High Carbon Steel
sigmats=74,000 psi
Specimen broke in tension.
Click for larger image
Here is a large picture of an elongated dimple. (Bhattacharyya,
101-19b)
AISI 10B21 Steel
sigmats=218,000 psi
Specimen broken in tension
Click for larger image
The microvoid coalesence can be seen in the upper right corner.
(Bhattacharyya, 2-9)
Aluminum 2024 Alloy
sigmats=66,000 psi
Specimen broken in tension
Click for larger image
As before, several areas of microvoids can be seen. (Bhattacharyya,
102-10)
Titanium Alloy
sigmats=153,00
Specimen broken in high cycle fatigue.
Click for larger image
Equiaxed and elongated dimples are seen
above. (Bhattacharyya,137-15)
Nitralloy 135M
sigmats=146,000 psi
Specimen broken in tension
Click for larger image
Several areas of microvoid coalesence is seen in this picture.
(Bhattacharyya, 52-17)
More pictures and information on this topic
Submitted by Ron Halahan
Virginia Tech Materials Science and Engineering
http://www.eng.vt.edu/eng/materials/classes/MSE2094_NoteBook/97ClassProj/exper/halahan/www/microvd.html
Last updated: 4/25/97