![]() |
This is a naval brass composed of copper, 39% zinc, and 1%
tin. It failed during deformation processing. Why? Look at all four photomicrographs before answering. The upper pair show the outer edge at 100X ... |
![]() |
... and at 500X. |
![]() |
The lower pair, also at 100X ... |
![]() |
... and at 500X, were taken near the
center of the piece. The manufacturer was "stuck" with many pieces which were too brittle to be used. He wanted to "rescue" them from the scrap barrel. What would you have done ? Again, pause a while before looking at his solution. |
The fourth
specimen demonstrates an instance of chemically
induced failure. |