A Reduction in Particle Size Generally Causes Body-Centered-Cubic Metals to Expand but Face-Centered-Cubic Metals to Contract

ACS Nano ◽  
2018 ◽  
Vol 12 (7) ◽  
pp. 7246-7252 ◽  
Author(s):  
Dhani Nafday ◽  
Subhrangsu Sarkar ◽  
Pushan Ayyub ◽  
Tanusri Saha-Dasgupta
Keyword(s):  
Particle Size ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Voids in Irradiated Tungsten and Molybdenum

1969 ◽  
Vol 27 ◽  
pp. 190-191
Author(s):  
Robert C. Rau ◽  
Robert L. Ladd
Keyword(s):  
Melting Point ◽  
Fast Neutron ◽  
Neutron Irradiation ◽  
Elevated Temperatures ◽  
Irradiation Temperature ◽  
The Body ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Recent studies have shown the presence of voids in several face-centered cubic metals after neutron irradiation at elevated temperatures. These voids were found when the irradiation temperature was above 0.3 Tm where Tm is the absolute melting point, and were ascribed to the agglomeration of lattice vacancies resulting from fast neutron generated displacement cascades. The present paper reports the existence of similar voids in the body-centered cubic metals tungsten and molybdenum.

Atomistic Energetics and Critical Twinning Stress Prediction in Face and Body Centered Cubic Metals: Recent Progress

2018 ◽  
Vol 140 (2) ◽  
Author(s):  
Piyas Chowdhury ◽  
Huseyin Sehitoglu
Keyword(s):  
Recent Progress ◽  
Face Centered Cubic ◽  
Atomistic Modeling ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Planar Fault ◽  
Twin Nucleation ◽  
Stress Prediction ◽  
Face Centered ◽  
Fcc Alloy

This paper recounts recent advances on the atomistic modeling of twinning in body-centered cubic (bcc) and face-centered cubic (fcc) alloy. Specifically, we have reviewed: (i) the experimental evidence of twinning-dominated deformation in single- and multi-grain microstructures, (ii) calculation of generalized planar fault energy (GPFE) landscapes, and (iii) the prediction of critical friction stresses to initiate twinning-governed plasticity (e.g., twin nucleation, twin–slip and twin–twin interactions). Possible avenues for further research are outlined.

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