in FCC material, place highest to lowest energy: (111) surface, Vacancy, Dislocation, high angle grain boundary,...
in FCC material, place highest to lowest energy: (111) surface, Vacancy, Dislocation, high angle grain boundary, (100) surface, twin boundary.
Homework Answers
Highest to lowest energy ::
Vacancy > high angle grain boundary > dislocation > twin boundary > surface (100) > surface (111)
Vacancies play an extremely important role in diffusion processes, hence are at highere energy state.
The atoms in twin boundary are in undistorted positions and thus energy is low comparatively to grain boundary. and dislocations, while grain boundary is at higher energy states.
Based on the facet energy, minimum surface energy requirement predicts that the seed particle of FCC metals should adopt a tetrahedral or an octahedral shape enclosed by (1 1 1) facets. and for (100) surface the energy is relatively more.
Add Answer to:
in FCC material, place highest to lowest energy: (111) surface,
Vacancy, Dislocation, high angle grain boundary,...
Between the (external) surface energy and grain boundary energy in a solid material, which one is...
Between the (external) surface energy and grain boundary energy in a solid material, which one is greater? Surface energy is higher Grain boundary energy is higher. Neither. Both are equal. Not enough information to make this comparison Vanadium, molybdenum, and sodium all have a body-centered cubic structure. Given the following atomic radii, which two metals are most likely to form a solid solution? Metal Atomic radii V 0.131 Μο 0.136 Na 0.186 Vanadium, molybdenum Vanadium, sodium Molybdenum, sodium Defects play...
120 pts 5. (a) For a given material, is the surface energy to less than, greater...
120 pts 5. (a) For a given material, is the surface energy to less than, greater than, or the same as, the grain boundary energy? Why is this? b) Why is the grain boundary energy of a small-angle ( grain boundary less than that for a high-angle grain boundary? 20 pts 6. Aluminum-lithium alloys were developed by the aircraft industry to reduce the weight and improve the performance of its aircruft. a) If the desired density of a ercial aircraft...
16) An atom with a valence structure of 1s 2el 2nf 3ed 3pf 4e 3d would...
16) An atom with a valence structure of 1s 2el 2nf 3ed 3pf 4e 3d would behave most like a) Transition metal b) Alkal d Alkaline earth Part C) Multiple Choice (30 points, 3 pts each) d) Inert element e) Actinide n Isotropic 17) What statement below is true when comparing ideal HCP and FCC structures? al Elements with both are very ductile b) Atoms touch along the [100) directions c FCC metals have lower den d) None of the...
Between the (external) surface energy and grain boundary energy in a solid material, which one is greater? Surface energy is higher Grain boundary energy is higher. Neither. Both are equal. Not enough information to make this comparison Vanadium, molybdenum, and sodium all have a body-centered cubic structure. Given the following atomic radii, which two metals are most likely to form a solid solution? Metal Atomic radii V 0.131 Μο 0.136 Na 0.186 Vanadium, molybdenum Vanadium, sodium Molybdenum, sodium Defects play...
120 pts 5. (a) For a given material, is the surface energy to less than, greater than, or the same as, the grain boundary energy? Why is this? b) Why is the grain boundary energy of a small-angle ( grain boundary less than that for a high-angle grain boundary? 20 pts 6. Aluminum-lithium alloys were developed by the aircraft industry to reduce the weight and improve the performance of its aircruft. a) If the desired density of a ercial aircraft...
16) An atom with a valence structure of 1s 2el 2nf 3ed 3pf 4e 3d would behave most like a) Transition metal b) Alkal d Alkaline earth Part C) Multiple Choice (30 points, 3 pts each) d) Inert element e) Actinide n Isotropic 17) What statement below is true when comparing ideal HCP and FCC structures? al Elements with both are very ductile b) Atoms touch along the [100) directions c FCC metals have lower den d) None of the...
Most questions answered within 3 hours.
-
ORGANIC CHEMISTRY QUESTION 5
PART A--------
Describe a chemical test for the identification of a double...
asked 49 minutes ago -
Both Terence and Tong work at a local actuarial consulting firm
in Des Moines.
Terence arrives...
asked 1 hour ago -
QUESTION 11
. THE RESTING POTENTIAL IS CAUSED BY
.
. A.
. the rotation of...
asked 1 hour ago -
Need them in c++
1. Give the code for the
definition of a node for
the linked implementation of
a tree that contains...
asked 56 minutes ago -
For sputtering-cleaning and sputter-depositing a metal,
would you use an AC or DC plasma? Explain your...
asked 1 hour ago -
Defend ONE of the following statements:
Prices should reflect the value consumers are willing to
pay....
asked 1 hour ago -
A magnet of mass 0.10 kg is dropped from rest and falls
vertically through a 20.0...
asked 1 hour ago -
A friend approaches you about a nutritional product and ask you
if it is worth it....
asked 1 hour ago -
What is bacterial transformation? What are the differences and
similarities between transforming a bacterial cell with...
asked 1 hour ago -
A wire loop 20 cm high is dipped in soap solution and then held
vertically to...
asked 1 hour ago -
OK, now you're all mixed up and you slam into the wall with your
car (total...
asked 1 hour ago -
1. A.Explain why the spread (variance) of a sampling
distribution for estimating a mean would be...
asked 1 hour ago