Article
Nanoscience & Nanotechnology
Y. Alshammari, Y. Alkindi, B. Manogar, F. Yang, L. Bolzoni
Summary: This study investigates the effects of lean additions of zirconium on the microstructure and properties of powder metallurgy Ti-Zr alloys. It is found that incremental addition of zirconium enhances the densification and hardness, but decreases the ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Y. Alkindi, Y. Alshammari, F. Yang, L. Bolzoni
Summary: In this study, Ti-Zr-Cu alloys were manufactured via powder metallurgy. It was found that the addition of Zr and Cu can decrease the compressibility, increase the relative sintered compact density, and change the microstructure of the alloys. With the increasing amount of Zr and Cu, the alloys become stronger but less ductile.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Takuma Teramae, Takayuki Tanaka, Mizuki Fukuo, Kazuki Shitara, Junko Umeda, Shufeng Li, Abdulaziz Alhazaa, Katsuyoshi Kondoh
Summary: Commercial pure Ti alloys are often used in biomedical applications, but they need to be strengthened by adding alloying elements. Ti-Fe alloys modified with Zr were investigated in this study to produce high-strength, ductile, and biocompatible alloys. The addition of Zr solid solution increased lattice constants and refined grain size, leading to improved mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ce Zhang, Fang Yang, Cunguang Chen, Zhimeng Guo
Summary: A fully protected process from Ti sponge to as-sintered materials was adopted to achieve low O/N content in the sintered materials. Fine ELI powder demonstrated excellent sinterability, and capsule-free HIP post-sintering was performed to achieve full density and obtain fine and near-equiaxed alpha grains.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Guigui Peng, Yilong Liang, Xianli Ren
Summary: The nano-Y2O3-reinforced ZK60 alloys were successfully prepared using powder metallurgy combined with hot-pressing sintering. The addition of nano-Y2O3 particles improves the microstructure, corrosion resistance, and mechanical properties of ZK60 alloys.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Dalibor Preisler, Michaela Janovska, Hanus Seiner, Lucie Bodnarova, Jitka Nejezchlebova, Martin Koller, Petr Sedlak, Petr Harcuba, Jozef Vesely, Jiri Kozlik, Tomas Chraska, Josef Strasky, Milos Janecek
Summary: Compositionally graded samples of Ti-xNb-7Zr-yO alloys with various chemical compositions were prepared and studied for potential biomedical use. The elastic constants of each sample were determined, showing a dependence on the volume fraction of niobium and oxygen. The lowest elastic modulus was observed near the stability limit between β matrix and α'' martensitic phase, while the presence of isothermal ω particles led to the highest elastic constants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Coatings & Films
Sergio dos Anjos, Fernando Henrique da Costa, Edwin Sallica-Leva, Rubens Caram, Vicente Amigo, Joao Batista Fogagnolo
Summary: Laser surface treatments can improve material properties in sintered parts. Preplaced powder laser alloying results in deeper fusion zones and higher alloy dilution. Modified layers have higher hardness than substrates, and different alloy elements affect surface layer elastic modulus differently.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Chemical
Shunyuan Xiao, Shaofu Li, Xuemeng Gan, Yafeng Yang
Summary: An electrostatic self-assembly strategy combining surface functional modification and solid-liquid fluidized bed powder coating treatment was proposed to synthesize a novel LaB6-coated Ti composite powder with excellent O-scavenging efficiency and high utilization rate. The as-sintered Ti samples with low LaB6 coating-content showed significantly improved tensile strength and elongation.
