Sub-grain calculation and plotting in MTEX?

[MTEXNewbie]

Hi all,

Is it possible to calculate sub-grain (or cell) and plot them in MTEX, if yes then I would really appreciate some help.

My material is 316L steel, so it's just a single phase (FCC).

Thank you.

[Rüdiger Kilian]

Hi,
how you specify a subgrain? An area enclosed also by a certain low angle boundaries or e.g. spacing between those or any other measure?
Cheers,
Rüdiger

[Hamid]

Dear Rüdiger,

 

I also had a similar question.

I would like to know, how I can calculate the diameter of sub-grains. The criteria for subgrain is to have at least one low angle boundary 2-10 deg.

 

Thank you,

Hamid 

[Rüdiger Kilian]

Hi Hamid,
there are many different measures to derive a "diameter", i.e. the 2*the area_equivalent_radius or derived from line intercepts etc. . To get the area equivalent radius, obviously the grain must have a well defined area - it must be complete surrounded by a closed polygon representing the boundary. For low angle boundaries, this might often not be the case.
You could also think about grain boundary density as a measure of (low angle) boundaries in case of very complicated grain shapes or non-closed boundaries.

Obviously, any of these numbers will vary as a function of your angular lower and upper threshold.

Cheers,
Rüdiger

________________________________________
From: mtex...@googlegroups.com <mtex...@googlegroups.com> on behalf of Hamid <soleyma...@gmail.com>
Sent: Wednesday, March 20, 2019 4:59:25 AM
To: MTEX
Subject: {MTEX} Re: Sub-grain calculation and plotting in MTEX?

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