Crack Paths 2009

F

F

II

f

F I

f

II

f

(a)

II x

x

F

(b)

I

h

θ

f

F

f

(c)

0

1

2

3

4

5

6

Figure 3. Evolution of crack paths with cold drawing (HACenvironmental conditions):

(a) general appearance of the fracture surfaces; (b) geometric parameters describing the

crack path; (c) evolution of fracture profiles; f: fatigue crack growth; I: modeI cracking;

II: mixed mode cracking; F: final fracture by cleavage at the critical situation.

F

II

F

II

f

F

f

I

I f

(a)

II x x I

x

F

I

θ

h

f

f

F

(b)

(c)

0

1

2

3

4

5

6

Figure 4. Evolution of crack paths with cold drawing (LADenvironmental conditions):

(a) general appearance of the fracture surfaces; (b) geometric parameters describing the

crack path; (c) evolution of fracture profiles; f: fatigue crack growth; I: modeI cracking;

II: mixed mode cracking; F: final fracture by cleavage at the critical situation.

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