Principles of Physical Mesomechanics or Nanostructural Fatigue of Metals. Part I. Model of Subsurface Fatigue Crack Nucleation in VT3-1 Titanium Alloy

Физическая мезомеханика 2010
A Shanyavskiy, Mukharbiy Banov, T Zaharova

In the work, we tested VT3-1 titanium alloy for fatigue in the transition region between surface and subsurface crack nucleation. In the tests, subsurface crack nucleation was recorded by the acoustic emission method. A model of the formation of a fracture nucleus and an initial fracture zone around the nucleus was proposed starting from the concept of compression of material and rotation of its volumes at the nanostructural level. The origination of an initial fracture facet was considered as saturation of slip planes with gases where superplasticity arises in a local material volume. The proposed model allows physical understanding of many hitherto inexplicable effects in the behavior of metals under cyclic loading.

Keywords
Fatigue, Subsurface crack, fractography, acoustic emission, meso- and nanoworld, titanium and high-resistant alloy, synergetics, partially closed system
Hyperlink
https://elibrary.ru/item.asp?id=13062121

Shanyavskiy, A., Banov, M., Zaharova, T. Principles of Physical Mesomechanics or Nanostructural Fatigue of Metals. Part I. Model of Subsurface Fatigue Crack Nucleation in VT3-1 Titanium Alloy. Физическая мезомеханика, 2010, Vol. 13, No. 1, pp.61-72. ISSN 1683-805X.

Publication language
Russian (ru)