Article
Nuclear Science & Technology
Felix Klein, Andrey Litnovsky, Xiaoyue Tan, Jesus Gonzalez-Julian, Marcin Rasinski, Christian Linsmeier, Martin Bram, Jan Willem Coenen
Summary: This article highlights the importance of tungsten alloy as the baseline first-wall armor material for a future DEMOnstration power plant and discusses its performance in terms of safety, oxidation suppression, and hardness. Moreover, initial success in joining smart alloys to EUROFER using FAST technology is presented.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Chemistry, Physical
Chun-Liang Chen, Sutrisna
Summary: The study found that the binder phase of NiFeCoCr medium entropy alloy dispersed in W-Mo heavy tungsten alloy has a single FCC solid solution structure, and a lower Cr content encourages the dissolution of Cr into the tungsten matrix; as the sintering temperature increased to 1450 degrees C, liquid phase sintering became dominant in the model alloys, resulting in a decrease in hardness.
Article
Materials Science, Multidisciplinary
Fuqiang Shen, Laihao Yu, Tao Fu, Yingyi Zhang, Hong Wang, Kunkun Cui, Jie Wang, Shahid Hussain, Naseem Akhtar
Summary: This study summarizes the effects of Al, Cr, B elements addition on the mechanical properties and oxidation resistance of niobium-silicon ternary alloys, analyzes and compares the microstructure, oxidation behavior and mechanical properties of various alloys, and summarizes the fracture and oxidation failure mechanisms of the alloys. Additionally, it provides a prospect for the future development trend of ternary Nb-Si based oxidation-resistant alloys.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Tianxing Lu, Cunguang Chen, Pei Li, Chenzeng Zhang, Weihao Han, Yang Zhou, Challapalli Suryanarayana, Zhimeng Guo
Summary: A novel dispersion-strengthened copper-tungsten alloy was prepared by mechanical alloying, showing improved mechanical properties, electrical conductivity, and thermal stability. The cold-rolled Cu-5 vol% W alloy retains high tensile strength and reasonable ductility even after annealing at 800 degrees C.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Chun-Liang Chen, Sutrisna
Summary: In this study, the Co9Al8W superalloy was used as a binder phase for a new tungsten heavy alloy (WHA). The effects of the binder phase, nano-Y2O3 oxides, and mechanical alloying on the microstructure evolution and mechanical properties of the model WHAs were investigated. The presence of the Co9Al8W binder phase stabilized the formation of solid phase during sintering. The interaction between dispersed oxide particles and the Al element resulted in the formation of complex nanoscale Al-Y-O oxides, which refined the microstructure and significantly influenced the mechanical properties of the alloys. However, the alloys exhibited a porous microstructure due to the presence of Al-rich oxides and pores, leading to the formation of micro-cracks and reduced material ductility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hana Thurlova, Filip Prusa
Summary: Substituting part of Mn with Al in equiatomic CoCrFeNiMn alloy can enhance the hardness and strength of the alloy, with the most promising mechanical properties observed in the CoCrFeNiMn5Al15 alloy. All prepared alloys showed good thermal stability, with higher Al content leading to better resistance against high-temperature oxidation.
Article
Materials Science, Multidisciplinary
Vadla Suman, R. S. Maurya, M. Debata, D. Chaira
Summary: The present research focuses on the fabrication of nano-scale yttria dispersed pure W and its alloys using mechanical alloying and subsequent sintering. The addition of Si leads to a reduction in particle size, while the addition of Ni and Co prevents the formation of intermetallic compounds. After sintering, different intermetallic compounds and oxide phases are observed in different alloys.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Tao Fu, Kunkun Cui, Yingyi Zhang, Jie Wang, Fuqiang Shen, Laihao Yu, Junmao Qie, Xu Zhang
Summary: Tungsten, as the most prominent plasma-oriented material in nuclear fusion reactors, suffers from poor oxidation resistance at high temperatures. Scholars have suggested that self-passivating tungsten alloy and surface protection technology are effective ways to address this issue. Studies on various alloys and coatings for oxidation protection of tungsten have been reviewed, with analysis on their microstructure, oxidation behavior, and failure mechanism. Future development direction and trend in oxidation protection of W-based materials are also discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Halit Subutay, Ilyas Savkliyildiz
Summary: By investigating the ball-milling mechanism in the Mg-6Sn-1Na ternary materials system, a suitable mechanical alloying method was found. Different structures were observed during the milling process, ultimately resulting in samples with homogeneously distributed smaller particles, which exhibited the highest density, modulus of elasticity, and hardness values.
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
Nuclear Science & Technology
P. Perez, M. A. Monge
Summary: The oxidation resistance of pure tungsten can be improved by adding titanium, which reduces mass gain and suppresses catastrophic oxidation at high temperatures, as well as prevents microcracking in the oxide layer and the formation of non-protective multilayered structures.
