Material Science an der Technische Hochschule Ingolstadt | Karteikarten & Zusammenfassungen

# Lernmaterialien für Material Science an der Technische Hochschule Ingolstadt

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TESTE DEIN WISSEN
How many different slip planes exist in a BCC structure? How many slip systems do result?
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TESTE DEIN WISSEN
6 orientations of slip planes 12 systems 4 directions
Lösung ausblenden
TESTE DEIN WISSEN
Indicate the number of slip directions per slip plane and the total number of slip systems which can be found in a FCC structure.
Lösung anzeigen
TESTE DEIN WISSEN
three slip directions per plane 12 slip systems
Lösung ausblenden
TESTE DEIN WISSEN
Compare BCC and FCC. Refer to packing density, number of slip systems, formability. Give reasons for possible differences.
Lösung anzeigen
TESTE DEIN WISSEN
0,68 - 0,74 12 systems within close packed planes, no hexagonal planes - 12 systems in 4 hexagonal planes good, higher yield strength than FCC - very good, low yield strength
Lösung ausblenden
TESTE DEIN WISSEN
Which two metallic structures are obtained by different stapling of dense packed layers? Which staple sequences have to be held?
Lösung anzeigen
TESTE DEIN WISSEN
HCP ABAB FCC ABCABC
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TESTE DEIN WISSEN
Cuántos átomos  por celda hay en la celda cúbica simple
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TESTE DEIN WISSEN
1 átomo por celda
Lösung ausblenden
TESTE DEIN WISSEN
Why do grain boundaries impede plastic deformation?
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TESTE DEIN WISSEN
dislocations cannot pass grain boundaries
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TESTE DEIN WISSEN
Qué  es un motivo?
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TESTE DEIN WISSEN
Es un átomo o grupo de átomos
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TESTE DEIN WISSEN
What is the relation of the different types of precipitation to the host lattices?
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TESTE DEIN WISSEN
coherent: continuous lattice plane distortion of surrounding lattice - long range effect non-coherent: no continuous lattice plane no distortion
Lösung ausblenden
TESTE DEIN WISSEN
Qué es un cristal?
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TESTE DEIN WISSEN
Es una red cristalina con un átomo
Lösung ausblenden
TESTE DEIN WISSEN
How is the diffusion coefficient influenced by temperature?
Lösung anzeigen
TESTE DEIN WISSEN
diffusion needs enough energy to overcome the energy barrier, the diffusion coefficient depends on temperature
Lösung ausblenden
TESTE DEIN WISSEN
Indicate and describe two diffusion mechanisms within real crystals. which is apt for carbon atoms, which for iron atoms in steel?
Lösung anzeigen
TESTE DEIN WISSEN
interstitial diffusion: foreign smaller atoms occupy interstitial places within solid solutions vacancy diffusion: atoms of the host lattice or foreign atoms of similar or bigger sizes occupy regular places within the lattice interstitial for carbon vacancy for iron
Lösung ausblenden
TESTE DEIN WISSEN
How can alloying atoms be incorporated into a lattice? how does the size of the atoms influence the mode of incorporation?
Lösung anzeigen
TESTE DEIN WISSEN
atoms at interstitial positions: small atoms are placed at interstitial positions substitutional atoms: similar atoms replace host atom at ordinary places of the lattice
Lösung ausblenden
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## Beispielhafte Karteikarten für deinen Material Science Kurs an der Technische Hochschule Ingolstadt - von Kommilitonen auf StudySmarter erstellt!

Q:
How many different slip planes exist in a BCC structure? How many slip systems do result?
A:
6 orientations of slip planes 12 systems 4 directions
Q:
Indicate the number of slip directions per slip plane and the total number of slip systems which can be found in a FCC structure.
A:
three slip directions per plane 12 slip systems
Q:
Compare BCC and FCC. Refer to packing density, number of slip systems, formability. Give reasons for possible differences.
A:
0,68 - 0,74 12 systems within close packed planes, no hexagonal planes - 12 systems in 4 hexagonal planes good, higher yield strength than FCC - very good, low yield strength
Q:
Which two metallic structures are obtained by different stapling of dense packed layers? Which staple sequences have to be held?
A:
HCP ABAB FCC ABCABC
Q:
Cuántos átomos  por celda hay en la celda cúbica simple
A:
1 átomo por celda
Q:
Why do grain boundaries impede plastic deformation?
A:
dislocations cannot pass grain boundaries
Q:
Qué  es un motivo?
A:
Es un átomo o grupo de átomos
Q:
What is the relation of the different types of precipitation to the host lattices?
A:
coherent: continuous lattice plane distortion of surrounding lattice - long range effect non-coherent: no continuous lattice plane no distortion
Q:
Qué es un cristal?
A:
Es una red cristalina con un átomo
Q:
How is the diffusion coefficient influenced by temperature?
A:
diffusion needs enough energy to overcome the energy barrier, the diffusion coefficient depends on temperature
Q:
Indicate and describe two diffusion mechanisms within real crystals. which is apt for carbon atoms, which for iron atoms in steel?
A:
interstitial diffusion: foreign smaller atoms occupy interstitial places within solid solutions vacancy diffusion: atoms of the host lattice or foreign atoms of similar or bigger sizes occupy regular places within the lattice interstitial for carbon vacancy for iron
Q:
How can alloying atoms be incorporated into a lattice? how does the size of the atoms influence the mode of incorporation?
A:
atoms at interstitial positions: small atoms are placed at interstitial positions substitutional atoms: similar atoms replace host atom at ordinary places of the lattice

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