The Effect of Subsequent Stress-Induced Martensite Aging on the Viscoelastic Properties of Aged NiTiHf Polycrystals Academic Article uri icon

abstract

  • This study investigated the effect of stress-induced martensite aging under tensile and compressive stresses on the functional and viscoelastic properties in Ni50.3Ti32.2Hf17.5 polycrystals containing dispersed H-phase particles up to 70 nm in size obtained by preliminary austenite aging at 873 K for 3 h. It was found that stress-induced martensite aging at 428 K for 12 h results in the appearance of a two-way shape memory effect of 0.5% in compression and +1.8% in tension. Moreover, a significant change in viscoelastic properties can be observed: an increase in internal friction (by 25%) and a change in elastic modulus in tensile samples. The increase in internal friction during martensitic transformation after stress-induced martensite aging is associated with the oriented growth of thermal-induced martensite. After stress-induced martensite aging, the elastic modulus of martensite (EM) increased by 8 GPa, and the elastic modulus of austenite (EA) decreased by 8 GPa. It was shown that stress-induced martensite aging strongly affects the functional and viscoelastic properties of material and can be used to control them.

published proceedings

  • METALS

author list (cited authors)

  • Tagiltsev, A. I., Panchenko, E. Y., Timofeeva, E. E., Chumlyakov, Y. I., Marchenko, E. S., & Karaman, I.

citation count

  • 0

complete list of authors

  • Tagiltsev, Anton I||Panchenko, Elena Y||Timofeeva, Ekaterina E||Chumlyakov, Yuriy I||Marchenko, Ekaterina S||Karaman, Ibrahim

publication date

  • November 2021

publisher

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