
ZME P5
Authored by Vojtěch Průcha
Science
1st - 3rd Grade
Used 9+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakou krystalografickou mřížku má austenit?
HCP
FCC
BCC
TBC
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaká je maximální rozpustnost uhlíku v železe ?
0,02
2,14
0,1
0,2
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Vyberte prvky, které jsou austenitotvorné. (více možností)
Ni
C
Cr
Mn
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Vyberte prvek díky kterému bude v soustavě železo-uhlík, krystalizovat přebytečný uhlík jako grafit (stabilní soustava Fe-C).
Cr
W
Mn
Si
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jak je posunutý stabilní diagram Fe-C vůči metastabilnímu Fe-Fe3C?
pouze vlevo
vpravo a nahoru
pouze vpravo
vlevo a nahoru
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jak se mění mechanické vlastnosti, se zvyšující se koncentrací uhlíku (do 0,6% C) u nelegovaných ocelí.
roste pevnost a tvrdost
snižuje se tvrdost
zvyšuje se tažnost
roste vrubová houževnatost
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Z jakých fází se skládá struktura zvaná Ledeburit?
feritu a cementitu
je to pouze cementit
austenitu a cementitu
perlitu a cementitu
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