Article
Nanoscience & Nanotechnology
Gong Na, Nasrin Farzana, Wang Yong, Wu Huibin, Keffer David, Maroulas Vasileios, Rios Orlando
Summary: The study utilized electron backscatter diffraction analysis to investigate the effect of annealing temperature on the fraction of high-angle grain boundaries and Schmid factor in nano/ultrafine-grained 18Cr-8Ni stainless steel. By employing persistent homology, the study reduced the dimensionality of information describing the complex processing-structure-property relationship. Results showed that different annealing temperatures lead to different crystal structures, resulting in varying mechanical properties of the steel.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Materials Science, Multidisciplinary
Pavel Dolzhenko, Marina Tikhonova, Marina Odnobokova, Rustam Kaibyshev, Andrey Belyakov
Summary: The aim of this review is to summarize recent achievements in the development of ultrafine-grained austenitic/ferritic stainless steels through large strain deformation. The paper discusses various methods of large strain deformation for producing ultrafine-grained metallic materials. It also explores the structural mechanisms responsible for grain refinement during plastic deformation and examines the physical and mechanical properties of ultrafine-grained stainless steels. The review concludes that the development of ultrafine-grained microstructures during severe plastic deformation is a result of continuous dynamic recrystallization, with the misorientations among strain-induced cells/subgrains progressively increasing.
Article
Materials Science, Multidisciplinary
S. Narayanswamy, R. Saha, P. P. Bhattacharjee
Summary: The study found that the evolution of microstructure in pearlite is influenced by cross-rolling, resulting in differences in lamellar structure, shear bands, and bent lamellae.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Guosheng Sun, Jizi Liu, Yuntian Zhu
Summary: By introducing a bi-modal heterostructure, Luders deformation in UFG 304 stainless steel can be effectively suppressed, leading to improved ductility and toughness without sacrificing strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xiao Qin, Zhe Liu, Huiqun Liu, Ruiqian Zhang, Qiangfu Pan, Yurong Wang, Jingyuan Pei
Summary: The recrystallization kinetics and texture evolution of warm-pilgered FeCrAl tubes were investigated. It was found that the tube exhibited significant anisotropy, leading to different recrystallization kinetics in the axial and circumferential directions. The stable microstructure was achieved by dispersing fine Laves phase particles in the ferrite matrix. The alpha-fiber texture decreased significantly, while the gamma-fiber texture increased after recrystallization. These findings are of great significance for the preparation and microstructure control of the final cladding tube.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Physical
Beata Skowronska, Tomasz Chmielewski, Mariusz Kulczyk, Jacek Skiba, Sylwia Przybysz
Summary: This study reduced the weakening of ultrafine-grained stainless steel friction joints by using high-speed friction welding, but a comprehensive assessment of joint properties still requires consideration of both microstructure and hardness.
