Investigation of impact resistance in novel TWIP steel / ceramic composite structures
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摘要: 为提升装甲的抗冲击防护效能，开展陶瓷与新型TWIP钢复合结构的抗冲击性能研究，通过一级轻气炮实验、微观结构表征与数值模拟，研究了碳化硅陶瓷与TWIP钢复合结构在高速冲击载荷下的层裂强度，变形机制和损伤特性。实验结果表明，复合结构在层裂强度和应变率方面相较于纯TWIP钢分别有22.76%和7.09%的提高，复合结构的层裂程度较弱，裂纹和微孔洞数量较少，显示出更好的抗冲击性能。微观分析揭示了材料在冲击载荷下的损伤机制，包括微孔洞的形成、聚集和主裂纹的形成。采用LS/DYNA数值模拟对此类复合结构的抗冲击性能开展研究，结合实验结果验证了模型的准确性。基于数值模拟分析了冲击过程中不同时刻的应力分布，计算得到结构产生裂纹的临界冲击速度为225 m/s左右，并进一步分析了钢材性能对复合结构抗冲击性能影响。Abstract: To enhance the anti-impact protective performance of armor systems and address the demands of lightweight armored vehicles and military equipment, a systematic study was conducted on the ballistic resistance of a silicon carbide (SiC) ceramic/novel TWIP (Twinning-Induced Plasticity) steel composite structure. Samples of the SiC ceramic/TWIP steel composite and monolithic TWIP steel were fabricated for comparative analysis. Single-stage light gas gun plate impact experiments were performed at a flyer impact velocity of 500 m/s to obtain free-surface velocity profiles of both materials under high-velocity loading. The spall strength and strain rate sensitivity of the composite and monolithic steel were calculated from these profiles and statistically compared. Scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) were employed to characterize the microstructural evolution and damage mechanisms, including microvoid nucleation, coalescence, and primary crack propagation, in the impacted samples. Numerical simulations were implemented using LS-DYNA, where the TWIP steel was modeled with the Johnson-Cook (J-C) constitutive equation, and a particle-based method was adopted to simulate the brittle ceramic phase. The simulations were extended to investigate spallation behavior at varying impact velocities and to evaluate the influence of different steel properties on composite performance. Experimental results demonstrate that the composite exhibits 22.76% and 7.09% enhancements in spall strength and strain rate sensitivity, respectively, compared to monolithic TWIP steel. Microstructural analysis reveals that both materials undergo ductile fracture characterized by microvoid coalescence; however, the composite shows significantly weaker spall damage, confirming its superior impact resistance. The numerical model achieves excellent agreement with experimental data, validating its predictive accuracy. Stress distribution analysis during the impact process identifies a critical crack-initiation velocity of approximately 225 m/s. Furthermore, the influence of steel properties on the anti-impact performance of the composite structure was analyzed, demonstrating that the novel TWIP steel exhibits superior performance.
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Key words:
- impact loading /
- light gas gun /
- novel TWIP steel /
- failure mechanism /
- spall strength
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图 11 新型TWIP钢层的应力分布与裂裂纹形貌
Figure 11. Stress distribution and crack morphology of new TWIP Steel
图 12 复合结构不同冲击速度下的等效应力分布图
Figure 12. Equivalent stress distribution diagram of composite structure under different impact velocities
图 13 单独TWIP钢不同冲击速度下的等效应力分布图
Figure 13. Equivalent stress distribution diagram of single TWIP Steel under different impact velocities
图 14 S275N结构钢复合材料不同冲击速度下的等效应力分布图
Figure 14. Equivalent stress distribution diagram of S275N structural steel composite under different impact velocities
表 1 新型TWIP钢基本力学性能表
Table 1. Basic mechanical properties of novel TWIP Steel
屈服强度/
MPa抗拉强度/
MPa屈强比 均匀延伸率 断裂伸长率 强塑积/
(MPa%)350 853 0.411 0.582 0.606 51680 
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表 2 材料密度与硬度
Table 2. Material density and hardness
材料 密度/(g·cm−3) 布式硬度/GPa 新型TWIP钢 7.61 3.97 SiC陶瓷 3.20 24.8
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表 3 飞片与样品规格
Table 3. Specifications of flyer and sample
工况 飞片直径/
mm飞片厚度/
mm样品直径/
mm样品厚度/
mm样品
质量/g样品平均密度/
(g·cm−3)1 13.3 1.0 12.0 2.2 1.642 6.6 2 13.3 1.0 12.0 2.0 1.721 7.6
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表 4 轻气炮冲击试验结果参数
Table 4. Parameters of impact test results of light gas gun
编号 uf/(m·s−1) $ \dot{\varepsilon } $/(105 s−1) Δu/(m·s−1) cl/(km·s−1) cs/(km·s−1) cb/(km·s−1) σsp/GPa 1 493 1.354 161 5.540 3.130 4.199 2.980 2 492 1.450 173 5.569 3.118 4.267 3.172
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表 5 SiC陶瓷基本力学参数
Table 5. Basic mechanical parameters of SiC ceramics
密度/(g·cm−3) 杨氏模量/GPa 泊松比 体积模量/GPa 剪切模量/GPa 350 245 0.51 157 99
