Spalling Behavior of As-cast TiZrNbV Refractory High Entropy Alloy

被引：0
|
作者：
Chen R. [1 ]
Ma R. [1 ]
Wang Z. [1 ]
Ren K.-R. [1 ]
Zhang S.-Y. [1 ]
Tian Z.-D. [1 ]
机构：
[1] College of Science, National University of Defense Technology, Changsha
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2024年 / 32卷 / 04期
关键词：
GTN-JC; Parameter inversion; refractory high entropy alloy; Spalling;
D O I：
10.11943/CJEM2023133
中图分类号：
学科分类号：
摘要：
The cast TiZrNbV refractory high entropy alloy（RHEA）has high structural strength and good energy release characteristics. As an energetic structural material，it needs to withstand complex dynamic load environments in engineering applications. Studying the spalling behavior of TiZrNbV refractory high entropy alloy and obtaining accurate dynamic constitutive parameters are vital for its engineering application. The spalling characteristics of TiZrNbV RHEA were studied by flat plate impact experiment using a 20mm light gas gun. Parameters such as spalling strength，Hugoniot elastic limit（HEL），and plastic strain rate were obtained，based on the free surface velocity history. The recycled specimens were analyzed using scanning electron microscopy （SEM），and the spalling characteristics of TiZrNbV RHEA at different strain rates were analyzed from both macro and micro perspectives. It was shown that the geometrically necessary dislocation of the samples significantly increased with the increase of loading velocity. The spalling strength of TiZrNbV RHEA increases with the loading strain rate and the loading stress，with values ranging from 0.93 GPa to 2.23 GPa. The GTN-JC constitutive model parameters of TiZrNbV RHEA were obtained by calibrating the free surface velocity history of the spallation experiment with a flyer velocity of 580 m·s-1. The spallation behavior of the sample under 610 m·s-1 flyer velocity loading was calculated by using the fitted parameters. It was indicated that the free surface velocity curve of the spallation experiment performed well in simulating the spallation behavior of coarse-grained TiZrNbV RHEA. The simulation results show that the free surface velocity curve is consistent before the first tensile stage，which can be used for the dynamic analysis of sample spalling failure. The obtained parameters can provide reference for the engineering application of TiZrNbV RHEA. © 2024 Institute of Chemical Materials, China Academy of Engineering Physics. All rights reserved.
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页码：387 / 396
页数：9
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共 34 条
  • [1] MIRACLE D B, Et al., Mechanical properties of low-density，refractory multi-principal element alloys of the Cr-Nb-Ti-V-Zr system［J］, Materials Science and Engineering, 565, pp. 51-62, (2013)
  • [2] SENKOV O N., A critical review of high entropy alloys and related concepts［J］, Acta Materialia, 122, pp. 448-511, (2017)
  • [3] Compositional effect on microstructure and properties of NbTiZr-based complex concentrated alloys［J］, Acta Materialia, 151, pp. 201-215, (2018)
  • [4] TANG Yu, WANG Rui-xin, LI Shun, Et al., Potential and challenges of high-entropy alloy energetic structural materials［J］, Chinese Journal of Energetic Materials（Hanneng Cailiao）, 29, 10, pp. 1008-1018, (2021)
  • [5] WANG L, DING J, CHEN S S，, Et al., Tailoring planar slip to achieve pure metal-like ductility in body-centred-cubic multi-principal element alloys［J］, Nature Materials, (2023)
  • [6] ZENG S, ZHOU Y K, Et al., Microstructure and mechanical properties of lightweight Ti<sub>3</sub>Zr<sub>1.5</sub>NbVAl<sub>x</sub>（x=0，0.25，0.5 and 0.75） refractory complex concentrated alloys［J］, Journal of Materials Science & Technology, 130, pp. 64-74, (2022)
  • [7] ZENG S, Et al., A single-phase Ti<sub>3</sub>Zr<sub>1.5</sub>NbVAl<sub>0.25</sub> refractory high entropy alloy with excellent combination of strength and toughness［J］, Materials Letters, 323, (2022)
  • [8] LIU F X，, CHEN S S，, WANG B P，, Et al., High specific yield strength TiZrAlNbV high-entropy alloys via coherent nanopre-cipitation strengthening［J］, Materials Science and Engineering A‑Structural Materials Properties Microstructure and Process‑ ing, 861, (2022)
  • [9] ZHANG Z，, ZHANG H，, TANG Y，, Et al., Microstructure，mechanical properties and energetic characteristics of a novel high-entropy alloy HfZrTiTa<sub>0.53</sub>［J］, Materials & Design, 133, pp. 435-443, (2017)
  • [10] CHEN R，, Et al., Compression properties and impact energy release characteristics of TiZrNbV high-entropy alloy［J］, Materials Science and Engineering：A‑Structural Ma‑ terials Properties Microstructure and Processing, (2021)
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