Article
Materials Science, Multidisciplinary
Yi Li, Hai Wang, Konrad Koenigsmann, Hui Liu, Shuyuan Zhang, Ling Ren, Ke Yang
Summary: This study fabricated ultrafine-grained Ti6Al7Nb-xCu alloys through Cu alloying fabrication strategy and dynamic recrystallization. The results showed that Cu alloying effectively reduced the width of martensite laths and increased the nucleation rate of dynamic recrystallization. The Ti2Cu phase could pin the grain boundaries and inhibit their growth during high-temperature deformation. The Ti6Al7Nb-6Cu alloy with 6 wt% Cu content and a deformation temperature of 750℃ exhibited excellent mechanical properties, biocompatibility, and unique antibacterial properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Matruprasad Rout, Surjya K. Pal, Shiv Brat Singh
Summary: In this study, the microstructure evolution of austenitic stainless steel after deformation at elevated temperatures was investigated through thermo-mechanical processing. The results showed that at temperatures of 900 degrees C and 1000 degrees C, the microstructures of samples held for 2 seconds consisted of deformed grains, while the sample held at 1100 degrees C showed nearly complete recrystallization. The increase in holding time resulted in a decrease in low angle boundaries and an increase in high angle grain boundaries at all three temperatures.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Palash Chandra Maity, Narasimha Vinod Pulagara, K. N. Chaithanya Kumar, Indranil Lahiri, K. S. Suresh
Summary: The study demonstrates how to prevent the formation of strong cube texture on the surface of high-temperature annealed Ni foils subjected to large rolling reductions, while retaining the intensity of twin boundaries. The evolution of the surface texture of rolled and annealed foils is compared to conventional rolling, shear, and recrystallization texture components. The stability of the cube and ND-rotated cube components in rolled foils is discussed. Despite discontinuous recrystallization mechanisms, a significant fraction of rolling texture components is preserved after annealing. The suppression of the cube component is attributed to the constricted-annealing process and the activation of low-energy twin boundaries. Annealing twins are found to form through a growth fault mechanism during the recrystallization process.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Chunquan Liu, Xianhua Chen, Domonkos Tolnai, Yaobo Hu, Wei Zhang, Yusheng Zhang, Fusheng Pan
Summary: A remarkable annealing hardening effect was observed in gradient ultrafine-grained Mg-0.32Gd-0.11Zr (at.%) alloy sheet fabricated by sliding friction treatment. The annealed ultrafine-grained structure showed a higher hardening response than the annealed coarse-grained structure. The segregation of solute Gd atoms along grain boundaries and around defects contributed to the significant segregation hardening effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Wenwei Gao, Hai Wang, Konrad Koenigsmann, Shuyuan Zhang, Ling Ren, Ke Yang
Summary: In this study, a series of Ti-15Zr-xCu alloys were designed and fabricated to refine the grain size and suppress grain growth. Experimental results showed that Cu alloying significantly improved the mechanical properties of the alloys, resulting in better comprehensive mechanical performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yingze Liu, Jufu Jiang, Ying Zhang, Minjie Huang, Jian Dong, Ying Wang
Summary: In this study, the semisolid annealing of hot-rolled 2A14 Al alloy was investigated to provide proper parameters for the preparation of semisolid billets. The microstructure was characterized by various techniques, revealing the dissolution of α-Al2Cu equilibrium, the presence of coarse α-Al2Cu phase, ultrafine precipitates, and atomic clusters. The recrystallization mechanism was found to be dominated by continuous static recrystallization (CSRX), with the microtexture changing from preferred orientation to random orientation. The experimental results suggested that static recrystallization (SRX) occurred at a semisolid temperature and the Zener drag effect of fine precipitates on low-angle grain boundaries disappeared.
Article
Nanoscience & Nanotechnology
J. J. Li, Y. Z. Tian, Z. Zhang, R. X. Zheng, S. Gao, G. Y. Deng
Summary: The bulky specimens of 316LN stainless steel with recrystallized ultrafine-grained microstructure exhibit different yielding behavior and plastic flow at different temperatures.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Industrial
Meng Li, Renhao Wu, Dayong An, Jun Chen
Summary: This study demonstrates the fabrication of gradient ultrafine-grained (GUFG) heterostructure on mild steel sheets using friction stir-assisted incremental sheet forming (FS-ISF). The mechanisms of geometric dynamic recrystallization and continuous dynamic recrystallization are found to be responsible for the formation of GUFG structure. The spatial kinetics for GUFG structure formation are clarified by evaluating temperature, strain rate, and strain gradients.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