Article
Materials Science, Multidisciplinary
Huicong Li, Qi Cai, Shukui Li, Hanqing Xu
Summary: Through the preparation and investigation of the alloys, it was found that Ti-Nb-Mo-Ta alloys possess excellent mechanical properties, with the second-phase strengthening being the dominant mechanism for improving the mechanical properties of the alloys, which is of great significance for the preparation and application of the alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yu Pan, Jinshan Zhang, Jianzhuo Sun, Yanjun Liu, Ce Zhang, Rui Li, Fan Kuang, Xinxin Wu, Xin Lu
Summary: The challenge of producing high-ductility titanium materials using inexpensive high-oxygen HDH Ti powder is addressed by incorporating CaB6 oxygen-scavenger. The addition of CaB6 improves the tensile ductility and strength of Ti material by increasing deformation twining activity, grain refinement, and the formation of TiB and CaTiO3 reinforcements. This work provides an effective method for fabricating high-performance Ti material.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
M. Paul, Y. Alshammari, F. Yang, L. Bolzoni
Summary: This study investigates the processing and properties of Ti-Cu-Nb alloys obtained via powder metallurgy. The studied alloys have a lamellar microstructure, which is refined by the incremental addition of Cu+Nb and a eutectoid substructure is formed for sufficiently high contents of Cu. The resistance to plastic deformation increases monotonically due to the microstructural changes, while the ductility initially increases for small additions of Cu+Nb and subsequently decreases due to the impact of the residual pores.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
L. Bolzoni, F. Yang, M. Paul
Summary: In this study, the addition of cheap alloying elements (Cu and Fe) in Ti alloys was analyzed to produce low-cost ternary Ti-Cu-Fe alloys using powder metallurgy. The results showed that the compressibility of the powder blends decreased with the increase of alloying elements, but similar relative density values could still be achieved. The addition of Cu and Fe resulted in the formation of alloys with a lamellar microstructure, and the specific chemistry of the alloy determined the features of the microstructure and the deformation and failure mechanisms of the sintered ternary Ti-xCu-xFe alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
L. Romero-Resendiz, P. Gomez-Saez, A. Vicente-Escuder, V Amigo-Borras
Summary: Significant progress has been made in the properties and chemical composition of Ti alloys, but the impact of porosity and indium content on biocompatibility and corrosion behavior is not fully understood. This study showed that indium acted as a grain refiner in Ti alloys, reducing porosity and improving mechanical behavior. Among the Ti-In alloys evaluated, the Ti-10In alloy demonstrated the most favorable properties for dental implant applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
M. Paul, F. Yang, L. Bolzoni
Summary: This study investigated the addition of eutectoid (iron) and isomorphous (niobium) beta stabilisers to create ternary alpha + beta titanium alloys, which is a gap in the existing literature focused on metastable or stable beta Ti-Fe-Nb alloys. The incremental addition of iron and niobium improves the density, reduces compressibility, enhances densification, and refines the microstructure of the alloys. The resulting sintered Ti-Fe-Nb alloys exhibit increased load bearing capability and comparable mechanical properties to heavily alloyed cast Ti-Fe-Nb alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Biomedical
Taomei Zhang, Pinghua Ou, Jianming Ruan, Hailin Yang
Summary: Niobium (Nb), Titanium (Ti), and Zirconium (Zr) are materials attracting attention for implants due to their excellent properties. A ternary alloy of 50 wt.%Nb-30wt.%Ti-Zr showed lower Vickers hardness, elastic modulus, and promoted cell proliferation and adhesion of MG-63 cells. This alloy may be a promising candidate for bone implant material.
JOURNAL OF BIOMATERIALS APPLICATIONS
(2021)
Article
Development Studies
Bin Liu, Huajian Fang, Xiaosheng Qin, Feilian Zhang, Jingjing Li
Summary: An integrated multi-criteria analysis framework is proposed for sustainable water management of built reservoirs with dam-heightening-based decision. The study shows that this framework can effectively handle the decision-making problem of reservoir construction schemes and identifies subjective weighting factors. Game theory is found to be superior to traditional methods in integrating collective wisdom and objective indicators. This study is of significant reference value for the feasibility demonstration of reservoirs with water transferring tasks worldwide.
