# Talk:Nomenclature/Archive 1

## Overlap

What should be done about $\sigma$? --Rick 12:43, 15 June 2007 (CDT)

And K? Where did this first get used as partitioning ratio & do others use something else? --Rick 13:48, 15 June 2007 (CDT)
Resolved. --Chris Booth 11:57, 19 June 2007 (CDT)

## Stereology

We could have consistent and logical notation for ratios of any combination of volume/area/number/lengths if we adopt stereological convetnions of $X_Y$, where X is the numerator & Y is the denominator & they can be replaced by any combination of N, A, N, or L. What about adopting, for example, $V_V$ for volume fraction? --Rick 13:21, 15 June 2007 (CDT)

No. Because Voorhees doesn't do this.--Chris Booth 11:58, 19 June 2007 (CDT)

## Number Density Coarsening Constant

Chris uses $A_{KV}$ as the prefactor in the number density coarsening equation. A has been used as a "throw-away" prefactor in the past (for creep, conductivity, etc.--any place where we don't care much about it). Since (as far as I know) we invented this notation, do we want to assign something more permanent? --Rick 13:55, 15 June 2007 (CDT)

It is best to eliminate $A_{KV}$ and simply use the notation given by Voorhees in his coarsening equations. --Chris

## Moduli

All have latin and greek symbols:

• Bulk modulus: K, $\chi$
• Shear modulus: G, $\mu$
• Young's elastic modulus: E, $\gamma$

There is more overlap in the latin (K being coarsening a coefficient & G being Gibbs Free Energy). While there's a wrinkle that some popular alloy systems hava a gamma pgase, perhaps we should use greek for ALL of these? --Rick 14:33, 15 June 2007 (CDT)

We'll use latin for everything after removing some overlapping notation. --Chris Booth 11:51, 19 June 2007 (CDT)

## Other nomenclature

While ppt=precipitate; mat=matrix; int=interface, this notation will generally be expanded by DNS for legibility. --Chris Booth 11:34, 19 June 2007 (CDT)

APFIM = atom-probe field-ion microscopy. However, this is essentially the same as APT & won't be heavily used. --Chris Booth 11:36, 19 June 2007 (CDT)

## Atomic volume

RPK uses Omega for atomic volume of alloy, but V_a is used (particularly for phase-specific volume V_a^i). We should resolve this. --Chris Booth 11:51, 19 June 2007 (CDT)

The group has published extensively using Omega for atomic volume. It is also the notation used in Miller's book. -- Prakash 1:48 19 June 2007
Have we had papers that combine both $V_a$ and $\Omega$ notation? If not, I think it might make since to pick one and stick with it (using superscripts/subscripts in the case of molar volumes or in the case of particular element(s)). --Rick 14:46, 20 June 2007 (CDT)
Consensus was that RPK could use omega, but that we'd migrate to V. --Rick 18:04, 28 June 2007 (CDT)

## N_atoms

RPK uses $N_{atoms}$ for number of atoms. In what context? How is it different than $N_{0}$ or $N_{i,j,k}$ (for types of atoms) --Chris Booth 11:44, 19 June 2007 (CDT)

$N_{atoms}$ is a user defined parameter used in the envelope method. It goes along with $d_{max}$. It is not related to $N_{0}$ nor $N_{i,j,k}$. -- Prakash 1:44, 19 June 2007 (CDT)
Thanks for the explanation. Is there a way to make this clearer? something that contains "cluster" or "minimum?" --Rick 14:39, 20 June 2007 (CDT)
Consensus was to use N_min --Rick 18:06, 28 June 2007 (CDT)