scholarly journals Prototypic Lightweight Alloy Design for Stellar‐Radiation Environments

2020 ◽  
Vol 7 (22) ◽  
pp. 2002397
Author(s):  
Matheus A. Tunes ◽  
Lukas Stemper ◽  
Graeme Greaves ◽  
Peter J. Uggowitzer ◽  
Stefan Pogatscher
Keyword(s):  
Alloy Design ◽  
Stellar Radiation

scholarly journals Metal Alloy Space Materials: Prototypic Lightweight Alloy Design for Stellar‐Radiation Environments (Adv. Sci. 22/2020)

2020 ◽  
Vol 7 (22) ◽  
pp. 2070126
Author(s):  
Matheus A. Tunes ◽  
Lukas Stemper ◽  
Graeme Greaves ◽  
Peter J. Uggowitzer ◽  
Stefan Pogatscher
Keyword(s):  
Alloy Design ◽  
Metal Alloy ◽  
Stellar Radiation

scholarly journals Griffith’s Legacy to Alloy Design and Beyond

JOM ◽  
2021 ◽  
Author(s):  
W. W. Gerberich ◽  
M. J. Cordill ◽  
J. W. Carter
Keyword(s):  
Alloy Design

scholarly journals Modelling H2 and its effects on star formation using a joint implementation of gadget-3 and KROME

2021 ◽  
Vol 504 (2) ◽  
pp. 2325-2345
Author(s):  
Emanuel Sillero ◽  
Patricia B Tissera ◽  
Diego G Lambas ◽  
Stefano Bovino ◽  
Dominik R Schleicher ◽  
...  
Keyword(s):  
Star Formation ◽  
Formation Rate ◽  
Physical Parameters ◽  
Density Profiles ◽  
Star Forming ◽  
Chemical Enrichment ◽  
Numerical Resolution ◽  
Stellar Radiation ◽  
Wide Range ◽  
The Impact

ABSTRACT We present p-gadget3-k, an updated version of gadget-3, that incorporates the chemistry package krome. p-gadget3-k follows the hydrodynamical and chemical evolution of cosmic structures, incorporating the chemistry and cooling of H2 and metal cooling in non-equilibrium. We performed different runs of the same ICs to assess the impact of various physical parameters and prescriptions, namely gas metallicity, molecular hydrogen formation on dust, star formation recipes including or not H2 dependence, and the effects of numerical resolution. We find that the characteristics of the simulated systems, both globally and at kpc-scales, are in good agreement with several observable properties of molecular gas in star-forming galaxies. The surface density profiles of star formation rate (SFR) and H2 are found to vary with the clumping factor and resolution. In agreement with previous results, the chemical enrichment of the gas component is found to be a key ingredient to model the formation and distribution of H2 as a function of gas density and temperature. A star formation algorithm that takes into account the H2 fraction together with a treatment for the local stellar radiation field improves the agreement with observed H2 abundances over a wide range of gas densities and with the molecular Kennicutt–Schmidt law, implying a more realistic modelling of the star formation process.

scholarly journals Refractory Metal (Nb) Intermetallic Composites, High Entropy Alloys, Complex Concentrated Alloys and the Alloy Design Methodology NICE—Mise-en-scène † Patterns of Thought and Progress

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 989
Author(s):  
Panos Tsakiropoulos
Keyword(s):  
Solid Solution ◽  
Refractory Metal ◽  
Design Methodology ◽  
Alloy Design ◽  
High Entropy Alloys ◽  
Laves Phases ◽  
High Entropy ◽  
High Temperature Materials ◽  
Mise En Scene ◽  
Intermetallic Composite

The paper reflects on the usefulness of the alloy design methodology NICE (Niobium Intermetallic Composite Elaboration) for the development of new Nb-containing metallic ultra-high-temperature materials (UHTMs), namely refractory metal (Nb) intermetallic composites (RM(Nb)ICs), refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs), in which the same phases can be present, specifically bcc solid solution(s), M5Si3 silicide(s) and Laves phases. The reasons why a new alloy design methodology was sought and the foundations on which NICE was built are discussed. It is shown that the alloying behavior of RM(Nb)ICs, RHEAs and RCCAs can be described by the same parameters. The practicality of parameter maps inspired by NICE for describing/understanding the alloying behavior and properties of alloys and their phases is demonstrated. It is described how NICE helps the alloy developer to understand better the alloys s/he develops and what s/he can do and predict (calculate) with NICE. The paper expands on RM(Nb)ICs, RHEAs and RCCAs with B, Ge or Sn, the addition of which and the presence of A15 compounds is recommended in RHEAs and RCCAs to achieve a balance of properties.

Stellar Radiation and the Nature of the Universe

Nature ◽  
1928 ◽  
Vol 121 (3053) ◽  
pp. 711-711
Author(s):  
OLIVER LODGE
Keyword(s):  
Stellar Radiation ◽  
The Universe

Alloy Design of MARBN for Boiler and Turbine Applications at 650 oC

2021 ◽  
pp. 1-16
Author(s):  
Fujio Abe ◽  
Masaaki Tabuchi ◽  
Susumu Tsukamoto
Keyword(s):  
Alloy Design
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