Article
Nanoscience & Nanotechnology
L. M. Kang, Y. J. Cai, X. C. Luo, Z. J. Li, X. B. Liu, Z. Wang, Y. Y. Li, C. Yang
Summary: The study introduces a new methodology for preparing high-performance metallic alloys, and successfully demonstrates the exceptional mechanical properties of the Ti-6Al-4V alloy.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Manufacturing
N. L. Ofem
Summary: The study investigates the effect of using nickel as an alternative WC binder, pulsed electric current sintering (PECS), and minimum quantity lubrication (MQL) on the mechanical properties and performance characteristics during face milling of Ti-6Al-4 V. Mechanical properties assessed include hardness and fracture toughness of the cutting tool inserts, while performance characteristics examined include cutting forces, flank wear of the cutting tool inserts, and surface roughness of the machined Ti-6Al-4 V surfaces.
MATERIALS AND MANUFACTURING PROCESSES
(2021)
Article
Chemistry, Physical
Peng Yang, Weidong Zhang, Fulin Chen, Zhenggang Wu, Daixiu Wei, Xiaofeng Li
Summary: Ti/beta-Ti laminated composite is widely used in biomedical applications. Densification can be achieved at temperatures above 850 degrees C during fabrication by SPS. The sintering temperature significantly influences the interfacial characteristics, such as increasing the thickness of the interfacial layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yanfei Yin, Wenjuan Kou, Yongqing Zhao, Wangtu Huo, Weidong Zeng
Summary: The laminated Ti/Ti-50Nb composite, fabricated using spark plasma sintering, demonstrates a favorable combination of strength and ductility. The layered structure helps alleviate strain localization and maintains the total elongation of the composite equivalent to that of pure Ti. The tensile strength and stress-strain curves of the composite can be analyzed using the rule of mixture. Furthermore, microvoids initiate and grow at the interface, leading to the separation of the laminated structure into smaller units.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Oleg O. Shichalin, Vladimir N. Sakhnevich, Igor Yu Buravlev, Aleksey O. Lembikov, Anastasia A. Buravleva, Semen A. Azon, Sofia B. Yarusova, Sakhayana N. Danilova, Alexander N. Fedorets, Anton A. Belov, Evgeniy K. Papynov
Summary: The material based on the binary system Ti + Cu (50% atm) was studied, and intermetallic phases including CuTi2, TiCu, and Ti3Cu4 were obtained. The material exhibited good hardness, microhardness, and corrosion resistance, with the variation in hardness being attributed to the presence of pure metal agglomerates. Furthermore, the relationship between the temperature of spark plasma sintering and the material characteristics was revealed.
Article
Nanoscience & Nanotechnology
Joonas Lehtonen, Pauli Lehto, Yanling Ge, Aapo Juselius, Simo-Pekka Hannula
Summary: Pulsed electric current sintering of gas atomized powder can achieve an equiatomic CrFeNiMn alloy, with ball milling of the starting powder leading to increased density and hardness, as well as decreased grain size of the sintered material. The decrease in grain size suppresses deformation twinning and promotes dislocation cell formation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
O. O. Shichalin, I. Yu. Buravlev, E. K. Papynov, A. V. Golub, A. A. Belov, A. A. Buravleva, V. N. Sakhnevich, M. I. Dvornik, N. M. Vlasova, A. V. Gerasimenko, V. P. Reva, A. A. Yudakov
Summary: The paper introduces a method of fabricating tungsten carbide-based hard alloys and compares the characteristics of the obtained samples. By synthesizing the samples using spark plasma sintering (SPS) at different temperatures, the study investigates the effects on characteristics such as porosity. The results show that the volume content of WC decreases in alloys containing Ti and Cr after sintering, while it remains stable in alloys containing Co, Ni, and Fe.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Physical
Sebastien Germain Careau, Bernard Tougas, Elena Ulate-Kolitsky
Summary: The study explores the feasibility of using direct powder forging to process large spherical Ti-6Al-4V powder into wrought products with noteworthy properties. By consolidating prealloyed powder through a multi-step open-die forging and rolling process, the results show achieving higher mechanical properties than the F-23 grade requirements.
