Article
Materials Science, Multidisciplinary
Duofei Zheng, Qingchun Zhu, Xiaoqin Zeng, Yangxin Li
Summary: The volume fraction and distribution of long-period stacking ordered (LPSO) phase have a significant impact on the strengthening of Mg alloys. The LPSO phase formed at grain boundary has a higher strengthening effect than that formed within the alpha-Mg matrix, but it compromises the solid-solution strengthening effect due to the consumption of alloying elements.
Article
Chemistry, Physical
P. Emadi, B. Andilab, K. Borodianskiy, C. Ravindran
Summary: The use of lightweight alloys, such as magnesium, is crucial for improving fuel efficiency and reducing emissions in automobiles, as well as increasing the range of electric vehicles. This study investigated the effects of SiC nanoparticles on the microstructure and mechanical properties of Mg-Al-Zn-Mn alloy composites. The addition of SiC resulted in significant grain refinement, more uniform phase dispersion, and improved tensile strength, making it a promising material for strengthening light alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Sang-Hwa Lee, Jae-Gil Jung, Sung-Il Baik, David N. Seidman, Min-Seok Kim, Young-Kook Lee, Kwangjun Euh
Summary: The research revealed that the formation and evolution of GPI and GPII zones during natural aging had a significant impact on the mechanical properties of the Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti alloy. The Zn/Mg atomic ratio, mean radius, number density, and volume fraction of the GP zones also played crucial roles in influencing the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Wujun Yin, Fabien Briffod, Takayuki Shiraiwa, Manabu Enoki
Summary: The high elastic modulus and deformation kinks of the long period stacking ordered (LPSO) phase in Mg-Zn-Y alloys significantly enhance the tensile yield strength, with a slight detriment or benefit to the ductility. Extrusion processing improves both strength and ductility through recrystallization of Mg grains. The activation of different plastic deformation mechanisms depends on the volume fraction and relative size of Mg and LPSO phases.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Hidetoshi Somekawa, Yoshikazu Todaka, Daisuke Ando, Motohiro Yuasa
Summary: The microstructures and mechanical properties of Mg-9at.%Y-6at.%Zn alloy processed by various methods were investigated. Deformation kink bands were induced regardless of the method used, and hardness increased with higher applied strains. The direction and magnitude of shear strains were found to impact the hardness values and multiple shear strains were effective in improving mechanical properties.
Article
Chemistry, Physical
Sabina Lesz, Malgorzata Karolus, Adrian Gabrys, Marek Kremzer
Summary: This study aims to investigate the influence of milling time on the phase composition and structure of Mg-based alloy synthesis products, using X-ray diffraction analysis and scanning electron microscopy studies among other methods. The goal is to refine the chemical composition and microstructure of the alloy.
Article
Chemistry, Physical
Guang Li Bi, Yashuo Wang, Jing Jiang, Jiarui Gu, Yuandong Li, Tijun Chen, Ying Ma
Summary: The microstructure and mechanical properties of extruded Mg-2Y-1Zn, Mg-2Y-0.5Zn-0.5Ni, and Mg-2Y-1Ni alloys were systematically studied, showing the significant influence of different morphologies of LPSO phase on the alloy properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Amir Hossein Asadi, Parastoo Mahmoud Kalayeh, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy
Summary: In this study, the microstructures, mechanical properties during tensile deformation, and precipitation kinetics of Mg95.5Y3Zn1.5 and Mg95.5Y3Ni1.5 magnesium alloys were compared. The investigation revealed that the peak aging treatment led to the formation of lamellar 14H-LPSO phase in Mg95.5Y3Zn1.5 alloy and bMODIFIER LETTER PRIME-Mg7Y particles in Mg95.5Y3Ni1.5 alloy, resulting in improved ultimate tensile strength and total elongation. The analysis of formation kinetics indicated that the activation energy for phase transformation was different for the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Koji Hagihara, Ryohei Ueyama, Toko Tokunaga, Michiaki Yamasaki, Yoshihito Kawamura, Takayoshi Nakano
Summary: This study quantitatively evaluated the kink-band strengthening using a Mg-Zn-Y single crystal, revealing the origin of the anomalous ability of kink bands acting as barriers to dislocation motion. The high ability of a kink-band boundary to hinder dislocation motion is attributed to its peculiar hierarchical structure, where many small kink bands with high crystal rotation angles accumulate in a localized region.
