scholarly journals Three-dimensional in situ characterization of phase transformation induced austenite grain refinement in nickel-titanium

2019 ◽  
Vol 162 ◽  
pp. 361-366 ◽  
Author(s):  
A.N. Bucsek ◽  
L. Casalena ◽  
D.C. Pagan ◽  
P.P. Paul ◽  
Y. Chumlyakov ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Grain Refinement ◽  
Three Dimensional ◽  
Nickel Titanium ◽  
In Situ Characterization ◽  
Austenite Grain

scholarly journals In-situ characterization of highly reversible phase transformation by synchrotron X-ray Laue microdiffraction

2016 ◽  
Vol 108 (21) ◽  
pp. 211902 ◽  
Author(s):  
Xian Chen ◽  
Nobumichi Tamura ◽  
Alastair MacDowell ◽  
Richard D. James
Keyword(s):  
Phase Transformation ◽  
In Situ Characterization ◽  
X Ray ◽  
Reversible Phase ◽  
Laue Microdiffraction

scholarly journals Functional Tomographic Fluorescence Imaging of pH Microenvironments in Microbial Biofilms by Use of Silica Nanoparticle Sensors

2009 ◽  
Vol 75 (23) ◽  
pp. 7426-7435 ◽  
Author(s):  
Gabriela Hidalgo ◽  
Andrew Burns ◽  
Erik Herz ◽  
Anthony G. Hay ◽  
Paul L. Houston ◽  
...  
Keyword(s):  
Fluorescence Imaging ◽  
Tricarboxylic Acid Cycle ◽  
Three Dimensional ◽  
Silica Nanoparticle ◽  
In Situ Characterization ◽  
Local Conditions ◽  
Glucose Addition ◽  
Microbial Biofilms

ABSTRACT Attached bacterial communities can generate three-dimensional (3D) physicochemical gradients that create microenvironments where local conditions are substantially different from those in the surrounding solution. Given their ubiquity in nature and their impacts on issues ranging from water quality to human health, better tools for understanding biofilms and the gradients they create are needed. Here we demonstrate the use of functional tomographic imaging via confocal fluorescence microscopy of ratiometric core-shell silica nanoparticle sensors (C dot sensors) to study the morphology and temporal evolution of pH microenvironments in axenic Escherichia coli PHL628 and mixed-culture wastewater biofilms. Testing of 70-, 30-, and 10-nm-diameter sensor particles reveals a critical size for homogeneous biofilm staining, with only the 10-nm-diameter particles capable of successfully generating high-resolution maps of biofilm pH and distinct local heterogeneities. Our measurements revealed pH values that ranged from 5 to >7, confirming the heterogeneity of the pH profiles within these biofilms. pH was also analyzed following glucose addition to both suspended and attached cultures. In both cases, the pH became more acidic, likely due to glucose metabolism causing the release of tricarboxylic acid cycle acids and CO2. These studies demonstrate that the combination of 3D functional fluorescence imaging with well-designed nanoparticle sensors provides a powerful tool for in situ characterization of chemical microenvironments in complex biofilms.

In-Situ Characterization of Three-Dimensional Optical Matters by Light Diffraction

2009 ◽  
Vol 26 (7) ◽  
pp. 074201 ◽  
Author(s):  
Jiang Lai-Dong ◽  
Dai Qiao-Feng ◽  
Feng Tian-Hua ◽  
Liu Jin ◽  
Wu Li-Jun ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Light Diffraction ◽  
In Situ Characterization

In-situ characterization of three dimensional worn surface under sliding-rolling contact

Wear ◽  
2019 ◽  
Vol 426-427 ◽  
pp. 1781-1787 ◽  
Author(s):  
Chan Xu ◽  
Tonghai Wu ◽  
Yanwen Huo ◽  
Hongbin Yang
Keyword(s):  
Three Dimensional ◽  
Rolling Contact ◽  
In Situ Characterization ◽  
Worn Surface

In situ characterization of martensite variant formation in nickel–titanium shape memory alloy under biaxial loading

2011 ◽  
Vol 65 (10) ◽  
pp. 915-918 ◽  
Author(s):  
T. Niendorf ◽  
J. Lackmann ◽  
B. Gorny ◽  
H.J. Maier
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Biaxial Loading ◽  
Nickel Titanium ◽  
In Situ Characterization ◽  
Martensite Variant ◽  
Variant Formation

In-situ characterization of transformation plasticity during an isothermal austenite-to-bainite phase transformation

2012 ◽  
Vol 65 ◽  
pp. 100-108 ◽  
Author(s):  
M.J. Holzweissig ◽  
D. Canadinc ◽  
H.J. Maier
Keyword(s):  
Phase Transformation ◽  
Transformation Plasticity ◽  
In Situ Characterization

Microstructural formation in Ti alloys: In-situ characterization of phase transformation kinetics

JOM ◽  
2007 ◽  
Vol 59 (1) ◽  
pp. 54-58 ◽  
Author(s):  
E. Aeby-Gautier ◽  
F. Bruneseaux ◽  
J. Da Costa Teixeira ◽  
B. Appolaire ◽  
G. Geandier ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Transformation Kinetics ◽  
In Situ Characterization ◽  
Ti Alloys ◽  
Phase Transformation Kinetics

In situ characterization of backstress effects on the austenite-to-bainite phase transformation

2012 ◽  
Vol 67 (4) ◽  
pp. 368-371 ◽  
Author(s):  
M.J. Holzweissig ◽  
D. Canadinc ◽  
H.J. Maier
Keyword(s):  
Phase Transformation ◽  
In Situ Characterization
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