PSI - Issue 59

Oleh Yasniy et al. / Procedia Structural Integrity 59 (2024) 271–278 Author name / Structural Integrity Procedia 00 (2023) 000 – 000

273



σ

σ р (α і+1 )

σ р (α і )

σ s

σ p

Δε(α і )

  =1,6 MPa/s

Δσ і

Δε е і

t

ε

a)

b)

Fig. 1. Scheme of soft type of loading in experiments on a uniaxial tension (a) and the corresponding deformation diagram of the AMg6 alloy (b).

10 12 14 16 18 20 22 n(  i ),%

 13

 12

 14

 11

 10

0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 0 2 4 6 8  9  8  7  6  5  4  3  2  1  15



a)

b)

Fig. 2. The microstructure of AMg6 alloy: a - the destruction of dispersed inclusions after plastic deformation in the longitudinal direction; × 30000, b - the histogram of the number of dispersoids n in the initial state, depending on the α shape coefficient.

Based on the assumption that jump-like tension deformation is caused by the cracking of dispersoids in the volume of the material, techniques have been proposed to predict the initiation and magnitude of jump-like