First-principles determination of the effects of boron and sulfur on the ideal cleavage fracture inNi3Al

1996 ◽  
Vol 54 (5) ◽  
pp. 3074-3078 ◽  
Author(s):  
Sheng N. Sun ◽  
Nicholas Kioussis ◽  
Mikael Ciftan
Keyword(s):  
Cleavage Fracture ◽  
First Principles ◽  
The Ideal

scholarly journals First-Principles Determination Of The Effects Of Boron And Sulfur On The Ideal Cleavage Fracture In Ni3Al

1995 ◽  
Vol 409 ◽  
Author(s):  
Sheng N. Sun ◽  
Nicholas Kioussis ◽  
Mikael Ciftan ◽  
A. Gonis
Keyword(s):  
Cleavage Fracture ◽  
First Principles ◽  
Cleavage Plane ◽  
Full Potential ◽  
Fracture Properties ◽  
Electronic Mechanism ◽  
Strain Relationship ◽  
First Time ◽  
The Ideal

AbstractThe effects of boron and sulfur impurities on the ideal cleavage fracture properties of Ni3Al under tensile stress are investigated for the first time using the full-potential linearmuffin- tin-orbital (FLMTO) total-energy method, with a repeated slab arrangement of atoms simulating an isolated cleavage plane. Results for the stress-strain relationship, ideal cleavage energies, ideal yield stress and strains with and without impurities are presented, and the electronic mechanism underlying the contrasting effects of boron and sulfur impurities on the ideal cleavage of Ni3Al is elucidated.

First-principles study of the ideal cleavage fracture of Cr2Nb microalloyed by X (Al, Ni, Co, Ti)

2009 ◽  
Vol 17 (6) ◽  
pp. 394-399 ◽  
Author(s):  
Chenliang Li ◽  
Biao Wang ◽  
Yuanshi Li ◽  
Rui Wang
Keyword(s):  
Cleavage Fracture ◽  
First Principles ◽  
First Principles Study ◽  
The Ideal

Effects of X (V, W, Mo, Hf, Ta, Zr) additions on the ideal cleavage fracture of Cr2Nb: First-principles determination

2010 ◽  
Vol 18 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Chenliang Li ◽  
Jerlai Kuo ◽  
Biao Wang ◽  
Rui Wang
Keyword(s):  
Cleavage Fracture ◽  
First Principles ◽  
The Ideal

Metabolic response to temperature stress in the Colombian freshwater crab Neostrengeria macropa (H. Milne Edwards, 1853) (Decapoda: Brachyura: Pseudothelphusidae)

2021 ◽  
Author(s):  
David M Hudson
Keyword(s):  
Metabolic Response ◽  
Infrastructure Development ◽  
Predator Prey ◽  
Temperature Range ◽  
Indicator Group ◽  
Response To Temperature ◽  
Performance Results ◽  
The City ◽  
The Ideal

Abstract Freshwater crustaceans are distributed throughout the montane and lowland areas of Colombia, and are therefore a useful indicator group for how aquatic species will respond to climate change. As such, metabolic determination of physiological performance was evaluated for the Colombian pseudothelphusid crab, Neostrengeria macropa (H. Milne Edwards, 1853), over a temperature range inclusive of current temperatures and those predicted by future scenarios in the plateau around the city of Bogotá, namely from 8 °C to 30 °C. The performance results mostly aligned with previous exploratory behavioral determination of the ideal temperature range in the same species, although the metabolism increased at the highest temperature treatments, a point when exploratory behavior declined. These results indicate that this species of montane crab behaviorally compensates for increased thermal stress by decreasing its physical activity, which could have negative predator-prey consequences with changes to community structure as different species undergo climate-mediated geographic range shifts in the region. As this species is endemic to the plateau surrounding Bogotá, it also experiences a number of other stressors to its survival, including infrastructure development and invasive species.

Determination of spin-wave stiffness in the Fe-Si system using first-principles calculations

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
Matteo Rinaldi ◽  
Matous Mrovec ◽  
Manfred Fähnle ◽  
Ralf Drautz
Keyword(s):  
Spin Wave ◽  
First Principles ◽  
First Principles Calculations
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