Forgeabilité des aciers inoxydables austéno-ferritiques

tel-00672279, version 1 - 21 Feb 2012
Chapter IV. STRAIN PARTITIONING 137
T = 850°C
T = 950°C
a)
b)
δ
D1_E
δ
γ
γ
100 μm
100 μm
εeq 0.0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
ε eq0.0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
Figure IV.37. Equivalent strain distribution maps of the equiaxed morphology: D1_E at T = 850 and
950°C for a 20% macroscopic thickness reduction; a) strain map at T = 850°C; b) strain map at T =
950°C. The equivalent strain map is superimposed with the undeformed microstructure to clearly
present where in the microstructure the strains are distributed. The loading direction corresponds to
the vertical axis.