Article
Materials Science, Ceramics
V. L. Arantes, J. Sakihama, J. Vleugels
Summary: In this study, a Functionally Graded Material (FGM) with high hardness up to 25.1 GPa and good fracture toughness was successfully produced by using step graded Al2O3/NbC composites consolidated by Spark Plasma Sintering (SPS). The designed compositional gradient was maintained after sintering, resulting in fully dense crack-free graded bodies.
CERAMICS INTERNATIONAL
(2021)
Article
Crystallography
Abdulaziz Alhazaa, Hamad Albrithen, Mahmoud Hezam, Muhammad Ali Shar, Ibrahim Alhwaimel, Yasser Alharbi, Claude Estournes
Summary: Sheets of aluminum 7075 and titanium Ti-6Al-4V alloys were joined using spark plasma sintering. The joint region contained TiAl3, TiAl2, and Ti3Al intermetallic compounds, and the presence of copper foil hindered the formation of Al3Ti.
Article
Materials Science, Multidisciplinary
Yong Xue, Jishi Zhang, Haijun Liu, Zhaoming Yan, Hongyue Zhao, Jian Xu, Yaqing Yang, Qiang Wang, Zhimin Zhang
Summary: The study investigated the flow behaviors and microstructure changes of spark plasma-sintered Ti-6Al-4V alloy under various deformation conditions through multi-pass hot compression experiments. Features such as oscillatory phenomenon during deformation and the influence of deformed inhomogeneity were observed to affect the material properties.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Jingkun Li, Binguo Fu, Tianshun Dong, Guolu Li, Yanling Zhang, Yongyue Liu, Jiageng Liu
Summary: In this study, a Ti/SiC gradient material with Mg2Si additive was fabricated by reaction sintering. The structure, microstructure, and properties of the material were systematically investigated. The results showed that the Ti/SiC gradient material consisted of six layers with Ti-rich and Si-rich regions. The density, hardness, and fracture toughness varied with the Ti content, and the densification process was primarily controlled by pore displacement through lattice diffusion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Nasrin Heidari, Fatemeh Davar, Amir Alhaji
Summary: In this project, magnesia-alumina composite granules were prepared using the spray drying method and then sintered at temperatures of 1400 degrees C to 1500 degrees C by spark plasma sintering without using any sintering aids. The study focused on the effects of sintering temperature on the phase evolution, density, fracture toughness, and light transmission properties of the samples. Results showed that the sample sintered at 1400 degrees C had better transparency and higher density, hardness, and fracture toughness compared to the sample sintered at 1500 degrees C.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Stefan Csaki, Frantisek Lukac, Jakub Veverka, Tomas Chraska
Summary: Ti3SiC2 MAX phase material was successfully prepared using spark plasma sintering, and the effects of atmosphere, dwell time, and SiC grain size on the material properties were studied. The results showed that the maximum MAX phase content of 90 wt% was achieved at a sintering temperature of 1550°C, with low porosity and high hardness.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yuanmeng Wang, Ming Zhu, Longlong Dong, Guodong Sun, Wei Zhang, Hang Xue, Yongqing Fu, Ahmed Elmarakbi, Yusheng Zhang
Summary: Powder metallurgy methods are used to synthesize titanium matrix composites with exceptional mechanical properties. In this study, TiC/Ti-6Al-4V matrix composites were synthesized using a cost-effective and high-performance method and characterized. The addition of graphene nanoplates (GNPs) resulted in smaller grain size and improved mechanical properties of the composites. The strength of the composites was mainly attributed to grain refinement, precipitation of secondary phases, and dislocations strengthening. This work provides a new methodology for fabricating high-performance titanium matrix composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Industrial
Jacob J. Pope, Emma L. Calvert, Nicholas S. Weston, Martin Jackson
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2019)
Review
Materials Science, Multidisciplinary
N. S. Weston, B. Thomas, M. Jackson
MATERIALS SCIENCE AND TECHNOLOGY
(2019)
Editorial Material
Materials Science, Multidisciplinary
Nicholas S. Weston, Martin Jackson
Article
Materials Science, Multidisciplinary
Sarah A. Smythe, Ben M. Thomas, Martin Jackson
Article
Thermodynamics
Armin Salmasi, Simon J. Graham, Iain Galbraith, Alexander D. Graves, Martin Jackson, Susanne Norgren, Dikai Guan, Henrik Larsson, Lars Hoglund
Summary: The study focuses on optimizing the interaction mobility parameters of Ti and Fe in the BCC phase to address segregation issues caused by the addition of Fe to Ti. High-resolution Fe concentration profiles are obtained from Ti-Fe diffusion couples held at different temperatures, and ternary mobility interaction parameters are assessed and compared to previous evaluations.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2021)
Article
Chemistry, Physical
Oliver Levano Blanch, Daniel Suarez Fernandez, Alex Graves, Martin Jackson
Summary: Technological advancements in functionally graded multi-material manufacture have the potential to revolutionize the aerospace industry by providing tailored component design for improved performance. The study evaluated the challenges faced when machining billets consisting of multiple alloys, finding significant differences in machining response and surface damage depending on the alloy pairings and machining direction.
