 |
|
|
|
|
|
|
|
|
|
|
|
|
| A scanning electron micrograph of the etched surface of the Titanic hull steel. | ||||||||||||
| METALLOGRAPHY CONT. | ||||||||||||
 |
||||||||||||
| The micrograph on the right was achieved using a scanning electron microscope. The surface of the Titanic hull steel was etched with 2% Nital as well as being thoroughly polished. The dark grey areas of the micrograph are ferrite. The very dark oval shaped structure is a particle of MnS, that was identified by energy-dispersive x-ray analysis. It is elongated in the direction of the banding, which suggests that the banding is a result of the hot rolling of the steel. Also visible in the micrograph are small non-metallic particles, some of the ferrite grain boundaries and pearlite colonies. |
||||||||||||
| The next section of this report is physical tests. This includes tensile testing and impact tests. To get to this section, click on the link below, or you can go back to the first page and click on the link there. | ||||||||||||
| Physical Tests | ||||||||||||