T. S. Orlova, A. M. Mavlyutov, M. Yu. Gutkin
Summary: The effect of decreased temperatures on the annealing-induced hardening of ultrafine-grained aluminum of commercial purity was revealed and discussed. The study showed that there is a critical deformation temperature at which the AIH effect is completely suppressed. The experimental results are consistent with the theoretical explanation provided.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ting Xiong, Wenfan Yang, Shijian Zheng, Zhaorui Liu, Yiping Lu, Ruifeng Zhang, Yangtao Zhou, Xiaohong Shao, Bo Zhang, Jun Wang, Fuxing Yin, Peter K. Liaw, Xiuliang Ma
Summary: The study reveals the orientation relationship of the interfaces in EHEA and emphasizes the important roles of the dominant and secondary interfaces in nucleation and slip transmission of dislocations, which impact the ductility and strength of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Fanyong Zhang, Chao Li, Shu Yan, Jining He, Fuxing Yin
Summary: Ti-Si-C composite coatings were fabricated by plasma spraying using Ti/Si/graphite agglomerates as feedstock. Ar-annealing was carried out to enhance the performance of the coatings. The coatings showed improved mechanical properties after annealing, with increased hardness, fracture toughness, and a uniform microstructure.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Dongyang Li, Cai Liu, Dajian Huang, Miaoxin Zhang, Xin Zhang, Huiyang Gou, Fuxing Yin, Gongkai Wang
Summary: This study demonstrates the great performance of ALD KTO anode in PICs, delivering superior specific capacity and rate capability as well as good capacity retention after 4,000 cycles. The close correlation of KTO to the underneath graphene nanosheets favors the electron transport and the interweaved structure facilitates the permeation of electrolyte ions, showing promising application of high performance K+ storage anode materials.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hai Qiu, Rintaro Ueji, Yuuji Kimura, Tadanobu Inoue
Summary: The study found that in polycrystalline plain low-carbon steel, grains are constrained by adjacent grains and exhibit grain-to-grain interactions in the elastic deformation region. The difference in inherent Young's modulus between grains is the main cause of grain-to-grain interaction, while the misorientation angle between grains has little effect on the interaction.
Article
Chemistry, Physical
Tadanobu Inoue, Yuuji Kimura
Summary: This paper investigates the methods to improve the balance of strength and toughness in steel materials, including delamination and grain refinement. Two different steel materials were prepared and tested. The results show that delamination is an effective method to enhance the low-temperature toughness of steel.
Article
Chemistry, Physical
Shulong Guo, Hui Yu, Zhifeng Wang, Wei Yu, Weili Cheng, Lixin Huang, Chunhai Liu, Fuxing Yin, Weimin Zhao, Chunling Qin
Summary: This study presents the microstructure and mechanical properties of pure aluminum fabricated by multi-pass caliber rolling. With increasing rolling passes, the temperature, stress, and strain gradually increased, while the maximum rolling force decreased. Dynamic recrystallization resulted in grain refinement and increased dislocation density. The texture of the material also changed during the rolling process.
Article
Geochemistry & Geophysics
Tadanobu Inoue, Shin-ichiro Oka, Koji Nakazato, Toru Hara
Summary: This study revealed the microstructural differences of tooth-like denticles in the coconut crab's claw. The denticles consist of a columnar structure and are covered with a thin epicuticle and an exocuticle with a twisted plywood pattern structure.
Article
Materials Science, Multidisciplinary
Zhenbo Liu, Fuxing Yin, Cuixin Chen, Lin Zhao, Lihua Fu, Yingkai Feng, Yang Cao, Yun Peng, Zhiling Tian, Changhai Li
Summary: Laser cladding was conducted using Cr7C3/Ni3Al alloyed powder and Cr3C2/Ni3Al mixed powder to prepare a Cr7C3 reinforced Ni3Al composite cladding layer. The microstructure and tribological properties of the cladding materials were studied, revealing that the alloyed powder cladding layer exhibited a microstructure mainly composed of Ni3Al, NiAl, and in-situ formed Cr7C3, while the mixed powder cladding layer contained Cr3C2. The alloyed powder cladding layer showed lower friction coefficient and wear loss compared to the mixed powder cladding layer, and was more friendly to its counterpart. The improved wear resistance of the alloyed powder cladding materials can be attributed to the homogeneous distribution of fine in-situ formed Cr7C3, effectively separating the friction pair.
