Determination of stacking fault probability in fcc Fe–Mn–Si–Al alloy by electron diffraction

2007 ◽  
Vol 101 (9) ◽  
pp. 093511 ◽  
Author(s):  
X. D. Wang ◽  
B. X. Huang ◽  
Y. H. Rong ◽  
L. Wang
Keyword(s):  
Electron Diffraction ◽  
Stacking Fault ◽  
Al Alloy ◽  
Fault Probability ◽  
Stacking Fault Probability

Plastic Deformation and the Role of Fault Formation in the Equation of State of Micron Size Intermetallic Alloys Under Non-Hydrostatic Pressure

2003 ◽  
Vol 791 ◽  
Author(s):  
John K. Vassiliou ◽  
J. W. Otto ◽  
G. Frommeyer ◽  
J. J. Davis ◽  
P. Pinto
Keyword(s):  
Plastic Deformation ◽  
Equation Of State ◽  
Stacking Faults ◽  
Stacking Fault ◽  
Contact Forces ◽  
Intermetallic Alloys ◽  
Fault Probability ◽  
Micron Size ◽  
Diamond Anvils ◽  
Stacking Fault Probability

ABSTRACTThe elastic and plastic deformation of micron size anisotropic polycrystals of Ni3Al and Cu3Au intermetallic alloys have been studied under non-hydrostatic conditions by energy-dispersive X-ray diffraction (EDX) in a diamond-anvil cell. Compression was achieved by confining the samples in a viscous fluid or directly between the diamond anvils. Deviatoric forces are introduced in the samples as a result of the increasing viscosity with pressure and the eventual glassification of the pressurizing medium or by the contact forces of the diamond anvils. Line shifts and line profiles were used to analyze elastic and plastic strains. Plastic deformation is due to the onset of non-hydrostatic stresses and the introduction of stacking faults and dislocations. A volume incompressibility due to plastic deformation and the saturation of the stacking fault probability is followed by an elastic compression of a fully plastically deformed state. The compression of this state is isotropic and independent of the presence and type of the pressurizing medium. From the measured strains at different crystallographic orientations, the uniaxial stress and the stacking fault probability as a function of the confining pressure are derived and their role in the equation of state is examined. Using finite elasticity, the equation of state is derived in the presence of uniaxial stresses causing stacking faults, defects and dislocations.

Effect of Si and Cr on stacking fault probability and damping capacity of Fe–Mn alloy

2008 ◽  
Vol 479 (1-2) ◽  
pp. 223-228 ◽  
Author(s):  
S.K. Huang ◽  
N. Li ◽  
Y.H. Wen ◽  
J. Teng ◽  
S. Ding ◽  
...  
Keyword(s):  
Stacking Fault ◽  
Damping Capacity ◽  
Fault Probability ◽  
Stacking Fault Probability
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