K. Linga (KL) Murty < Research Achievements

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K. Linga (KL) Murtylt Research Achievements hcp
metals gt

• HCP metals (effect of c/a ratio)
• Processing effects on texture microstructure
• Experimental modeling (CODF-Plasticity)
• Prediction of Dimensional Changes
• Zr alloying and radiation effects
• Ti alloying and annealing effects - in progress
• Mg wrought vs cast - in progress

Nov. 00
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hcp metalseffects of c/a-ratio and alloying
high
low
ideal
Ti / Zr
Mg
Zn
Ti
Ti-Al-V
Zr
Zr-Nb
in-service prediction
formability
Nov. 00
3
CODF-Slip Model
Nov. 00
4
Biaxial Creep
a 1
Biaxial Creep eq, ez vs sq, sz sq vs sz at
constant W W Ü Creep Locus
5
Creep Loci
CWSR
CWSR
sq vs sz at constant W
Recrystallized
6
Zircaloys Expt vs CODF-slip Model Life
Prediction
cold-work texture grain-shape anisotropy
in-reactor prediction
?
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Stress and Temperature Dependence
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Model Equations for Predicting In-Reactor Creep
Thermal Creep Steady-State Creep-Rate Creep
Strain , where Effect of Stress
Changes Generalized Stress Strain - Rate
Radiation Creep Growth
in-reactor prediction
?
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Transients in Creep - Irradiated Zry-2
Franklin Model
NCSU Model
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Dislocation MicrostructuresInfluence of Alloying
/ Stress-State
cp-Ti vs Ti3Al2.5V
Biaxial Loading vs Uniaxial Loading
need further investigation
Nov. 00