St. Petersburg Polytechnic University Journal: Physics and Mathematics Научно-технические ведомости СПбГПУ. Физико-математические науки 2304-9782, 2618-8686, 2405-7223 22 Shock deformation of ultrafine-grained materials under intensive plastic deformation Особенности ударного разрушения ультрамелкозернистых материалов, полученных при интенсивной пластической деформации Klevtsov G. Ganeev A.V. Semyonova I. Valiyev R.Z. 10 12 2013 4 182 1 182 189

Regularities of impact fracture of materials with BCC lattice structure (steel 10), FCC lattice structure (aluminum alloy AK4-1) and hexagonal lattice structure (titan Grade 4) in the initial state and after ECAP in sub microcrystal state have been established. Impact tests were conducted in the wide temperature interval.. It was shown, the crystall lattice tipe of ultra grained materials determine the character of the impact strength temperature dependence and also fracture mechanism.

 strength fracture mechanism impact strength structure equal canal angular pressing (ECAP) sub microcrystal state