Article
Materials Science, Multidisciplinary
Alex Graves, Oliver Levano Blanch, Daniel Suarez Fernandez, Martin Jackson
Summary: The manufacturing of components with specific material properties in subcomponent regions is highly desired. Diffusion bonding titanium alloy powder using FAST has shown potential, but machining strategy needs to be better understood. This study investigates the drilling machinability of FAST diffusion bonded titanium alloys and highlights the importance of alloy chemistry and bond composition on surface quality and process stability.
Article
Engineering, Mechanical
Thomas Childerhouse, Rachid M'Saoubi, Luiz Franca, Nick Weston, Pete Crawforth, Martin Jackson
Summary: Accurate fatigue life predictions of titanium alloy components requires an understanding of how the machining affected metallurgical and micro-mechanical subsurface condition influences fatigue crack nucleation and growth. This study investigates the influence of surface integrity features generated during carbide and highspeed polycrystalline diamond machining on the fatigue behaviour of coarse and fine-grained Ti-6Al-4V. Mechanically induced compressive residual stresses, promoted by higher feed rates and the larger cutting edge radii of carbide tools, have been demonstrated to provide an overriding enhancing effect on fatigue life due to crack initiation suppression and reducing the deleterious effects of microstructural deformation and surface imperfections.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Thomas Childerhouse, Rachid M'Saoubi, Luiz F. P. Franca, Pete Crawforth, Martin Jackson
Summary: Polycrystalline diamond (PCD) is being developed as a new cutting tool material for titanium alloy machining. The high temperature hardness of PCD can improve productivity by enabling higher cutting speeds. This study examines the performance of different PCD tool grades in milling Ti-54M, and finds that smaller grain size offers better tool life due to superior fracture toughness. The study also compares the surface integrity of PCD and carbide machining, and shows that PCD results in lower microstructural damage and cutting forces.
Article
Chemistry, Multidisciplinary
B. Fernandez Silva, M. Jackson, K. Fox, B. P. Wynne
Summary: Microtexture heterogeneities, known as macrozones, are commonly found in titanium forgings due to thermomechanical processing, leading to reduced resistance to crack propagation. Efforts have been made to define and characterize macrozones, with the development of a computational tool using MATLAB for automatic macrozone identification based on a conservative approach. The tool allows for the detection of macrozones based on disorientation angle and density-fraction criteria, and has been successfully applied to various microstructures of titanium forgings.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Materials Science, Multidisciplinary
Beatriz Fernandez Silva, Oliver Levano Blanch, Kam Sagoo, Martin Jackson
Summary: Titanium alloys are important for armour designers due to their high ballistic mass efficiency. However, their high cost limits their use in military land-based vehicles. This study investigates the effect of different processing routes on the microstructure, texture, ballistic performance, and deformation modes of Ti-6Al-4V armour plate. The rolled plate exhibited the best performance due to a strong transverse-type texture perpendicular to the projectile direction.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Industrial
K. Marshall, P. Schillinger, N. S. Weston, M. Epler, M. Jackson
Summary: The use of Field Assisted Sintering Technology (FAST) for consolidating advanced Ni-based superalloy powders is investigated. The results show that FAST processed material has comparable density, hardness, and microstructure to materials prepared via hot isostatic pressing (HIP). FAST allows for the retention of particle grain morphology and has minimal effect on the final density of the consolidated material.
ADVANCES IN INDUSTRIAL AND MANUFACTURING ENGINEERING
(2022)