PSI - Issue 2_A

S. Henschel et al. / Procedia Structural Integrity 2 (2016) 358–365

362

S. Henschel et al. / Structural Integrity Procedia 00 (2016) 000–000

5

10 12 14

600

1 1 h/H: 0.0 0.25 0.5 0.75 1.0

0 0.5 1 r/R = 1

1

1

0 0.5 1 r/R = 1

400

90 %

0 2 4 6 8

90 %

200

ECD / µm

10 % 50 %

50 % 10 %

Particle distance / µm

0

0

90

135

180

0

90

135

180

Angle ϕ / °

Angle ϕ / °

a)

b)

Fig. 3. Distribution of alumina inclusions (inclusions near the crucible were neglected). (a) Distribution of ECD; (b) Distribution of distances.

10 12 14

200

150

0 2 4 6 8

100

50

ECD / µm

Particle distance / µm

0

0

90

135

180

0

90

135

180

a)

Angle / °

b)

Angle / °

Fig. 4. Distribution of MnS inclusions (inclusions near the crucible were neglected). (a) Distribution of ECD; (b) Distribution of distances. The definition of symbols is the same as in Fig. 3.

10

h/H 0.3 0.5 0.7 R m R p0.2

1100

20

5 Elongation A 5 / %

1050

1000

10

h/H A 5 Z 0.7 0.5 0.3

Strength / MPa

950

Reduction of area Z / %

0.0 0.2 0.4 0.6 0.8 1.0 0 0

0.0 0.2 0.4 0.6 0.8 1.0

a)

b)

Location r/R

Location r/R

Fig. 5. Dependence of R p0 . 2 and R m (a), and A 5 and Z (b) on the position within the cylinder. Solid / open symbols: sample direction verti cal / horizontal. T = 20 °C.

inclusions were significantly smaller. The measurement of small distances between the MnS inclusions was attributed to Type II MnS (dendritic shape) which were cut at an arbitrary plane.

3.2. Mechanical properties

The e ff ect of the position on the strength and ductility is presented in Fig. 5. In Fig. 5a, it can be seen that R p0 . 2