Volume fraction of multiple phases

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SUMMARY

The discussion centers on analyzing the volume fraction of multiple phases in an Inconel 718 (In17) alloy using Scanning Electron Microscopy (SEM) and image analysis software. James, a final year project student, struggles to identify four distinct phases due to limitations in existing software, which typically accommodates only two phases. He mentions using ImageJ and EDSD (Energy Dispersive Spectroscopy Detector) to enhance phase detection, particularly focusing on the expected increase in delta and gamma prime phases while observing a decrease in laves phase during heat treatment.

PREREQUISITES
  • Understanding of Inconel 718 alloy properties
  • Familiarity with Scanning Electron Microscopy (SEM) techniques
  • Knowledge of Energy Dispersive Spectroscopy (EDS) for phase identification
  • Experience with image analysis software, specifically ImageJ
NEXT STEPS
  • Research advanced image analysis techniques in ImageJ for multi-phase detection
  • Explore EDSD methods for enhanced phase characterization in alloys
  • Investigate heat treatment effects on Inconel 718 microstructure
  • Learn about phase quantification methods in metallography
USEFUL FOR

This discussion is beneficial for materials scientists, metallurgists, and students focusing on phase analysis in alloys, particularly those working with Inconel 718 and utilizing SEM and image analysis tools.

jblakes
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Afternoon all,

Hopefully somebody can help me, I'm doing my final year project and it's looking at the effect of heat treatment on in17, when I run an XRD scan I found that I all the phases sort of hid behind the matrix and so can't really make them out.

So I've been looking at using the SEM images I have and using imagen or similar to find out VF, problem is I have at least Four phases within the material. Does anybody know a program that you can work out the four phases? Most seem to only allow two as it just identifies white/grey not the different shapes of grey.

Kind regards
James
 
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Are you able to produce a series of cross sections in the material? Does the surface of your sample have a different composition than the interior?

Might find something here.
 
Last edited:
Yeah I can do, I currently have a sample that's 20x40mm.

The treatment is for homonegisation of the material so should be the same, over time I am expecting to see an increase in delta phases and gamma prime and a decrease in laves phase.

I have tried XRD but for some reason only showed the matrix peaks even though there should be 15/20% of at least two other phase. Gonna try edsd and hope that picks it up.

Anybody used imageJ? Can you find more than two phases with the colour changes?

Regards James
 

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