SUSTAINABLE DEVELOPMENT
(2023)
Article
Materials Science, Multidisciplinary
Bingqiang Wei, Wenqian Wu, Mingyu Gong, Shuwei Yu, Song Ni, Min Song, Jian Wang
Summary: Deformation twinning is crucial in determining the mechanical behavior of hexagonal metals. Lowering the energy of basal stacking faults can promote the formation of basal stacking faults and face centred cubic phase, which affects the propagation and growth of deformation twins. This study provides insights into the influence of lowering basal stacking faults energy on twinning behaviors in hexagonal metals.
Article
Nanoscience & Nanotechnology
Li Wang, Xiaopeng Liang, Bin Liu, Michael Oehring, Jonathan Paul, Jie Liu, Min Song, Florian Pyczak, Yong Liu
Summary: The interaction between dislocations and perovskite Ti3AlC precipitates in a titanium alloy was investigated. It was found that the Ti3AlC carbides can be sheared by dislocations, leading to the formation of stacking faults and crossed stacking fault configurations. These stacking faults are induced by the shear of Shockley partial dislocations and further extended along specific crystal planes.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Shenghan Gao, Ao Fu, Zhonghao Xie, Tao Liao, Yuankui Cao, Bin Liu
Summary: High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared using the methods of electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP). Both methods produced powders with a single-phase body-centered cubic (BCC) structure and low oxygen content. The PREPed powders exhibited higher sphericity and smoother surface, but larger particle size compared to the EIGAed powders.
Article
Engineering, Chemical
Shikun Li, Bin Liu, Xiao Jia, Min Xu, Ruoyu Zong, Xunfeng Li, Guohua Liu, Xiulan Huai
Summary: Understanding the relationship between the physical properties of composite components and thermal conductivity is crucial for improving overall heat-dissipation performance. A numerical simulation was conducted to investigate the anisotropic thermal conductivity and heat flux distributions of h-BN/nanofiber composite films. Factors such as the intrinsic thermal conductivity of the matrix and filler, filler geometry and orientation, and interface thermal resistance were considered. The study found that increasing the intrinsic thermal conductivity of the matrix and tuning the interface thermal resistance could enhance the thermal conductivity, while the contributions from increasing filler conductivity and length were limited.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hui Wang, Longhao Cao, Mengmeng Wang, Bin Liu, Longping Deng, Guohua Li, Ya-Jun Cheng, Jie Gao, Yonggao Xia
Summary: A process to recycle valuable metals from spent lithium-ion batteries (LIBs) by separating aluminum foil and cathode material is proposed. The separated aluminum foil is used as a reducing agent to generate high-purity Ni-Co-Mn nanopowders. The process achieves high recovery efficiencies of Li, Ni, Co, and Mn and transforms waste aluminum into a high-value-added reductant, greatly reducing costs and making the process green.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Longjun Li, Li Wang, Zhida Liang, Junyang He, Min Song
Summary: The formation of various types of oxide scales on the surface and along the grain boundaries of a complex CoNi-based superalloy was investigated at 900 degrees C. A complex multilayered oxide scale was formed under steady-state conditions (oxidation time up to 24 hours). After the breakdown of the steady-state oxide scale (oxidation for 48 hours), different types of oxide scales occurred. It was also observed that oxidation gradually extended into the specimen interior along the grain boundaries, caused by selective oxidation of elements due to differences in equilibrium oxygen partial pressures. Local microstructure and oxygen concentration were found to significantly influence the formation and configuration of the oxide scales in the investigated alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Letter
Materials Science, Multidisciplinary
Hao Zhang, Bingqiang Wei, Xiaoqin Ou, Song Ni, Xiaozhou Liao, Min Song
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Fang Ding, Yuankui Cao, Ao Fu, Jian Wang, Weidong Zhang, Jingwen Qiu, Bin Liu
Summary: The microstructural evolution and mechanical behavior of FeCrNi medium entropy alloy (MEA) with different Si content were investigated in this study. It was found that the precipitation of fine s particles can be formed in situ by thermomechanical treatment of Si doping FeCrNi MEAs. FeCrNiSi0.15 MEA exhibits a good combination of strength and ductility, with yield strength and tensile elongation of 1050 MPa and 7.84%, respectively. The strength enhancement is mainly attributed to the grain-boundary strengthening and precipitation strengthening caused by fine s particles.
