa Elwany, Mohamad Mahmoudi, Scott M. Thompson