- eclipses are more important than gauche in stability
- In a binary alloy of metals A and B, the solid phase alpha shows coring in grains of an average radius of 25 μm. At the homogenization temperature, the diffusion constant for metal A is 3*10^-9 cm^2/s. The minimum time needed for eliminating coring is
- A unary phase diagram with both temperature and pressure as variables has/may have ____ triple points
- FCC iron becomes BCC iron following the Avrami equation. At t=12.6s, 20% is transformed. At t=28.2s, 805 is transformed. The time required for 95% completion is
- An act which provided land for settlers in the West was known as the
- In a binary phase diagram, a tie line is drawn in
- Supposed metal A has a higher melting point than metal B. When a few atomic% of metal B is added to metal A, the melting point of the resulting alloy is ____ than the melting point of A
- In a binary alloy, when a liquid of eutectic composition is slowly cooled through the eutectic temperature, it transforms to
- __________was the name of the plan for Lincoln's Reconstruction?
- According to the policy of Laissez-Faire the economy functions best when the government
- During solidification in a given system, the nucleation rate ___ with decreasing solidification temperature
- Avrami solidification kinetics, n=1.7. If the reaction is 50% complete after 100s, the time required for 99% completion is
- In a unary phase diagram with both temperature and pressure as variable, the number of degrees of freedom at a triple point is
- Recrystallization following the Avrami equation, n=2.5. If the reaction is 40% complete after 200 min, then the time required for 90% completion is
- The solid phase in an isomorphous system cannot be strengthened by the
- Did the British survive the air attacks by the Germans?
- Assuming nuclei to be cubes of side length 2R instead of spheres of size r, r+ (critical r for cube) is ____ r* (critical radius of sphere)
- Who was the British Prime Minister during WWII?
- Assuming nuclei to be cubes of side length 2R instead of spheres of size r, ΔG+ (for cube) is ____ ΔG* (for sphere)
- During solidification in a given system, the overall transformation rate ___ with decreasing solidification temperature