Results 51 to 60 of about 340 (167)

Recent Improvements in Size Effects Correlations for DBTT and Upper Shelf Energy of Ferritic Steels [PDF]

, 1993
Currently available correlations for the effects of specimen size on the upper shelf energy (USE) were developed for relatively ductile steels and do not serve as well when the steels become embrittled. Size effects correlations were developed recently for the impact properties of less ductile HT9 to be applied to other initially more ductile steels as
Kumar, A. S., Louden, B. S., Garner, F. A., Hamilton, M. L.   +3 more
openaire   +1 more source

High Radiation Resistance in the Binary W‐Ta System Through Small V Additions: A New Paradigm for Nuclear Fusion Materials

Advanced Science, Volume 12, Issue 20, May 29, 2025.
Refractory high‐entropy alloys exhibit superior radiation tolerance, but face fabrication challenges due to complex compositions. It is demonstrated that reducing the number of alloying elements does not compromise radiation resistance in a novel W‐Ta‐V highly‐concentrated refractory alloy.
Matheus A. Tunes, Darren Parkison, Bochuan Sun, Patrick Willenshofer, Sebastian Samberger, Christoph Frühwirth, Shalini Tripathi, Benjamin K. Derby, Jon Kevin S. Baldwin, Saryu J. Fensin, Damian Sobieraj, Jan S. Wróbel, Jesper Byggmästar, Stefan Pogatscher, Enrique Martinez, Duc Nguyen‐Manh, Osman El‐Atwani   +16 more
wiley   +1 more source

Heat Treatment Effects on Microstructures and DBTT of F82H Steel Doped with Boron and Nitrogen

MATERIALS TRANSACTIONS, 2005
Effects of doping with 60 ppm B and/or 200 ppm N and heat treatments on the microstructures and the ductile-brittle transition temperature (DBTT) have been studied for ferritic/martensitic steel F82H. Prior austenitic grain size of standard F82H decreased from about 120 to 30 μm and also the DBTT decreased by about 50°C when the normalizing ...
Okubo, Nariaki, Wakai, Eiichi, Matsukawa, Shingo, Furuya, Kazuyuki, Tanigawa, Hiroyasu, Jitsukawa, Shiro   +5 more
openaire   +2 more sources

Heterostructured Metallic Structural Materials: Research Methods, Properties, and Future Perspectives

Advanced Functional Materials, Volume 34, Issue 51, December 16, 2024.
Heterostructured materials (HSMs) are becoming an emerging strategy for superior mechanical properties of metallic materials. Comprehensive evidence is necessary to substantiate their feasibility. This study provides an extensive review of experimental results from worldwide research groups across titanium, magnesium, aluminum, copper, steel, and ...
Xinxin Dong, Bo Gao, Lirong Xiao, Jiajun Hu, Mengning Xu, Zongyao Li, Jiaqi Meng, Xiaodong Han, Hao Zhou, Yuntian Zhu   +9 more
wiley   +1 more source

Orientation‐dependent mechanical responses in molybdenum‐rhenium alloys evaluated via micro‐pillars

Engineering Reports, Volume 6, Issue 10, October 2024.
Orientation‐dependent compressive properties are found in Mo‐14Re and Mo‐42Re, but are not found in Mo and Mo‐5Re, which may be attributed to activated multi‐slip planes as increased Re. Solid solution effect of Re not only rely on orientations, but also on Re content. Softening effect occurs in both [100] and [110] Mo‐5Re.
Hailong Xu, Li Huang, Wen Zhang, Jing Liang, Xuanqiao Gao, Jianfeng Li   +5 more
wiley   +1 more source

The Influence of Mo Content and Annealing on the Oxidation Behavior of Arc‐Melted Cr–xMo–8Si Alloys

Advanced Engineering Materials, Volume 26, Issue 17, September 2024.
Cr–xMo–8Si alloys (x = 10, 20, and 25 at%) show high potential for a new class of lightweight refractory alloys for high‐temperature applications. Especially worthwhile of further development is the Cr–25Mo–8Si alloy with extremely low mass gain and continuous SiO2 subscale formation, preventing internal oxidation.
Lisa Koliotassis, Emma M. H. White, Mathias C. Galetz   +2 more
wiley   +1 more source

Influence of preheating on tungsten damage under pulsed hydrogen plasma exposure

Nuclear Materials and Energy
Preheated tungsten plate behavior under multiple pulsed hydrogen plasma irradiations in the PW-7 plasma accelerator was investigated. The preheating temperature was 973 K, which is above the ductile to brittle transition temperature (DBTT ≈ 673 K).
A.B. Tazhen, M.K. Dosbolayev, A.N. Kholmirzayev, Y.A. Ussenov, T.S. Ramazanov   +4 more
doaj   +1 more source

Crack‐Free Tungsten Fabricated via Laser Powder Bed Fusion Additive Manufacturing

Advanced Functional Materials, Volume 34, Issue 12, March 18, 2024.
Additive manufacturing of tungsten (W) is challenging due to its high melting point, and brittleness from GB oxides. In this study, the processing of W through laser powder bed fusion is investigated. Parts are fabricated under argon (Ar) and nitrogen (N2).
Tejas Ramakrishnan, Amit Kumar, Tumulu S. Kumar, Sunyong Kwon, Jose A. Muniz‐Lerma, Raynald Gauvin, Mathieu Brochu   +6 more
wiley   +1 more source

New insights from crystallography into the effect of Ni content on ductile-brittle transition temperature of 1000 MPa grade high-strength low-alloy steel

Journal of Materials Research and Technology
The significant effect of Ni content (0.92, 1.94 and 2.94 wt%) on ductile-brittle transition temperature (DBTT) and microstructure in a 1000 MPa grade high-strength low-alloy (HSLA) steel was studied.
Zeqing Ni, Jingxiao Zhao, Xuelin Wang, Chengjia Shang, Wenhao Zhou   +4 more
doaj   +1 more source

Enhanced thermal-mechanical properties of rolled tungsten bulk material reinforced by in situ nanosized Y–Zr–O particles

Nuclear Engineering and Technology
Tungsten is the most promising plasma facing material for fusion reactors. Rolled W–Y2(Zr)O3 bulk material has been successfully produced in this study for future fusion engineering applications.
Gang Yao, Hong-Yu Chen, Lai-Ma Luo, Xiang Zan, Yu-Cheng Wu   +4 more
doaj   +1 more source