Results 61 to 70 of about 867 (170)

Machine learning in nondestructive estimation of neutron-induced reactor pressure vessel embrittlement [PDF]

open access: yes, 2021
Several nuclear power plants in the European Union are approaching the ends of their originally planned lifetimes. Extensions to the lifetimes are made to secure the supply of nuclear power in the coming decades.
Grönroos, Sonja
core  

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

open access: yesAdvanced 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   +9 more
wiley   +1 more source

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

open access: yesEngineering 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   +5 more
wiley   +1 more source

Strength and toughness tradeoffs for an ultrafine-grain size ferrite/cementite steel produced by warm-rolling and annealing

open access: yes, 2011
For an ultrafine grain ferrite/cementite (UGF/C) steel, the Charpy impact energy was measured at temperatures from 373. K to 4.2. K, and tensile tests were carried out at temperatures between 323. K and 77. K.
Zhao, Ying-Chao   +11 more
core   +1 more source

Influence of preheating on tungsten damage under pulsed hydrogen plasma exposure

open access: yesNuclear 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   +4 more
doaj   +1 more source

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

open access: yesAdvanced 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   +2 more
wiley   +1 more source

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

open access: yesAdvanced 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   +6 more
wiley   +1 more source

On the determination of the ductile to brittle transition temperature from small punch tests on Grade 91 ferritic-martensitic steel

open access: yes, 2017
The exposure of structural materials to the environment in nuclear power plants leads to aging through thermal and/or irradiation effects. One of the consequences of this aging is the shift of the ductile to brittle transition temperature (DBTT) towards ...
HOLMSTROM Bjorn   +7 more
core   +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

open access: yesJournal 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   +4 more
doaj   +1 more source

Recent Improvements in Size Effects Correlations for DBTT and USE of Ferritic Steels

open access: yes, 1993
Currently available correlations for the effects of specimen size on the USE were developed for relatively ductile steels and will not serve as well when the steels become embrittled.
Garner, F. A.   +3 more
core  

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