Material Informatics Course project on process-structure-property linkages

1. Team Members
Akash Gupta
Dipen Patel

2.  Establish process-structure linkages for AM30 Magnesium alloy during channel-die
compression.
 These linkages will reveal the effect of process parameters like temperature,
strain rate and % strain on the evolution of texture during channel-die
compression.
 Source of Dataset - Orientation map datasets generated from EBSD test done on
channel die compressed samples are provided by Prof Haitham El Kadiri,
Mississippi State University

3.  Channel die tests allows the faces of the sample to remain plane (homogeneous
deformation) while being compressed and prevent any lateral spreading.
 EBSD datasets containing orientation maps are generated at different processing
conditions of temperature, strain rate and strain level
Temp(deg C) Strain rate (1/s)
Strain
0% 3% 6% 9% 18%
RT 1
0.1 1 1 1
0.01 1 1
0.001 1 1 1 1
Strain
0% 30% 80% 130% 180%
1
0.1 1 1
0.01 1 1 1
0.001 1 1 1
1
0.1 1 1 1
0.01 1 1 1 1
0.001 1 1 1
1
0.1 1 1 1
0.01 1 1 1
0.001 1 1 1
Total microstructures = 40
200
300
400
Schematic diagram of (a) assembled channel
die, and (b) various parts of channel die
Ref: Antonyraj, A., Marin, E., Ma, Q., Wang, P., Horstemeyer, M.,
& King, R. (Oct 2010). TMS 2011, California

4.  2-D pixel data containing
crystal orientations for Mg
alloy polycrystalline
material generated at
different processing
conditions.
300C EBSD
DATA
10-1
10-2
10-3
0% 80% 130% 180%

5.  Extracting orientations from .oim files and Image Segmentation
 Microstructure function – h (crystal orientations)
 Number of local states too high if we bin the microstructure using fundamental
zone for hexagonal(depends on bin size)
 Alternative approach is using GSH to generate n-point statistics