Driving force of zero-macroscopic-strain deformation twinning in face-centred-cubic metals

2021 ◽  
pp. 1-13
Author(s):  
Hongxian Xie ◽  
Gaobing Wei ◽  
Yuanfang Lu ◽  
Junping Du ◽  
Fuxing Yin ◽  
...  
Keyword(s):  
Driving Force ◽  
Deformation Twinning ◽  
Macroscopic Strain ◽  
Cubic Metals

scholarly journals New Deformation Twinning Mechanism Generates Zero Macroscopic Strain in Nanocrystalline Metals

2008 ◽  
Vol 100 (9) ◽  
Author(s):  
X. L. Wu ◽  
X. Z. Liao ◽  
S. G. Srinivasan ◽  
F. Zhou ◽  
E. J. Lavernia ◽  
...  
Keyword(s):  
Deformation Twinning ◽  
Nanocrystalline Metals ◽  
Macroscopic Strain

The Role of Texture, Temperature and Strain Rate in the Activity of Deformation Twinning

2005 ◽  
Vol 495-497 ◽  
pp. 1037-1042 ◽  
Author(s):  
Donald W. Brown ◽  
Sean R. Agnew ◽  
S.P. Abeln ◽  
W.R. Blumenthal ◽  
Mark A.M. Bourke ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Deformation Mode ◽  
Relative Activity ◽  
Deformation Twinning ◽  
Underlying Structure ◽  
Cubic Metals ◽  
Pyramidal Slip ◽  
Crystallographic Symmetry

Plastic deformation in cubic metals is relatively simple due to the high crystallographic symmetry of the underlying structure. Typically, one unique slip mode can provide arbitrary deformation. This is not true in lower symmetry hexagonal metals, where prismatic and basal slip (the usual favored modes) are insufficient to provide arbitrary deformation. Often, either pyramidal slip and/or deformation twinning must be activated to accommodate imposed plastic deformation. The varied difficulty of activating each of these deformation mechanisms results in a highly anisotropic yield surface and subsequent mechanical properties. Further, the relative activity of each deformation mode may be manipulated through control of the initial crystallographic texture, opening new opportunities for the optimization of mechanical properties for a given application.

Direct observation of deformation twinning under stress gradient in body-centered cubic metals

2018 ◽  
Vol 155 ◽  
pp. 56-68 ◽  
Author(s):  
Binbin Jiang ◽  
Aidong Tu ◽  
Hao Wang ◽  
Huichao Duan ◽  
Suyun He ◽  
...  
Keyword(s):  
Direct Observation ◽  
Stress Gradient ◽  
Deformation Twinning ◽  
Body Centered Cubic ◽  
Cubic Metals

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.

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