Examination of Two 5/8 Inch Disston Face Hardened Armor Plates,
WATERTOWN ARSENAL MA
Pagination or Media Count:
The purpose of this investigation was to determine the difference in metallurgical properties of a good quality plate made of electric steel and a poor quality plate made of open-hearth steel. Both plates were made of the same composition. They were of the Standard Chromium-Molybdenum-Vanadium carburizing grade. The failure of the open-hearth steel plate was due chiefly to segregations of nonmetallic inclusions in low carbon bands laminations in the steel base. Furthermore, pronounced grain boundary segregates in the carbonized case may have contributed to the failure of this plate. The plate made of electric steel was relatively clean and had a fine uniform in the case and core.
- Metallurgy and Metallography