PSI - Issue 13

S.A. Atroshenko et al. / Procedia Structural Integrity 13 (2018) 1359–1361 Author name / Structural Integrity Procedia 00 (2018) 000–000

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The obtained results have good correlation with stacking fault energy. In addition, it is confirmed by the cross section microstructure investigations. Plastic deformation in AD1 aluminum alloy with high stacking fault energy occurs through mechanism of dislocation gliding. It is seen slip lines in its microstructure (Fig2e). In structure of Ti alloy it is seen a lot of twins (Fig.2f), which typical features for high strain-rate deformation. Similar features are present in copper samples after high speed erosion – it is seen twins (Fig.1h). As for EI-961 steel, mechanism of dynamic deformation of this metal is phase transformation. It is clearly seen martensite lamelias in structure of this steel after dynamic erosion.

Fig. 2. Cross-section microstructure after high-speed erosion 1) at the surface: a – AD1 aluminum alloy (x1000), b - Grade 5 Ti alloy (x1000), c – EI-961 steel (x1000), d – Cu (x1000) and 2) at the center of the sample: e - AD1 aluminum alloy (x1600), f - Grade 5 Ti alloy (x1000), EI-961 steel (x1000), h - Cu (x1000). Conclusion From above paper one can draw the following conclusion: It was established correspondence between SFE of close-packed metals and ductile component of the fracture surface after solid particle erosion. The smaller SFE the larger amount of viscous fracture on the fracture surface is observed. Acknowledgements This work was supported by the RSF (grant No. 17-11-01053). Additionally, the author S.A. Atroshenko received support for experiment from RFBR (project 16-01-00638-а), the author A.D. Evstifeev received support for experiment from RFBR (project 16-31-60003). References Petrov, Yu. V., Atroshenko, S. A., Kazarinov, N. A., Evstifeev A. D., Solov’ev, V. Yu. 2017. Dynamic Fracture of the Surface of an Aluminum Alloy under Conditions of High-Speed Erosion. Physics of the Solid State, 59 (4), 23–28. Evstifeev, A., Kazarinov, N., Petrov, Y., Witek, L., Bednarz, A. 2018. Experimental and theoretical analysis of solid particle erosion of a steel compressor blade based on incubation time concept. Engineering Failure Analysis, 87, 15-21 Atroshenko, S.A., Evstifeev, A.D., Kazarinov, N.A., Petrov, Yu.V., Valiev, R.Z. 2017. Behavior of the grade 5 titanium alloy in different structural states in conditions of high-speed erosion. Procedia Structural Integrity 6, 190–195. Hojjat Gholizadeh. The Influence of Alloying and Temperature on the Stacking-fault Energy of Iron-based Alloys. Dissertation, Montanuniversität Leoben, Leoben, May 2013, 193. Angyang, Yu. 2016, First principal calculations of stacking fault energy in titanium alloys. SCIREA Journal of Physics, 1(1), 1-10.