# Talk:Nomenclature/Archive 1

## Contents

## Overlap

What should be done about <math>\sigma</math>? --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 <math>X_Y</math>, 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, <math>V_V</math> 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 <math>A_{KV}</math> 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 <math>A_{KV}</math> and simply use the notation given by Voorhees in his coarsening equations. --Chris

## Moduli

All have latin and greek symbols:

- Bulk modulus: K, <math>\chi</math>
- Shear modulus: G, <math>\mu</math>
- Young's elastic modulus: E, <math>\gamma</math>

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 <math>V_a</math> and <math>\Omega</math> 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 <math>N_{atoms}</math> for number of atoms. In what context? How is it different than <math>N_{0}</math> or <math>N_{i,j,k}</math> (for types of atoms) --Chris Booth 11:44, 19 June 2007 (CDT)

- <math>N_{atoms}</math> is a user defined parameter used in the envelope method. It goes along with <math>d_{max}</math>. It is not related to <math>N_{0}</math> nor <math>N_{i,j,k}</math>. -- 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)