Determination of mechanical properties of pure zirconium processed by surface severe plastic deformation through nanoindentation

Wang, Yaomian; Zhuang, Wei; Yang, Huanping; Zhang, Cong-Hui

doi:10.1007/s12598-019-01302-6

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…Shot peening effectively increases the yield strength and tensile strength of the samples. Comparing with the original sample's 261 MPa, the tensile strength increases to a maximum of about 417 MPa, while the elongation decreases to varying degrees with the increase in tensile strength [30]. Among these, the highest tensile strength increase and least elongation decrease are observed for the 2 mm particle size USSP samples, which only decrease from 45% to about 32%.…”

Section: Mechanical Propertiesmentioning

confidence: 86%

Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy

Xiang

Chang

et al. 2023

Surf. Topogr.: Metrol. Prop.

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Surface nanocrystalline layers were prepared on Cu-8Cr alloy using ultrasonic shot peening (USSP) technique by controlling the pellet size and shot peening time. The tissue morphology, microstructure, surface hardness, surface strength and corrosion resistance of the generated surface nanolayers were systematically characterized using x-ray diffractometer (XRD) and scanning electron microscope (SEM) test methods, respectively. The results showed that the USSP treatment did not change the surface phase of Cu-8Cr alloy, but only refined the surface grains into nanocrystals. The pellet size and shot peening time had a large effect on the surface properties of Cu-8Cr alloy. The best overall surface properties were obtained with a shot size of 2 mm and a shot time of 30 min. The average grain size of the nano-layer was about 66 nm, the surface hardness was increased to 126.69 HV0.05, the tensile strength reached 417 MPa, and the corrosion resistance of the alloy was significantly enhanced. The USSP treatment provides a new method for the preparation of CuCr alloys with excellent surface properties.

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Section: Mechanical Propertiesmentioning

confidence: 86%

Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy

Xiang

Chang

et al. 2023

Surf. Topogr.: Metrol. Prop.

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“…The typical stress-strain relation beyond σ y for metal materials can be written as Equation ( 5) [14,25]:…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…It consists of loading, holding and unloading segments. Mechanical properties such as the hardness, elastic modulus, strain hardening exponent, and yield stress can be extracted from the curve through different methods [9][10][11][12][13][14][15][16][17]. The loading P-h curves of the elastoplastic materials with a sharp indenter can be described by Kick's law [18][19][20][21] in Equation (1):…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Mechanical Properties of Elastoplastic Materials on the Nanoindentation Loading Response

et al. 2020

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The nanoindentation loading response of elastoplastic materials was simulated by the finite element method (FEM). The influence of the Young’s modulus E, yield stress σy, strain hardening exponent n and Poisson’s ratio ν on the loading response was investigated. Based on an equivalent model, an equation with physical meaning was proposed to quantitatively describe the influence. The calculations agree well with the FEM simulations and experimental results in literature. Comparisons with the predictions using equations in the literature also show the reliability of the proposed equation. The investigations show that the loading curvature C increases with increasing E, σy, n and ν. The increase rates of C with E, σy, n and ν are different for their different influences on the flow stress after yielding. It is also found that the influence of one of the four mechanical parameters on C can be affected by the other mechanical parameters.

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“…161,162) This technique was also used to characterize the local behavior of gradient microstructure generated by SMAT. 163,164) However, the indenter heads with three-sided Berkovich or spherical tips cause complex stress field in the near contact region, and only typical loading-unloading curves can be obtained. 165,166) To obtain the stress-strain response in a more straightforward way, micro-pillar compression was used to investigate gradient microstructure generated by SMAT.…”

Section: Local Behaviormentioning

confidence: 99%

Mechanical Properties of Metallic Materials Processed by Surface Severe Plastic Deformation

2023

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This paper gives an overview about some mechanical properties of materials processed by surface severe plastic deformation (SSPD) techniques. SSPD processed materials are classified in terms of characteristics, and main generated parameters that determine the output properties of materials are presented. The influences of SSPD on mechanical properties of materials are then reviewed. Furthermore, the roles played by some parameters such as gradient microstructure, nanostructured layer, compressive residual stress (CRS) and surface integrity are highlighted by discussing their contributions. Finally, some conclusions are drawn and possible prospects for future research are underlined.

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Determination of mechanical properties of pure zirconium processed by surface severe plastic deformation through nanoindentation

Cited by 9 publications

References 32 publications

Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy

Effect of ultrasonic surface shot peening on the microstructure and properties of Cu-8Cr alloy

Influence of the Mechanical Properties of Elastoplastic Materials on the Nanoindentation Loading Response

Mechanical Properties of Metallic Materials Processed by Surface Severe Plastic Deformation

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