Article
Materials Science, Multidisciplinary
Hui Yu, Junchao Ren, Shaoming Kang, Wei Yu, Zhifeng Wang, Jianhang Feng, Qingzhou Wang, Puguang Ji, Xin Zhang, Fuxing Yin
Summary: In this study, the high strain rate response of Mg-6wt%Er alloys with 1wt%Zn addition was investigated. It was found that the addition of Zn can enhance the strength of the alloy. The interaction between SFs and dislocations was analyzed, and it was observed that LAGBs can more easily transform into HAGBs at a high strain rate.
Article
Crystallography
Mingchao Dong, Zhuoyu Li, Baoxi Liu, Cuixin Chen, Wenxing Yu, Bo Yang, Fuxing Yin
Summary: Layered metal composites are increasingly important in aerospace, automotive, and nuclear energy, showing excellent strong-plastic matching effect. In this paper, the effect of hot rolling reduction on the mechanical properties and interfacial bonding strength of multilayer TWIP/40Si2CrMo steels is investigated. The results show that a higher hot rolling reduction improves the properties of the multilayer steels, reduces interfacial oxides, and changes the fracture mode. The study demonstrates the potential of multilayer steels for enhanced performance and uniform plastic deformation.
Article
Nanoscience & Nanotechnology
Jiwei Lv, Haoyang Yu, Wei Fang, Fuxing Yin, Daixiu Wei
Summary: This study investigates the influence of prestrain-induced dislocations on the formation of both coherent and incoherent precipitates in medium-entropy alloys (MEAs). The results show that prestrain increases the formation of incoherent precipitates and refines their size, while having little effect on the formation of coherent precipitates. By regulating the formation of precipitates, the room-temperature tensile properties of the alloy are improved.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Hai Qiu, Rintaro Ueji, Tadanobu Inoue
Summary: Luders deformation is a type of discontinuous yielding in ferrite-pearlite steel, characterized by the yield-point phenomenon and localized plastic bands. The correlation between the yield-point phenomenon and the formation of plastic bands is unclear. In this study, the global and local deformation behaviors in the tension processes of four ferrite-pearlite steels were examined to investigate this correlation. The main findings are: (1) the degree of yield drop decreased with an increase in the pearlite fraction, and (2) a plastic band was formed at a certain stress level smaller than the upper yield stress; when the stress level was larger than 92% of the upper yield stress, the upper yield point disappeared.
Article
Geochemistry & Geophysics
Tadanobu Inoue, Erina Kitahara, Yuka Hara, Koji Nakazato
Summary: The surface of the mud crab's claw has many bulges and tubes, which are closely related to the tissue structure of the exoskeleton. The exocuticles have heterogeneity, with high calcium concentration in the dense region and high phosphorus and magnesium concentration in the coarse region. The mechanical properties of the exocuticle are distributed and can be mapped using a nanoindentation test.
Article
Crystallography
Bo Yang, Zhuoyu Li, Kuanyuan Fan, Baoxi Liu, Wenxing Yu, Fuxing Yin
Summary: In this study, 18Mn/40Si2CrMo multilayer composite steels were successfully fabricated by vacuum hot rolling and warm rolling process. The effects of different warm rolling temperatures on the microstructure and mechanical properties were investigated. It was found that warm rolling process reduces the thickness of the interfacial diffusion layer, leading to improved interfacial bonding strength. The multilayer composite steel with a warm temperature of 500 degrees C achieved a balance of strength and plasticity.
Article
Materials Science, Multidisciplinary
Yufu Yan, Jiamin Zhao, Long Chen, Hongjian Zhao, Olga Klimova-Korsmik, Oleg V. Tolochko, Fuxing Yin, Puguang Ji, Shaoming Kang
Summary: This study investigates the quasi-static and dynamic compression properties of graphene-reinforced aluminium composites and finds that the addition of graphene improves their compressive stress resistance and energy absorption capacity. An aluminium-0.5 wt.% graphene composite exhibits good compressive properties due to the different interfacial wave impedance generated by the additional grain boundaries or Aluminium-Graphene interfaces.