PSI - Issue 6

Svetlana Atroshenko et al. / Procedia Structural Integrity 6 (2017) 259–264 Author me / Structural Integrity Procedia 00 (2017) 000 – 000

262 4

1- 

86 88 90 92 94 96 98 100

Mg steel Ti

B



0.02 0.04 0.06 0.08 0.10 0.12 0.14

2 1 . 10    с 

Fig.3. Dependences of the latent energy on deformation in various metals at the strain rate

.

3.2. Dynamic deformation

Figure 4 shows the temporal profile of the dependence of the free surface velocity when a sample of magnesium alloy with a thickness h = 4.15 mm is loaded using electrical explosion of conductors.

v fs ,m/s

250

200

150

100

50

0

4,5x10 -6

5,0x10 -6

5,5x10 -6

Time,s

Fig.4 Temporal profile of the free surface velocity for magnesium alloy.

Table 1. Microstrucutre characteristics. Material state

Grain size, μm

HV av , MPa

14,6 (9 μm - 23 μm) 8,3 (1,7 μm - 27,2 μm) 5,7 (2,1 μm - 17,9 μm)

107 (97 – 115) 67 (61 - 79) 62,5 (55 – 70)

Initial state

N1 (shock loading) N2 (shock loading)