Graphite nodularity
Nodularity percentage and nodule count per mm2 for ductile and compacted graphite iron.
Example outputs shown for illustration. Numbers depend on your samples and protocol.
What you get
The measurement, today
Nodularity is judged by holding a polished section against reference photomicrographs. Two metallurgists reading the same field routinely disagree, and the count is an estimate.
What it costs
Nodularity sets the strength and ductility of a casting. A part graded acceptable by eye can sit below the mechanical spec, and the disagreement is only settled after a part fails.
From image to reviewed result
- 1
Image the section
Load a polished section at 100x, unetched, so graphite reads dark on light.
- 2
Segment the graphite
Every graphite particle is isolated from the matrix.
- 3
Classify by shape
Particles are sorted nodular or non-nodular by roundness.
- 4
Report the result
Nodularity percentage and nodule count per square millimetre follow with the size distribution.
Scope: Classifies graphite particles by shape and reports nodularity and count following ASTM A247. The nodularity percentage depends on the roundness cutoff; set it to your acceptance convention.
Related applications
Inclusion & content rating
Detect and classify inclusions, then rate content by type and severity across fields.
Grain size analysis
Average grain size and full distributions, traced automatically from etched micrographs.
Phase & microstructure fraction
Segment phases and constituents to quantify area fraction and spatial distribution.
Send a sample image and a measurement goal
We will show the closest ConductVision workflow and flag what needs custom validation for your images.
