Effect of initial grain sizes on the grain boundary network during grain boundary engineering in Alloy 690

2013 ◽  
Vol 28 (9) ◽  
pp. 1165-1176 ◽  
Author(s):  
Tingguang Liu ◽  
Shuang Xia ◽  
Hui li ◽  
Bangxin Zhou ◽  
Qin Bai ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Grain Boundary Engineering ◽  
Grain Sizes ◽  
Alloy 690 ◽  
Image Position

Abstract

Precision grain Boundary Engineering in commercial Bi2Te2.7Se0.3 thermoelectric materials towards high performance

2021 ◽  
Author(s):  
Shuankui Li ◽  
Zhongyuan Huang ◽  
Rui Wang ◽  
Chaoqi Wang ◽  
Wenguang Zhao ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Thermoelectric Materials ◽  
High Performance ◽  
General Strategy ◽  
Grain Boundary Engineering

The strong interrelation between electrical and thermo parameters have been regarded as one of the biggest bottlenecks to obtain high-performance thermoelectric materials. Therefore, to explore a general strategy to fully...

An atom probe tomography study of grain boundary segregation in nanocrystalline Ni-W

2005 ◽  
Vol 903 ◽  
Author(s):  
Andrew Detor ◽  
Michael K. Miller ◽  
Christopher A. Schuh
Keyword(s):  
Grain Boundary ◽  
Atom Probe Tomography ◽  
Boundary Segregation ◽  
Atom Probe ◽  
Solute Segregation ◽  
Grain Boundary Segregation ◽  
Distribution Analysis ◽  
Grain Sizes ◽  
Composition Fluctuations ◽  
20 Nm

AbstractAtom probe tomography is used to observe the solute distribution in electrodeposited nanocrystalline Ni-W alloys with three different grain sizes (3, 10, and 20 nm) and the results are compared with atomistic computer simulations. The presence of grain boundary segregation is confirmed by detailed analysis of composition fluctuations in both experimental and simulated structures, and its extent quantified by a frequency distribution analysis. In contrast to other nanocrystalline alloys, the present Ni-W alloys exhibit only a subtle amount of solute segregation to the intergranular regions. This finding is consistent with quantitative predictions for these alloys based upon a thermodynamic model of grain boundary segregation.

Grain‐Boundary Engineering of Monolayer MoS 2 for Energy‐Efficient Lateral Synaptic Devices

2021 ◽  
pp. 2102435
Author(s):  
Xuewen Wang ◽  
Bolun Wang ◽  
Qinghua Zhang ◽  
Yufei Sun ◽  
Enze Wang ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Energy Efficient ◽  
Grain Boundary Engineering
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