![[MAP Logo]](https://www.phase-trans.msm.cam.ac.uk/map/maplogo1.gif)
Materials Algorithms Project
Program Library
Subroutine MAP_STEEL_TEXTURE
- Provenance of code.
- Purpose of code.
- Specification.
- Description of subroutine's operation.
- References.
- Parameter descriptions.
- Error indicators.
- Accuracy estimate.
- Any additional information.
- Example of code
- Auxiliary subroutines required.
- Keywords.
- Download source code.
- Links.
Saurabh Kundu and H. K. D. H. Bhadeshia
Materials Science and Metallurgy, University of Cambridge, U. K.
E-mail: sk459@cam.ac.uk
Added to MAP: September, 2006.
Top | Next
Calculation of the crystallographic texture obtained when austenite transforms into martensite. The austenite itself can be textured.
Top | Next | Prev
Top | Next | Prev
This program has the inputs consisting of the habit planes, displacement direction and the crystallographic orientation (gamma-J-alpha).
- It first calculates the angle theta (between applied stress and habit plane normal and beta (between the maximum shear stress and the shear stress component resolved on the habit plane).
- Then it calculates the mechanical free energy available for each martensite variant.
- It also measures the angle between trace of habit plane on the plane of observations with the applied stress direction. It must be noted that by default the sample X-Y plane is taken to be the plane of observations.
- The plot is made with respect to the principle sample axis which are taken as (100),(010) and (001)
- This program plots the martensite pole figure and also the pole figure for the habit planes active.
- User can plot as many variants as desired.
Inputs when running the program
IF AUSTENITE PUT 0 IF FERRITE PUT 1:
1
WHAT IS THE STARTING TEXTURE OF AUSTENITE:
0=RANDOM
1=COPPER
2=BRASS
3=GOSS
4=CUBE
5={110}<111>
6=MIXTURE
3
HOW MANY VARIANTS WORKING?
8
FIRST ELEMENT OF THE STRESS TENSOR:
200.0
FOR (100) POLE FIG PUT 100 :
FOR (111) POLE FIG PUT 111 :
FOR (110) POLE FIG PUT 110 :
100
HOW MANY GRAINS?
500
Name
crystal_habit_poly.for
This is a source code of this program. For the execution, it needs to be compiled.
compile example :
g77 crystal_habit_poly.for -o name.out
Top | Next | Prev
Top | Next | Prev
- HABIT# - double precision array of dimension 24X3, # represents numbers.
- Matrix that stores 24 habit planes.
- DIRECTION# - Double precision array of dimension 24X3
- Matrix that stores 24 displacement directions for 24 variants of martensite.
- GM_J_AL# - Double precision array of dimension 72X3.
- It contains 24 matrix representing orientation relationship between martensite and austenite, following Bowles and MacKenzie notation can be written as (gamma J alpha).
- AL_J_GM# - Double precision array of dimension 72X3.
- It contains 24 matrix representing orientation relationship between martensite and austenite, following Bowles and MacKenzie notation can be written as (alpha J gamma).
- AL# - Double precision array of dimension 30X3.
- It stores all the plane indices for plotting pole figure.
- DEF_MAT# - Double precision array of dimension 3X3.
- DEF_MAT# This matrix stores stress tensor of the applied stress in the crystal axis.
- STRESS_TENSOR - Double precision array of dimension 3X3.
- Matrix represents the stress tensor in trhe sample axis.
- TRANS_MATRIX - Double precision array of dimension 3X3.
- Rotational matrix represnting the orientation relationship between any austenite grain with the sample axis.
- X_ST, Y_ST - DOUBLE PRECISION
- X and Y corordinate of any point in the pole figure.
-
Top | Next | Prev
None.
Top | Next | Prev
No information.
Top | Next | Prev
None.
Top | Next | Prev
1. Program Compile
g77 [sourcecode name] -o [executable file name]
2. Program menu
3. Program data
Auto generated.
4. Program results
Top | Next | Prev
No auxiliary routines
Top | Next | Prev
Transformation texture, martensite, stainless steels, crysttalography
Top | Next | Prev
Download source code
Top | Prev
MAP originated from a joint project of the National Physical Laboratory and the University of Cambridge.
Top | MAP Homepage