FIELD: deformation-heat treatment of metal with change of its physical and mechanical properties, possibly in machine engineering, manufacture of air craft engines and in medicine for making semi-finished products of titanium.
SUBSTANCE: method comprises steps of intensive plastic deformation in mutually crossing ducts and further mechanical working of blank. Mechanical working is realized by multiple rolling or extrusion at 20°C at reduction degree in one pass causing no main cracking and material destruction. Number of passes of rolling or extrusion provides final deformation degree 80- 90 %.
EFFECT: manufacture of ultra-fine grain titanium sheet blanks with improved fatigue limit value at the same strength and working ductility.
1 dwg, 1 ex
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