EXPERIMENTAL AND THEORETICAL STUDY ON NON-LINEAR ANELASTIC INTERNAL FRICTION
GE Tingsui (T S. KE); (Laboratory of Internal Friction and Defects in Solinds; Institute of Solid State Physics; Chinese Academy of Sciences; Hefei 230031)
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GE Tingsui (T S. KE); (Laboratory of Internal Friction and Defects in Solinds; Institute of Solid State Physics; Chinese Academy of Sciences; Hefei 230031). EXPERIMENTAL AND THEORETICAL STUDY ON NON-LINEAR ANELASTIC INTERNAL FRICTION. Acta Metall Sin, 1997, 33(1): 9-21.
Abstract A critical review is made on the recent development of the research on non-linear anelastic internal friction. The chief difference between the non-linear anelastic internal friction and its linear counter part is that in the linear case only internal friction peaks versus temperature and versus frequency appear, whereas in the non-linear case appears also internal friction peak versus strain amplitude within the temperature region of the internal friction peak versus temperature,Since the discovery of the non-linear anelastic internal friction in 1950, two systems exhibitiing non-linear anelastic internal frictions have been found and investigated: (1) The interacti0n between point defects (vacancies and solute atoms) and dislocations. A series of experimental results have been obtained concerning this subject, appropriate physical models have been suggested and priliminary theoretical analysis have been attached. (2) The interaction between dislocation and grain boundaries (bamboo grain boundary and bicrystals). Some experimental results have been obtained concerening which further experimental and theoretical studies are requird.
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