PSI - Issue 6

S.A. Atroshenko et al. / Procedia Structural Integrity 6 (2017) 190–195 Author name / Structural Integrity Procedia 00 (2017) 000 – 000

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Fig. 3. Dependence of sample mass change on particle velocity

Fig. 4. Dependence of samples’ surface roughness on particle velocity

As can be seen from figure 4, surface roughness is almost equal for all samples in all testing regimes. The HPT processed samples demonstrate the highest mass loss for the 50 m/s air flow speed, while mass loss of the initial coarse-grained alloy is the lowest. HPT and ECAP samples exhibit almost equal results in terms of mass degradation for the 100 m/s air flow regime, which are lower comparing to the initial alloy. For higher velocities of the air flow difference between all states of the alloy, including the initial one, becomes negligible.