1. Acoustic emission in hafnium under tensile deformation.
- Author
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Stoev, P., Starolat, M., Vasil'ev, A., Khovrich, S., and Kovtun, K.
- Subjects
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ACOUSTIC emission , *HAFNIUM , *DEFORMATIONS (Mechanics) , *MECHANICAL properties of metals , *FRACTURE mechanics , *ELASTOPLASTICITY , *STRAINS & stresses (Mechanics) , *ANNEALING of metals - Abstract
The paper addresses the dependence of acoustic emission produced in rolled hafnium GFÉ-1 under tensile deformation on the material's structural state. A correlation has been established between the material structure, the level of mechanical properties and the values of acoustic parameters. Acoustic emission in non-recrystallized hafnium under tensile deformation is recorded only at the stages that precede fracture. Upon recrystallization annealing at temperatures of 1123 and 1373 K acoustic emission occurs at all the stages of tensile deformation. The highest level of acoustic emission activity in hafnium is observed during the transition from elastic to elastic-plastic strain. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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