Introduction
Experimental Procedure
Element | C | Si | Mn | Cr | Ni | Mo | Fe |
---|---|---|---|---|---|---|---|
High-Si hypereutectoid | 1.0 | 1.30 | 0.45 | 1.50 | 0.20 | 0.28 | Bal. |
AISI 52100 | 1.0 | 0.08 | 0.26 | 1.5 | 0.1 | 0.05 | Bal. |
Experimental Results and Discussion
Microstructural Characterization
Temperature (°C) | 250 | 300 | 350 |
---|---|---|---|
Holding time (h) | 5 | 1.5 | 1 |
M
s (°C) | 54 ± 5 | 66 ± 5 | 92 ± 5 |
Temperature (°C) | 250 | 300 | 350 |
---|---|---|---|
Carbon content of RA (wt.%) | 1.6 ± 0.1 | 1.5 ± 0.1 | 1.3 ± 0.1 |
Fraction of RA (vol%) | 25 ± 2 | 45 ± 2 | 66 ± 2 |
Bainite Transformation Characteristic
OR | Bain | K-S | N-W | Pitsch |
---|---|---|---|---|
Plane |
\( \{ 010\} \gamma //\{ 010\} \alpha \)
|
\( \{ 111\} \gamma //\{ 110\} \alpha \)
|
\( \{ 111\} \gamma //\{ 110\} \alpha \)
|
\( \{ 001\} \gamma //\{ \overline{1} 01\} \alpha \)
|
Direction |
\( < 001 > \gamma // < 101 > \alpha \)
|
\( < 1\overline{1} 0 > \gamma // < 1\overline{1} 1 > \alpha \)
|
\( < 0\overline{1} 1 > \gamma // < 001 > \alpha \)
|
\( < 110 > \gamma // < 111 > \alpha \)
|