MATERIALS RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
Sabina Lesz, Bartlomiej Hrapkowicz, Malgorzata Karolus, Klaudiusz Golombek
Summary: Magnesium-based materials show great potential for medical implants, but proper alloying elements and methods are crucial for enhancement. Mechanical alloying is an effective method for designing alloys with desired structures and properties. The hardness of the materials is found to be correlated with the milling time and particle size during the mechanical alloying process.
Review
Chemistry, Physical
Daiyi Deng, Renju Cheng, Bin Jiang, Mingbo Yang, Haijun Wang, Yongfeng Zhou, Chuntang Yu, Yanlong Ma, Jian Peng, Fusheng Pan
Summary: This article reviews the transformation of the main strengthening phases in Mg-Gd(Y)-Zn alloys and proposes research recommendations for the future development of high-performance and ultra-high-strength casting Mg-RE alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Reza Alizadeh, Jingya Wang, Javier LLorca
Summary: The mechanical properties of Mg-4wt.% Zn alloy single crystals were investigated through micropillar compression testing, revealing that pyramidal slip in precipitation hardened alloy leads to homogeneous deformation and strong hardening. The presence of rod-shape precipitates perpendicular to the basal plane significantly reduces the plastic anisotropy of Mg.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Crystallography
Kamil Kowalski, Michal Drzewiecki, Mieczyslaw Jurczyk
Summary: The binary Zn-1wt.% X (X = Mg or Sr) alloys were modified by micro-arc oxidation treatment, forming a zinc oxide layer that improved corrosion resistance and surface wetting properties.
Article
Nanoscience & Nanotechnology
Sung-Jae Won, Hyeongsub So, Leeseung Kang, Soong Ju Oh, Kyou-Hyun Kim
Summary: High-strength Al-Zn-Mg-Cu-based alloys (7xxx series) are developed by optimizing the Mg/Cu content and adding trace amounts of Sc. The improved mechanical strength is attributed to nanoscopic structural distortion caused by excessive solutes of Mg and Cu, as well as grain refinement induced by Sc microalloying.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Xiaojie Zhou, Wenying Xiong, Gang Zeng, Hongchao Xiao, Jian Zhang, Xianzheng Lu, Xiaomin Chen
Summary: The combined effects of LPSO orientation and alpha-Mg texture on tensile anisotropy were investigated, with the extrusion direction showing optimal mechanical properties, the 45 degrees direction exhibiting high elongation, and the transverse direction having inferior strength and elongation simultaneously. LPSO orientation contributes to strength anisotropy through different load-bearing strengthening effects along different tensile axes, while alpha-Mg texture contributes to strength anisotropy through stronger grain boundary strengthening effects. However, LPSO orientation, rather than alpha-Mg texture, accounts for ductility anisotropy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
G. Garces, J. Medina, P. Perez, K. Mathis, K. Horvath, A. Stark, N. Schell, P. Adeva
Article
Engineering, Mechanical
G. Garces, K. Mathis, J. Medina, K. Horvath, D. Drozdenko, E. Onorbe, P. Dobron, P. Perez, M. Klaus, P. Adeva
INTERNATIONAL JOURNAL OF PLASTICITY
(2018)
Article
Nanoscience & Nanotechnology
J. Medina, P. Perez, G. Garces, A. Stark, N. Schell, P. Adeva
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Chemistry, Physical
Gerardo Garces, Sandra Cabeza, Rafael Barea, Pablo Perez, Paloma Adeva
Article
Nuclear Science & Technology
M. A. Monge, P. Adeva, A. Munoz, P. Perez
FUSION ENGINEERING AND DESIGN
(2019)
Article
Materials Science, Multidisciplinary
Gerardo Garces, Pablo Perez, Rafael Barea, Judit Medina, Andreas Stark, Norbert Schell, Paloma Adeva
Article
Materials Science, Multidisciplinary
Sandra Cabeza, Pablo Perez Zubiaur, Gerardo Garces, Carmen Andrade, Paloma Adeva
Article
Metallurgy & Metallurgical Engineering
J. Medina, G. Garces, P. Perez, A. Stark, N. Schell, P. Adeva
JOURNAL OF MAGNESIUM AND ALLOYS
(2020)
Article
Materials Science, Multidisciplinary
Ulises Martin, Jacob Ress, Pablo Perez, Paloma Adeva, David M. Bastidas
Summary: The corrosion performance of a new developed high-entropy alloy (HEA) was studied, and it was found to have good corrosion resistance under neutral and acidic pH conditions.
