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1篇 您的检索式:作者名="Nisith Geetha"
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1Internal friction behavior of Zr_(59)Fe_(18)Al_(10)Ni_(10)Nb_(3)metallic glass under different aging temperatures显示文摘We investigate the role of aging temperature on relaxation of internal friction in Zr_(59)Fe_(18)Al_(10)Ni_(10)Nb_(3)metallic glass.For this purpose,dynamic mechanical analysis with different annealing temperatures and frequency values is applied.The results indicate that the aging process leads to decrease in the dissipated energy in the temperature range of glass transition.It is also found that the increase in applied frequency weakens the loss factor intensity in the metallic glass.Moreover,the Kohlrausch-Williams-Watts(KWW)equation is used to evaluate the evolution of internal friction during the aging process.According to the results,higher annealing temperature will make the primary internal friction in the material increase;however,a sharp decline is observed with the time.The drop in characteristic time of internal friction is also closely correlated to the rate of atomic rearrangement under the dynamic excitation so that at higher annealing temperatures,the driving force for the collaborative movement of atoms is easily provided and the mean relaxation time significantly decreases.Israa Faisal Ghazi Israa Meften Hashim Aravindhan Surendar Nalbiy Salikhovich Tuguz Aseel MAljeboree Ayad FAlkaim Nisith Geetha 2021Chinese Physics B2021,30,2:0
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