Results 51 to 60 of about 340 (168)
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 +5 more
openaire +2 more sources
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 +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 +2 more
wiley +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 +6 more
wiley +1 more source
Influence of preheating on tungsten damage under pulsed hydrogen plasma exposure
Nuclear Materials and EnergyPreheated 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
Journal of Materials Research and TechnologyThe 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
Nuclear Engineering and TechnologyTungsten 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 +4 more
doaj +1 more source
Metals, 2019 This study investigated the microstructural stability and mechanical properties exhibited by China low activation martensitic (CLAM) steels with different yttrium (Y) contents over 3000 h of aging at 550 °C.
Guoxing Qiu +6 more
doaj +1 more source
Nuclear Materials and EnergyENEA and its industrial partner Rina Consulting-CSM (RINA CSM) contribute to the Eurofusion programme in the development of innovative RAFM steels able to withstand the critical low temperature (280-300 °C in the “water-cooling” option) foreseen for the ...
C. Cristalli +4 more
doaj +1 more source
High Temperature Materials and ProcessesThe inherent low-temperature brittleness has restricted the application of tungsten materials. One option for enhancing the tungsten fracture toughness is to use tungsten-based layered composites.
Liu Rui +4 more
doaj +1 more source