NUCLEAR MATERIALS AND ENERGY
(2022)
Review
Materials Science, Multidisciplinary
Kunming Pan, Yanping Yang, Shizhong Wei, Honghui Wu, Zhili Dong, Yuan Wu, Shuize Wang, Laiqi Zhang, Junping Lin, Xinping Mao
Summary: Continuous exploration of high-temperature structural materials is driven by the needs of gas-turbine engines, with Mo-Si-B alloys as a new generation ultrahigh-temperature structural material, but oxidation remains a concern.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yao Wang, Yufeng Huang, Wensheng Liu, Baishan Chen, Jiayi Liu, Lei Zhang, Peiyuan Fan, Yunzhu Ma
Summary: The addition of Ta or Re alone can improve the performance of tungsten alloys, but the combined addition of Ta and Re results in complex diffusion behavior and the formation of new phases. W-Ta-Re-Ni-Fe alloys with different Re contents were prepared using two methods, and the compositions and structures of the precipitated phase were analyzed. The addition of Re refined the grain size and mechanical alloying strengthened the W particles, while the reaction of Ta and Ni resulted in the generation of a reinforced phase.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Sergio Gonzaga, Arturo Molina, Rene Guardian, Horacio Martinez, Edna Vazquez Velez, Jesus Santa-Olalla Tapia
Summary: Ternary Mg-Zn-Ca alloys were manufactured using mechanical alloying for potential biomedical applications. The effect of milling time, degradation in synthetic human fluids, and cytotoxicity were studied. The alloys showed improved corrosion resistance compared to pure Mg and exhibited no cytotoxicity towards human fibroblast cells. Mg65-Zn30-Ca5 and Mg70-Zn25-Ca5 alloys have good potential for biomedical applications.
Article
Materials Science, Multidisciplinary
Shuhei Nogami, Itsuki Ozawa, Daisuke Asami, Naoya Matsuta, Seiji Nakabayashi, Siegfried Baumgaertner, Philipp Lied, Kiyohiro Yabuuchi, Takeshi Miyazawa, Yuta Kikuchi, Marius Wirtz, Michael Rieth, Akira Hasegawa
Summary: The addition of tantalum to tungsten-tantalum alloys improves their mechanical properties, resistance against recrystallization, and resistance to high heat flux exposure. This makes them a promising material for fusion reactor applications.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
E. Gil, N. Ordas, C. Garcia-Rosales, I. Iturriza
Article
Nuclear Science & Technology
Aida Calvo, Carmen Garcla-Rosales, Nerea Ordas, Inigo Iturriza, Karsten Schlueter, Freimut Koch, Gerald Pintsuk, Elena Tejado, Jose Ygnacio Pastor
FUSION ENGINEERING AND DESIGN
(2017)
Article
Nuclear Science & Technology
Nerea Ordas, Fernando Samaniego, Inigo Iturriza, Amaia Gomez, Cristina Escudero, Ana Isabel Fernandez-Calvo, Ignacio Cobo, Stefano Banetta, Samuli Heikkinen, Tindaro Cicero
FUSION ENGINEERING AND DESIGN
(2017)
Article
Physics, Fluids & Plasmas
A. Litnovsky, T. Wegener, F. Klein, Ch. Linsmeier, M. Rasinski, A. Kreter, B. Unterberg, J. W. Coenen, H. Du, J. Mayer, C. Garcia-Rosales, A. Calvo, N. Ordas
Article
Chemistry, Physical
E. Gil, J. Cortes, I. Iturriza, N. Ordas
APPLIED SURFACE SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
J. Aldazabal, C. Garcia-Rosales, A. Martin Meizoso, N. Ordas, F. Sordo, J. L. Martinez, J. Gil Sevillano
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
A. Calvo, K. Schlueter, E. Tejado, G. Pintsuk, N. Ordas, I. Iturriza, R. Neu, J. Y. Pastor, C. Garcia-Rosales
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Nerea Ordas, Emma Gil, Arturs Cintins, Vanessa de Castro, Teresa Leguey, Inigo Iturriza, Juris Purans, Andris Anspoks, Alexei Kuzmin, Alexandr Kalinko
JOURNAL OF NUCLEAR MATERIALS
(2018)
Article
Nuclear Science & Technology
David Pazos, Marta Suarez, Adolfo Fernandez, Pilar Fernandez, Inigo Iturriza, Nerea Ordas
FUSION ENGINEERING AND DESIGN
(2019)
Article
Materials Science, Multidisciplinary
V Mihalache, M. Walter, I Mercioniu, N. Ordas
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Chemistry, Physical
P. Lopez-Ruiz, M. B. Garcia-Blanco, G. Vara, I Fernandez-Pariente, M. Guagliano, S. Bagherifard
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Nerea Ordas, Luis Portoles, Maria Azpeleta, Amaia Gomez, Jose Ramon Blasco, Mario Martinez, Julia Urena, Inigo Iturriza
Summary: The precipitation hardened CuCrZr alloy is considered the baseline option for heat sink material in the water cooled W divertor concept of DEMO due to its high thermal conductivity and strength. Additive Manufacturing technology allows for the creation of innovative solutions with complex structures for heat exchangers and heat sinks, and EB-PBF shows advantages in processing copper alloys by avoiding difficulties associated with high thermal conductivity and reflectivity of copper-based materials.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Nuclear Science & Technology
H. Maier, T. Schwarz-Selinger, R. Neu, C. Garcia-Rosales, M. Balden, A. Calvo, T. Duerbeck, A. Manhard, N. Ordas, T. F. Silva
NUCLEAR MATERIALS AND ENERGY
(2019)
Article
Nuclear Science & Technology
David Pazos, Arturs Cintins, Vanessa de Castro, Pilar Fernandez, Jan Hoffmann, Wilfredo Garcia Vargas, Teresa Leguey, Juris Purans, Andris Anspoks, Alexei Kuzmin, Iffigo Iturriza, Nerea Ordas
NUCLEAR MATERIALS AND ENERGY
(2018)
Article
Nuclear Science & Technology
A. Litnovsky, T. Wegener, F. Klein, Ch. Linsmeier, M. Rasinski, A. Kreter, B. Unterberg, M. Vogel, S. Kraus, U. Breuer, C. Garcia-Rosales, A. Calvo, N. Ordas
NUCLEAR MATERIALS AND ENERGY
(2017)
