Creep-related micromechanical behavior of zirconia-based ceramics investigated by nanoindentation

Liu, Erqiang; Wang, Hefeng; Xiao, Gesheng; Gao, Yuan; Shu, Xuefeng

doi:10.1016/j.ceramint.2015.06.136

Cited by 19 publications

(7 citation statements)

References 31 publications

(48 reference statements)

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“…These results prove that nanoindentation is an effective technique in revealing the creep mechanisms of engineering materials (Gan and Tomar, 2010;Su et al, 2013;Zhang et al, 2017b). As nanoindentation creep is performed immediately following a loading stage during which the maximum creep load is reached at different loading rates, the loading rate-dependent creep behaviors of various materials are systematically characterized to understand their plasticity mechanisms (Lee et al, 2016;Liu et al, 2015;Tehrani et al, 2011;Wang et al, 2010Wang et al, , 2018b. Enlightened by the nanoindentation creep technique, since the deformation in the creep stage of normal nanoindentation with different loading rates adopted in the loading stage is believed to stem from the "delayed plasticity" from the loading stage of nanoindentation (Klaumünzer et al, 2011;Schuh and Nieh, 2003), revealing the origin and the dynamics of the deformation in the creep stage of nanoindentation with different loading rates adopted in the loading stage should also bring out new understandings on the plasticity mechanisms of engineering materials.…”

mentioning

confidence: 69%

On the origin of softening in the plastic deformation of metallic glasses

Zhang

Chen

2019

International Journal of Plasticity

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confidence: 69%

On the origin of softening in the plastic deformation of metallic glasses

Zhang

Chen

2019

International Journal of Plasticity

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“…Ghost and Chokshi [74] studied the creep of nanocrystalline 3Y-TZP who obtained results indicating the same deformation mechanism as for micro-sized materials. Liu et al [75] examined creep behavior of zirconia stabilized with 2.5 mol%. They postulated the grain boundary sliding accompanied by intergranular dislocation due to existence of amorphous phases.…”

Section: Creep Of Polycrystalline Zirconiamentioning

confidence: 99%

High Temperature Creep of Metal Oxides

Schneider¹,

Rękas²

2018

Creep

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This chapter presents a comprehensive review of the creep technique used for the study of defect structure and diffusion in metal oxides, both single crystals and ceramics. At high temperatures, the creep rate is proportional to the diffusion coefficient of the slowest species in solid compounds, whatever deformation mechanisms are present (Nabarro viscous creep, recovery creep or pure climb creep). The creep rate dependence on deviation from stoichiometry can be determined from this diffusion. In the case of metal oxides, the departure from stoichiometry is controlled by the oxygen activity which usually is identified with oxygen partial pressure, p O 2 . The p O 2 dependence of the creep rate provides direct information about the nature of minority point defects. On the other hand, studies of the temperature dependency of the creep rate inform us about the activation energy of the diffusion coefficient.This review focuses primarily on the creep behavior of transition metal oxides such as Ni 1Ày O, Co 1Ày O, Fe 1Ày O exhibiting disorder in metal sublattice, as well as ZrO 2Àx with majority defects in oxygen sublattice. The advantage of these studies is determination of both defect structure and diffusion coefficients of minority defects namely in oxygen sublattice in iron-triad oxides and in zirconium ZrO 2 sublattice.

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“…Recently, the holding states of nanoindentation experiments have been widely used to analyze the time-dependent deformations of biomaterials [10], metals and alloys [11,12], ceramics [13,14], polymers and composites [15][16][17][18], types of cement [19,20], and even crystals [21,22]. Besides, the estimation of the macrofracture toughness of minerals and rocks is given in [23], while the analysis of the micromechanical properties of mineral crystal grains is becoming more and more extensive [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation

et al. 2022

Advances in Civil Engineering

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Recently, the holding states of nanoindentation experiments have been widely used to analyze the time-dependent deformations of various rocks, and the dynamic mechanical analysis (DMA) method seems to be more applicable than the quasi-static mechanical analysis (QMA) method when the influence of creep deformation on mechanical properties of rocks was analyzed. However, the former method causes an abnormal behavior during the creep holding stages that was not clearly interpreted.2 Consequently, in this study, by amplifying the oscillation of the DMA method, the mechanical mechanism of this phenomenon was explained. Experimental results confirm that the rheological deformation of rocks consists of the creep deformation (depth increasing) and the elastic aftereffect deformation (depth decreasing) during the creep time with small oscillation; once the elastic aftereffect deformation exceeds the creep deformation, the abnormal behavior can be observed. Besides, some other abnormal behaviors might be found for other rock materials when the DMA method with different oscillations is used, which illustrates the complexity and limitation of applying this method. Thus, the QMA method was recommended to investigate the above questions in future studies.

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Creep-related micromechanical behavior of zirconia-based ceramics investigated by nanoindentation

Cited by 19 publications

References 31 publications

On the origin of softening in the plastic deformation of metallic glasses

On the origin of softening in the plastic deformation of metallic glasses

High Temperature Creep of Metal Oxides

Explanation on the Abnormal Behavior during the Nanoindentation Holding Stages by Amplifying Oscillation

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