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4

4.1

4.2

4.3

4.4

4.5


4.1.1

1.

(1)

(2)

(3)

2.


(1)

4-1


4-2

4-3


:

;

(T1)


(2)

4-4


(3)

:


2.

1394 912

-Fe -Fe -Fe 4-1

4-5


4-6


4.1.2

1.

1

2

3

4

5


4.1.2

Fe-Fe3C


Fe-Fe3C:

1148

LwC4.30% Ld wC4.30%AwC2.11%+Fe3C 4-2

1148

LwC4.30% LdwC4.30%4-3

727

AwC0.77% PwC0.77%FwC0.021 8% +Fe3C 4-4

727

AwC0.77% PwC0.77%4-5


Fe-Fe3C:

Fe-Fe3C:

Fe-Fe3C12

5;5;2


(2)

Fe-Fe3CwC:

: wC 0.021 8%

:0.021 8%< wC <2.11%

wC

0.021 8%< wC <0.77%;

wC=0.77%;

0.77%< wC <2.11%

:2.11% wC <6.69%

wC

2.11% wC <4.3%;

wC=4.3%;

4.3%< wC <6.69%


(3)Fe-Fe3C

Fe-Fe3C:

4-8 wC


: :

4-10 Fe-Fe3C


4-11 Fe-Fe3C


4.2

4-12


4.2.1

1.

4-13


2.

1

2

3

4

4-14


4.2.3

  • 1.

4-15


2.

1

2

3

4

:

:


3.

(1)

(2)

(3)


4.3

4.3.1

:

4-16

4-16


1.

4-17


2.

C:

(1)

(2)

(3)


4.3.2

4-18 CCCT


4.3.2

4-19


4.3.3

1.

(1)

(2)

:

;


(2)

4-20


2.

1

2

4-21

4-21


3.

1

2

3

:

:

:

:

:


4.4

4.4.1

;


1.


2.

1

2

3

4

5


4.4.2

Ac3(Accm)3050


1.

1

2

3

2.

1

2

3


4.4.3

1.

Ac3Ac1()

()


(1)

4-22


(2)

:

;

4-23


4-24 AB 4-24BC 4-24 CD

4-24


:

:

:

:


(3)

:

:

:

:

:

:

:

4-25


2.


4.4.4

1.

Ac1

:;;


(1)

:

:

:

:

:

:



(2)


4-26


4-27


1

:

:

:

2

:

2.


4.5.1

1.

(1)

4.5

4-28


(2)


(4)

:

:

:

:

:

4-29


(5)

:

:

:


2.

(1)

(2)

4-30

1;2;3;4


4.5.2

1.

(1)

(2)

2.

(1)

(2)

(3)

:

:

+

;

+++


()4-31

4-31


3.(1) (2) (3) (4) 4-32 4.(1) (2) 5.(1) (2) (3)


3.

1

2

3

4 4-32

4.

1

2

5.

1

2

3

4-32


4-1 ?

4-2 Fe-Fe3C?

4-3 e-Fe3C

4-4 ??

4-5 ?

4-6 ??

4-7 ??

4-8 ??

4-9 ?

4-10


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