Room Temperature Deformation Mechanisms of Alumina Particles Observed from In Situ Micro-compression and Atomistic Simulations

2015 ◽  
Vol 25 (1-2) ◽  
pp. 82-93 ◽  
Author(s):  
Pylin Sarobol ◽  
Michael Chandross ◽  
Jay D. Carroll ◽  
William M. Mook ◽  
Daniel C. Bufford ◽  
...  
Keyword(s):  
Room Temperature ◽  
Deformation Mechanisms ◽  
Atomistic Simulations ◽  
Temperature Deformation ◽  
Alumina Particles

On the room temperature deformation mechanisms of a TiZrHfNbTa refractory high-entropy alloy

2015 ◽  
Vol 645 ◽  
pp. 255-263 ◽  
Author(s):  
J.-Ph. Couzinié ◽  
L. Lilensten ◽  
Y. Champion ◽  
G. Dirras ◽  
L. Perrière ◽  
...  
Keyword(s):  
Room Temperature ◽  
Deformation Mechanisms ◽  
Temperature Deformation ◽  
High Entropy Alloy ◽  
High Entropy

Microscopic study of the room temperature deformation mechanisms in β+γ' – (70 at.% Ni −30 at.% Al) in situ composite

1992 ◽  
Vol 50 (1) ◽  
pp. 912-913
Author(s):  
A. Misra ◽  
R. Gibala
Keyword(s):  
Microscopic Study ◽  
Room Temperature ◽  
Temperature Deformation ◽  
Nominal Composition ◽  
Second Phase ◽  
Directionally Solidified ◽  
Ductile Phase ◽  
Two Phase ◽  
Room Temperature Ductility

Ductile phase reinforcement is an attractive approach for enhancing the room temperature ductility and toughness of brittle intermetallics such as β−NiAl. For example, a directionally solidified alloy of nominal composition 70 at.% Ni −30 at.% Al, having a two-phase β (brittle matrix) and γ (ductile second phase) microstructure, exhibits up to 9% tensile ductility at room temperature [1]. In the present investigation, a microscopic study has been made to understand the mechanisms involved in the ductility enhancement of the β + γ composite.

Microstructure and room temperature deformation of Nbss/Nb5Si3 in situ composites alloyed with Mo

2001 ◽  
Vol 9 (6) ◽  
pp. 521-527 ◽  
Author(s):  
Won-Yong Kim ◽  
Hisao Tanaka ◽  
Akio Kasama ◽  
Ryohei Tanaka ◽  
Shuji Hanada
Keyword(s):  
Room Temperature ◽  
Temperature Deformation ◽  
In Situ Composites

Room temperature deformation mechanisms of Mg/Nb nanolayered composites

2018 ◽  
Vol 33 (10) ◽  
pp. 1311-1332 ◽  
Author(s):  
Milan Ardeljan ◽  
Marko Knezevic ◽  
Manish Jain ◽  
Siddhartha Pathak ◽  
Anil Kumar ◽  
...  
Keyword(s):  
Room Temperature ◽  
Deformation Mechanisms ◽  
Temperature Deformation ◽  
Image Position

Abstract

Enhanced plasticity in a Ti-based bulk metallic glass-forming alloy by in situ formation of a composite microstructure

2002 ◽  
Vol 17 (12) ◽  
pp. 3015-3018 ◽  
Author(s):  
G. He ◽  
W. Löser ◽  
J. Eckert ◽  
L. Schultz
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Room Temperature ◽  
Shear Bands ◽  
Temperature Deformation ◽  
Glassy Matrix ◽  
Glass Forming ◽  
Injection Casting ◽  
Composite Microstructure

A bulk metallic glass-forming Ti–Cu–Ni–Sn alloy with in situ formed composite microstructure prepared by both centrifugal and injection casting presents more than 6% plastic strain under compressive stress at room temperature. The in situ formed composite contains dendritic hexagonal-close-packed-Ti solid solution precipitates and a few Ti3Sn, β –(Cu, Sn) grains dispersed in a glassy matrix. The composite microstructure can avoid the development of the highly localized shear bands typical for the room-temperature deformation of monolithic glasses. Instead, highly developed shear bands with evident protuberance are observed, resulting in significant yielding and homogeneous plastic deformation over the entire sample.

scholarly journals In Situ Synchrotron Diffraction Analysis of Zn Additions on the Compression Properties of NK30

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3935
Author(s):  
Domonkos Tolnai ◽  
Marie-Anne Dupont ◽  
Serge Gavras ◽  
Klaudia Fekete-Horváth ◽  
Andreas Stark ◽  
...  
Keyword(s):  
Room Temperature ◽  
Deformation Twin ◽  
Deformation Mechanisms ◽  
Synchrotron Diffraction ◽  
Compression Properties ◽  
Zn Addition ◽  
Synchrotron Radiation Diffraction ◽  
Twin Growth ◽  
Zn Alloys

In situ synchrotron radiation diffraction was performed during the compression of as-cast Mg–3Nd–Zn alloys with different amounts (0, 0.5, 1, and 2 wt %) of Zn addition at room temperature. During the tests, the acoustic emission signals of the samples were recorded. The results show that the addition of Zn decreased the strength of the alloys but, at the same time, increased their ductility. In the earlier stages of deformation, twin formation and basal slip were the dominant deformation mechanisms. The twins tended to grow during the entire compression stage; however, the formation of new twins dominated only at the beginning of the plastic deformation. In order to accommodate the strain levels, the alloys containing Zn underwent nonbasal slip in the later stages of deformation. This can be attributed to the presence of precipitates containing Zn in the microstructure, inhibiting twin growth.

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