Article
Materials Science, Multidisciplinary
Pablo Perez, Judit Medina, Maria Fernanda Vega, Gerardo Garces, Paloma Adeva
Summary: The effect of thermos-mechanical processing and thermal treatments on the microstructure of a single phase fcc-based Al5Co15Cr30Fe25Ni25 high entropy alloy is evaluated. Different routes of thermo-mechanical processing (forging, cold rolling, warm rolling, hot rolling) were followed and the microstructural evolution of highly deformed cold rolled sheets with annealing temperature was analyzed. The results show that recrystallization of the microstructure begins at 600 degrees C, leading to higher hardness in the thermo-mechanically treated alloys compared to the annealed alloys.
Article
Engineering, Multidisciplinary
G. Ruiz-Menendez, C. Andrade, G. Carro-Sevillano, C. Pena, P. Adeva, J. Medina, R. Fernandez
Summary: In this study, rebars extracted from a reinforced concrete viaduct were investigated to understand their failure mode. It was found that the rebars broke in a tilted pattern without reduction in diameter. Hardness measurements on the cross section of the rebars revealed that the failure mode was either tensile plastic collapse or fatigue. The presence of corrugations on the rebars caused stress concentration, explaining the observed tilted appearance of the fracture surface. Further studies should be conducted to explore the influence of different corrugation patterns on the fracture appearance.
RESULTS IN ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Shuai Zhang, Shuye Zhang, Hongzhi Zhou, Kyung-Wook Paik, Tianran Ding, Weimin Long, Sujuan Zhong, Peng He
Summary: Microwave Hybrid Heating (MHH) is a promising method for material joining, allowing for selective and uniform heating. This experimental study focused on investigating the characteristics and reliability of joints made using nano-Sn-3.0Ag-0.5Cu soldering paste and MHH technique. The research findings showed that the shear strength of the joints reached its peak value under specific microwave power and exposure time, but decreased after thermal shock tests.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Peibin Ma, Mingyang Wang, Aiying Chen, Lijian Gu, Zhiyi Ding, Xiaogui Wang, Bin Gan
Summary: Nano-twinned boundaries in high-temperature alloys play a crucial role in regulating the distribution of nano-precipitates and enhancing mechanical properties.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jiachen Zhang, Fan Lu, Xinxin Liu, Taiwen Huang, Rui Li, Changsheng Tan, Guojun Zhang, Lin Liu
Summary: This study investigates the effects of Re and Ta interactions on the precipitation of the TCP phase in experimental alloys under long-term thermal exposure. The study finds that microstructure segregation is not fully eliminated even with standard heat treatment, and the interaction between Re and Ta enhances the formation of the TCP phase. Thermodynamic calculations and first-principles analysis reveal that Re significantly improves the driving force of TCP phase precipitation. The study also observes a phase transition from the sigma-phase to the P-phase, with Ni playing a crucial role in the diffusion process.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Ronit Roy, Adil Shaik, Matthew Topping, Fei Long, Mark R. Daymond
Summary: This study demonstrates the improvements in characterizing localized dislocation distribution using the HR-EBSD method compared to the conventional approach. Two extreme examples of deformation conditions were investigated to show the efficacy of HR-EBSD in identifying dislocations and subtle features. The direct correlation between slip bands and HR-EBSD estimated GNDs is also presented, enhancing the scope of this approach in identifying individual slip bands.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wenshan Guo, Hui Zhang, Qingjun Zhou, Guangchun Xiao, Ning Guo, Wei Zhao, Gang Wang
Summary: The microstructures and corrosion resistance of TC11 components were significantly improved using a high-power, high-speed laser metal deposition (LMD) process and subsequent post-heat treatment, with greater improvements observed in the deposition direction. The significant improvement of corrosion resistance in the deposition direction is mainly due to the weakening of the charged galvanic corrosion effect between the non-interlayer zone and interlayer zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Xu, Rui Cao, Junheng Gao, Yu Zhang, Haitao Zhao, Shuize Wang, Yuhe Huang, Guilin Wu, Honghui Wu, Chaolei Zhang, Xinping Mao
