Developing a low-alloyed fine-grained Mg alloy with high strength-ductility based on dislocation evolution and grain boundary segregation

2022 ◽  
Vol 209 ◽  
pp. 114414
Author(s):  
Zhi Zhang ◽  
Jinghuai Zhang ◽  
Jinshu Xie ◽  
Shujuan Liu ◽  
Yuying He ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
High Strength ◽  
Grain Boundary Segregation ◽  
Mg Alloy ◽  
Fine Grained

Grain-boundary segregation in an Al-8 wt % Mg alloy

1982 ◽  
Vol 17 (5) ◽  
pp. 1479-1486 ◽  
Author(s):  
T. Malis ◽  
M. C. Chaturvedi
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Mg Alloy

A STEM study of grain-boundary segregation in Al-6.5 wt% Mg alloy

1986 ◽  
Vol 21 (12) ◽  
pp. 4257-4261 ◽  
Author(s):  
D. C. Paine ◽  
G. C. Weatherly ◽  
K. T. Aust
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Mg Alloy

Influence of boron on phosphorus grain boundary segregation behaviour in high-strength interstitial free steels

2015 ◽  
Vol 19 (sup10) ◽  
pp. S10-225-S10-229
Author(s):  
X. L. Song ◽  
R. B. Lian ◽  
K. Peng ◽  
B. Liu ◽  
J. Jia ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
High Strength ◽  
Grain Boundary Segregation ◽  
Interstitial Free

Low-magnification Quantitative X-ray Mapping of Grain-boundary Segregation in Aluminum–4 wt.% Copper by Analytical Electron Microscopy

1999 ◽  
Vol 5 (4) ◽  
pp. 254-266 ◽  
Author(s):  
D.T. Carpenter ◽  
M. Watanabe ◽  
K. Barmak ◽  
D.B. Williams
Keyword(s):  
Grain Boundary ◽  
Analytical Electron Microscopy ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Acquisition Time ◽  
X Ray ◽  
Fine Grained ◽  
Trade Offs ◽  
Analytical Electron ◽  
Counting Statistics

Abstract: Quantitative X-ray mapping in the analytical electron microscope (AEM) could improve the statistics of grain-boundary segregation measurements if high spatial resolution can be maintained at lower magnifications (<500 kX). Typically, only about 10 boundaries are analyzed because of the difficulty of conventional AEM measurements; however, a low-magnification quantitative X-ray map could contain twice this number of boundaries in a single field of view. Microscope conditions and mapping parameters have been explored for operation at ∼250 kX, under a variety of conditions to illustrate the trade-offs between various characteristics, such as analytical resolution, counting statistics, magnification, and acquisition time. From these data, it is possible to extrapolate to maps generated under different conditions and estimate their limitations with respect to these characteristics. A simple model has been developed to describe the behavior of inclined grain boundaries that can be used to estimate the detectability of segregant as a function of boundary tilt. Using quantitative X-ray maps, grain boundary Cu coverage has been measured from 55 boundaries in Al–4 wt.% Cu with minimal user effort. For fine-grained thin films, mapping is substantially more efficient than other methods of data acquisition and may be used to measure segregation at large numbers of boundaries.

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