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Subroutine MAP_CRYSTAL_NOTAT1

Provenance of code.
Purpose of code.
Specification.
Description of subroutine's operation.
References.
Parameter descriptions.
Error indicators.
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Example of code
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Provenance of Source Code

H.K.D.H. Bhadeshia,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.

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Purpose

To convert from four index notation to three index notation for a hexagonal lattice.

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Specification

Language:	FORTRAN
Product form:	Source code

SUBROUTINE MAP_CRYSTAL_NOTAT1(U, V, T, W, JR2, U1, U2, U3)

REAL U, V, T, W, U1, U2, U3

INTEGER JR2

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MAP_CRYSTAL_NOTAT1 converts from four index notation to three index notation for the hexagonal lattice system. If the components in four index notation are U,V,T,W, then the components in three index notation are given by:-

U1 = U - T, U2 = V - T, U3 = W, in real space, or

U1 = U, U2 = V, U3 = W, in reciprocal space.

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References

Microstructural Characterisation of High Temperature Materials, ed. E. Metcalfe, Institute of Metals, London, 1988, (page 33, Table 3).

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Parameters

Input parameters

U,V,T,W - reals: U,V,T,W are the components in four index notation.
JR2 - integer: JR2 = 0 if the components are in real space, JR2 = 1 if they are in reciprocal space.

Output parameters

U1,U2,U3 - reals: U1,U2,U3 are the components in three index notation.

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Error Indicators

None.

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Accuracy

No information supplied.

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Further Comments

None.

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Example

1. Program text

       REAL U, V, T, W, U1, U2, U3
       INTEGER JR2
       READ (5,*) U, V, T, W
       READ (5,*) JR2
       CALL MAP_CRYSTAL_NOTAT1(U, V, T, W, JR2, U1, U2, U3)
       WRITE (6,*) U1, U2, U3
       STOP
       END