Article
Materials Science, Multidisciplinary
Yang Yang, Xiaoqin Ou, Hao Zhang, Min Song
Summary: Carbon plays a crucial role in enhancing the mechanical properties of steels as a principal alloying element. This study investigates the interstitial sites for carbon atoms during deformation-induced phase transformations in Fe-C alloys through molecular dynamics simulations, providing insights into the microstructural evolution at the atomic scale. The distribution and arrangement of carbon atoms in the Fe lattice affect the formation of stacking faults and the pinning effects on dislocation movement.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yangbo Yu, Hongge Yan, Huaming Zhu, Jihua Chen, Weijun Xia, Youping Sun, Bin Su, Yifu Deng, Min Song
Summary: This study investigates the DRX behavior, grain structure, and texture evolution of bimodal TC17 alloy during high strain rate hot compression at 840°C and 900°C. The results show that the lamellar alpha s has almost no impact on the DRX of the beta phase due to dynamic transformation. The formation of dense LAGB cells in the beta phase is influenced by the decomposition of alpha p and the strain level.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jingli Liu, Han Li, Bin Liu, Luling Wang, Jianqiu Zhou, Feng Zhang
Summary: The effect of grain boundary stability on the properties of Cu-Ni nanocrystalline alloy was investigated by molecular dynamics simulations. It was found that a more stable grain boundary leads to a higher energy barrier for deformation mechanisms and requires more force to hinder atomic slip in the grain boundary. The material reaches its highest strength when the homogeneous segregation degree of nanograined metals is about 0.9. Additionally, the binding energy between dislocations and grain boundaries was studied comprehensively and deeply for the first time using molecular dynamics simulation.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhonghao Xie, Ao Fu, Heng Duan, Bingfeng Wang, Xiaofeng Li, Yuankui Cao, Bin Liu
Summary: A single-phase FeCrNi medium-entropy alloy with a face-centered cubic structure was successfully fabricated by selected laser melting. The alloy exhibits hierarchical microstructures and shows an excellent strength-ductility combination. At 77 K, the alloy achieves ultra-high yield strength and ultimate tensile strength, while still maintaining a high fracture elongation. Moreover, the alloy deformed at 77 K produces more nanotwins, enhancing its twinning-induced plasticity effects and contributing to its high plasticity.
Article
Materials Science, Multidisciplinary
Changchang Liu, Ji Gu, Min Song
Summary: This study investigates the hot rolling treatment and water quenching process on a TC18 titanium alloy, revealing the formation of a new phase induced by stress and assisted by another phase. The existence of a new phase and diffuse streaks during hot working were also observed. The research confirms the presence of dynamic recrystallization (DRX), with recrystallization grains nucleating preferentially at high-energy areas such as grain boundaries and shear bands. The elongation decreases and tensile strength increases with increasing deformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yangbo Yu, Hongge Yan, Huaming Zhu, Jihua Chen, Weijun Xia, Chang Xu, Min Song
Summary: Modified alpha precipitation based on severely deformed beta phase and optimized aging treatments is crucial for strengthening titanium alloys. This study investigated the beta phase features of high strain rate hot compressed TC17 alloy and the precipitation behavior of alpha phase during single-step and duplex aging. The results showed that high strain rate hot compression significantly promoted the nucleation and growth of alpha phase, and duplex aging was more beneficial for refining alpha precipitates.
MATERIALS TODAY COMMUNICATIONS
(2023)
