Results 61 to 70 of about 761 (201)

Cross-Sectional and Plan-View Observation of Cracks Introduced in Si at the Ductile-Brittle Transition Temperature

open access: yes, 1998
Mode I cracks introduced in Si at the ductile-brittle transition temperature (DBTT) have been examined extensively using transmission electron microscopy.
null Suprijadi, H. Saka
core   +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

Irradiation effect on impact fracture behavior of A508-3 steel in ductile-to-brittle transition range

open access: yes, 2019
The mechanical performance of reactor pressure vessel (RPV) materials is an important factor in determining the safety and economics of the operation of a nuclear power plant.
Berto, Filippo   +6 more
core   +2 more sources

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

Effect of alloying elements on ductile-to-brittle transition behavior of high-interstitial-alloyed 18Cr-10Mn austenitic steels

open access: yes, 2011
A study has been made on the effect of alloying elements on ductile-to-brittle transition (DBT) behavior of high-interstitial-alloyed 18Cr-10Mn austenitic steels containing similar amount of N + C.
B. Hwang   +5 more
core   +1 more source

DBTT Reduction Enabled by SiO2-Bearing Flux in Submerged Arc Welds

open access: yesWelding Journal
The ductile-brittle transition temperature (DBTT) plays a critical role in determining the integrity of welded structures under common low-temperature service conditions. Fluxes are proven effective agents that significantly alter weld compositions and resulting microstructures.
CHAO HAN   +4 more
openaire   +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   +3 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

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

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