MSEASUSlides: Muddiest Point: Phase Diagrams V Fe-Fe3C Microstructures S…
11
Muddiest Points Phase Diagrams V: FeFe 3 C Phase Diagram Microstructures Muddiest Points: • I don't know the difference between pearlite vs. ferrite vs. austenite vs. cemenDte. • What is the difference between microstructure and phase? • What does terminology like "eutectoid" and "proeutectoid" mean when talking about microstructure? • How do I draw microstructures given fracDons, temperature and composiDon?
-
Upload
mseasuslides -
Category
Education
-
view
747 -
download
3
description
This slide set corresponds to the MaterialsConcepts YouTube video "Muddiest Point: Phase Diagrams V Fe-Fe3C Microstructures". Here's the link: http://www.youtube.com/watch?v=wZgpTHZSuNY To study the vocab used in this video, visit this site: http://quizlet.com/20699514/54-steel-heat-treatment-and-microstructures-flash-cards/ This work was supported by NSF Grants #0836041 and #1226325.
Transcript of MSEASUSlides: Muddiest Point: Phase Diagrams V Fe-Fe3C Microstructures S…
Muddiest Points Phase Diagrams V: Fe-‐Fe3C Phase Diagram Microstructures
Muddiest Points: • I don't know the difference between pearlite vs. ferrite vs. austenite vs. cemenDte.
• What is the difference between microstructure and phase?
• What does terminology like "eutectoid" and "proeutectoid" mean when talking about microstructure?
• How do I draw microstructures given fracDons, temperature and composiDon?
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 1076 steel at 728°C
Phase CalculaDons
6.67 1 0 Co
ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
α
α +Fe3C
Fe3C +γ
0.76%
Fe3C
X 727°C
Given 1) 728°C 2) 1076 Steel
Microstructure:
γ
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 1076 steel at 726°C
Phase CalculaDons
6.67 1 0 Co ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
γ
α
α +Fe3C
Fe3C +γ
Cα CFe3C
U T
0.76%
Fe3C
X0.022%
727°C
0.022%
Given 1) 726°C 2) 1076 Steel
Microstructure:
α
Fe3C
!"#$%&#&'()#&*&')"+)!,)&,)!")
!"#$%&#&'()#&*&')"+)-%)&,)#")
.$'/010)2/301",)
4.$)
5.$)
!+!"!
! + #"
!"
# #"!""#
Eutectic Phase Diagram Terminology
$%&'" $()'"*+,-+./0+)"$123"4"()'"""
56-+7827909"*+,-3" 56-7:7827909"*+,-3"
!"#$%&%'()%*+,#*"%#"*$'-./0'1#/'2'34'
5
!"#$%&%'()'*'
(*(*('
+'
./'67'.89':;<'';+7-./02'34'
,-./$/0'1-$23''14250',-./$'6#3''78.%#30'
=/'67'.8=:;<';+7'-./02'34',-./$/0'1-$23''14250',-./$'6#3''78.%#30'
>' 3
3'>?3'
@!=" @#= 1- @! "
A'A'
('*'
α Fe3C α Fe3C α Fe3C
α
For 1030 steel at 1000°C
Single Phase Region Microstructure
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
Given 1) 1000°C 2) 1030 Steel
Co
X
0.3%
Microstructure:
γ
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 1030 steel at 850°C
Phase CalculaDons
6.67 1 0 Co ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature 850
α
α +Fe3C
Fe3C +γ
Cα Cγ
Q P
0.3%
X
Fe3C
727°C
0.45% 0.01%
Given 1) 850°C 2) 1030 Steel
Microstructure:
γ
α
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 1030 steel at 728°C
Phase CalculaDons
6.67 1 0 Co ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
α
α +Fe3C
Fe3C +γ
Cα Cγ
R S
0.3%
X
0.022 %
0.76%
Fe3C
727°C
Given 1) 728°C 2) 1030 Steel
Microstructure:
α
γ
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 1030 steel at 726°C
Phase CalculaDons
6.67 1 0 Co ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
γ
α
α +Fe3C
Fe3C +γ
Cα CFe3C
U T
0.3%
Fe3C
X0.022% 727°C
0.022 %
Given 1) 726°C 2) 1030 Steel
Microstructure:
α
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 10100 steel at 728°C
Phase CalculaDons
6.67 1 0 Co
ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
γ
α
α +Fe3C
Fe3C +γ
CFe3C
V W
1%
Fe3C
X
0.022%
727°C
Cγ 0.76%
Given 1) 78°C 2) 10100 Steel
Microstructure:
Fe3C
γ
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-72
CE7-#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"%&
'(%")*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"
γ
For 10100 steel at 726°C
Phase CalculaDons
6.67 1 0 Co 1% ComposiDon-‐ Wt% C
1000
800
600
400
Tempe
rature
γ
α
α +Fe3C
Fe3C +γ
Cα CFe3C
Y Z
Fe3C
X0.022%
727°C
0.022%
Given 1) 726°C 2) 10100 Steel
Microstructure:
Fe3C
Summary of Eutectoid Microstructures
γ
γ α α
γ
α
α
α
α
α
α
α
α
Fe3C
!""#
$""#
%""#
&"""#
&'""#
&!""#
&$""#
"# &# '# (# !# )# $# $*+"#
,-.,-(/#0123-#4526728.009#0:/9;<=#
/>8?>35@>A.#BC*#D#/#
9-8?-
72CE7-
#F/##
!*(#
+'+#F/#
&&!+#F/#&(G!F/#
G&'F/#
&!G(F/#&)(%F/#
"*+$#
"*"''#
H#IJ#H#
IK#LE3C-A5C-#
IJ#,-(/##M#J#I###
M#J#,-(/# ,-(/K#/-8-A@C-#
!#
"#$%&$'()*+%,&-'./*01%.*,*2(.34%*2'4()*51,2%*&''42*(.$'*$6'*)(7%8%.$*2'4()*51,2%2**
MK#,-775C-#
!"
"#"$"!""""#" %&%''"
!"#$"
%&'(%"
)*+))
()*+",-."/01/(1023-4)"
+,#$,-./,01)2'3)4)+)
%&56"
!$",78/"
#"$",78/"
5'5"9/"
5356)
,78/"γ
Fe3C
α
X
X
X X
X X
ComposiDon-‐ Wt% C
X X
α
α
Fe3C
Fe3C
γ
γ γ
α
Muddiest Points Phase Diagrams V: Fe-‐Fe3C Phase Diagram Microstructures
Muddiest Points: • I don't know the difference between pearlite vs. ferrite vs. austenite vs. cemenDte.
• What is the difference between microstructure and phase?
• What does terminology like "eutectoid" and "proeutectoid" mean when talking about microstructure?
• How do I draw microstructures given fracDons, temperature and composiDon?