Summary: In this study, the microstructures and mechanical properties of interphase precipitation strengthening micro-alloyed steels were investigated. The addition of Cr was found to increase the yield strength without significant decrease of ductility. Thermodynamics analysis revealed that the addition of Cr led to grain refinement and decrease of sheet spacing of nanoprecipitates. Calculations showed that the decrease of interphase-precipitated carbides sheet spacing and the refinement of grain size were responsible for the strength enhancement of Cr microalloyed steel.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Geng Liu, Linran Yu, Jie Su, Ran Ding, Min Xiong, Qi Gao
Summary: In this study, a flash austenitization heat treatment approach was used to achieve a dual-phase microstructure consisting of retained austenite and fine-grained ferrite in low-carbon TRIP steel. Phase-field simulations revealed the acceleration of ferrite transition kinetics in the Mn-depleted region and the influence of chemical heterogeneity of C and Mn on the stabilization of austenite.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zhichao Yang, Dehui Zheng, Zhen Wang, Tingbin Liang, Shuangbao Wang
Summary: In this study, the configurations, formation process, and properties of the Cu-rich layer formed during TJE of Al alloys were revealed using aberration-corrected scanning TEM (STEM), STEM image simulations, and first-principles calculations. The results showed a new orientation relationship between the Cu-rich layer and Al matrix, and provided insights into the formation mechanisms of the Cu-rich layer and Cu diffusion zone.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Shuai Chen, Ruyu Tian, Jiayue Wen, Yanhong Tian
Summary: In this study, the interfacial microstructure evolution and reliability of Cu/Sn-3.0Ag-0.5Cu (SAC305)/Ni and Cu/Sn-3.0Ag-0.5Cu-0.05TiO2 (SAC305-0.05TiO2)/Ni interconnections under thermal shock were investigated. The results showed that the addition of TiO2 nanoparticles can suppress the growth of interfacial IMCs and improve the reliability of the connections.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Yunbin Lu, Yangju Feng, Wei Wang, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui, Dongdong Zhuang, Hongyang Cao
Summary: In order to improve the wear resistance of titanium alloy, titanium matrix composites with network distributed TiBw were fabricated. The results showed that the wear rate of the composites decreased by 17.2% at room temperature and 38.4% at high temperature compared to the TA15 alloy. The TiBw in the composites enhanced work hardening, improved thermal conductivity, and effectively hindered dislocation movement and promoted dynamic recrystallization during high-temperature wear.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Jubert Pasco, Lu Jiang, Thomas Dorin, Ali Keshavarzkermani, Youliang He, Clodualdo Aranas Jr
Summary: The unique structure and solute distribution of CoCrMo alloys produced using Laser Powder Bed Fusion technique require custom heat-treating processes to achieve the targeted phase distribution and mechanical properties. This study investigates the phase transformation behavior and precipitate distribution of CoCrMo samples after aging heat treatment. The results show differences in phase fraction and nucleation sites between directly aged and solution heat-treated samples.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zipeng Ma, Meng Zhou, Baohong Tian, Yi Zhang, Heng Li, Xu Li, Jin Zou, Haoyan Hu, Ke Jing, Yong Liu, Alex A. Volinsky
Summary: In this study, two electrical contact composites were prepared using the vacuum hot pressing sintering endo-oxidation method. The addition of Y2O3 had no negative effects on the electrical conductivity and hardness of the composites. Moreover, it reduced the welding force and arc energy, and improved the stability of the contacts.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Wei Sun, Ning Cui, Shuling Zhang, Tiewei Xu, Xiaopeng Wang, Fantao Kong
Summary: A laminated composite was successfully fabricated and its microstructure and mechanical properties were investigated. The composite exhibited high bonding strength, improved flexural strength and fracture toughness, and superior tensile properties compared to the monolithic alloy.
MATERIALS CHARACTERIZATION
(2024)
Article
Materials Science, Multidisciplinary
Zih-You Wu, Yin-Ku Lee, Su-Yueh Tsai, Po-Yu Chen, Jenq-Gong Duh
Summary: With the development of the artificial intelligence (AI) industries, electronic packaging is advancing towards high density, high efficiency, and multi-functionality. The application of microbumps is necessary to achieve high density and small-scale interconnection. In this study, three types of full intermetallic compounds (IMCs) bumps were fabricated, and the mechanical and thermal properties of IMCs were analyzed. The results showed that the full IMCs bumps with added Ni and Zn exhibited consistent structure and excellent thermal stability, providing a reliable microstructure for application.
MATERIALS CHARACTERIZATION
(2024)