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[1] ZHAO N, YAO S J, ZHANG D, et al. Experimental and numerical studies on the dynamic response of stiffened plates under confined blast loads [J]. Thin-Walled Structures, 2020, 154: 106839. DOI: 10.1016/j.tws.2020.106839. [2] LI C, LI B, HUANG J Y, et al. Spall damage of a mild carbon steel: Effects of peak stress, strain rate and pulse duration [J]. Materials Science and Engineering: A, 2016, 660: 139–147. DOI: 10.1016/j.msea.2016.02.080. [3] 韩辉, 李军, 焦丽娟, 等. 陶瓷-金属复合材料在防弹领域的应用研究 [J]. 材料导报, 2007, 21(2): 34–37. DOI: 10.3321/j.issn:1005-023X.2007.02.009.HAN H, LI J, JIAO L J, et al. Study on the application of ceramic-metal composite materials in bulletproof field [J]. Materials Reports, 2007, 21(2): 34–37. DOI: 10.3321/j.issn:1005-023X.2007.02.009. [4] 冯新畅, 刘希月, 唐宇, 等. TWIP钢的动态力学性能及变形机制研究 [J]. 稀有金属材料与工程, 2023, 52(5): 1695–1707. DOI: 10.12442/j.issn.1002-185X.20220813.FENG X C, LIU X Y, TANG Y, et al. Dynamic mechanical properties and deformation mechanism of TWIP steel [J]. Rare Metal Materials and Engineering, 2023, 52(5): 1695–1707. DOI: 10.12442/j.issn.1002-185X.20220813. [5] HUANG X W, GE J Z, ZHAO J, et al. Experimental and fracture model study of Q690D steel under various stress conditions [J]. International Journal of Steel Structures, 2021, 21(2): 561–575. DOI: 10.1007/s13296-021-00456-3. [6] 林超. Fe-Mn-Si-Al孪晶诱导塑性钢在动态加载条件下的变形机制和组织性能研究 [D]. 成都: 西南交通大学, 2018: 34–37.LIN C. Investigations on deformation mechanism and microstructure-mechanical property of Fe-Mn-Si-Al TWIP steels under dynamic loading conditions [D]. Chengdu: Southwest Jiaotong University, 2018: 34–37. [7] VISSER W, GHONEM H. Twin nucleation in cold rolled low carbon steel subjected to plate impacts [J]. Materials Science and Engineering: A, 2017, 687: 28–38. DOI: 10.1016/j.msea.2016.12.086. [8] TANG W Q, ZHANG K, CHEN T Y, et al. Microstructural evolution and energetic characteristics of TiZrHfTa0.7W0.3 high-entropy alloy under high strain rates and its application in high-velocity penetration [J]. Journal of Materials Science & Technology, 2023, 132: 144–153. DOI: 10.1016/j.jmst.2022.05.043. [9] FENG X C, LIU X Y, BAI S X, et al. Investigation of dynamic tensile mechanical responses and deformation mechanism at high strain rates in a TWIP steel [J]. Journal of Materials Research and Technology, 2023, 26: 639–653. DOI: 10.1016/J.JMRT.2023.07.241. [10] WHELCHEL R L, SANDERS T H JR, THADHANI N N. Spall and dynamic yield behavior of an annealed aluminum-magnesium alloy [J]. Scripta Materialia, 2014, 92: 59–62. DOI: 10.1016/j.scriptamat.2014.08.014. [11] 陈荣, 马荣, 王峥, 等. 铸态TiZrNbV难熔高熵合金的层裂行为 [J]. 含能材料, 2024, 32(4): 387–396. DOI: 10.11943/CJEM2023133.CHEN R, MA R, WANG Z, et al. Spalling behavior of as-cast TiZrNbV refractory high entropy alloy [J]. Chinese Journal of Energetic Materials, 2024, 32(4): 387–396. DOI: 10.11943/CJEM2023133. [12] 初建鹏, 冯建程, 鞠翔宇, 等. 动载作用下高强度钢的层裂特性研究 [J]. 兵器材料科学与工程, 2024, 47(2): 129–135. DOI: 10.14024/j.cnki.1004-244x.20240221.002.CHU J P, FENG J C, JU X Y, et al. Study on spalling characteristics of high strength steel under dynamic load [J]. Ordnance Material Science and Engineering, 2024, 47(2): 129–135. DOI: 10.14024/j.cnki.1004-244x.20240221.002. [13] STRAND O T, GOOSMAN D R, MARTINEZ C, et al. Compact system for high-speed velocimetry using heterodyne techniques [J]. Review of Scientific Instruments, 2006, 77(8): 083108. DOI: 10.1063/1.2336749. [14] 张凤国, 王裴, 王昆, 等. 关于延性金属材料层裂强度概念的解读 [J]. 防护工程, 2020, 42(5): 33–36. DOI: 10.3969/j.issn.1674-1854.2020.05.005.ZHANG F G, WANG P, WANG K, et al. Interpretation of the concept of spalling strength of ductile metal materials [J]. Protective Engineering, 2020, 42(5): 33–36. DOI: 10.3969/j.issn.1674-1854.2020.05.005. [15] 罗国强, 黄志宏, 张睿智, 等. Cu/PMMA复合材料的声速与冲击响应行为 [J]. 高压物理学报, 2021, 35(1): 011301. DOI: 10.11858/gywlxb.20200599.LUO G Q, HUANG Z H, ZHANG R Z, et al. Sound velocity and shock response behavior of Cu/PMMA composites [J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 011301. DOI: 10.11858/gywlxb.20200599. [16] AMERI A, WANG H X, LI Z J, et al. Spall strength dependence on peak stress and deformation history in Lean Duplex Stainless Steel 2101 [J]. Materials Science and Engineering: A, 2022, 831: 142158. DOI: 10.1016/j.msea.2021.142158. [17] LI L X, LIU X Y, XU J, et al. Shock compression and spall damage of dendritic high-entropy alloy CoCrFeNiCu [J]. Journal of Alloys and Compounds, 2023, 947: 169650. DOI: 10.1016/j.jallcom.2023.169650. [18] DAI Z H, LU L, CHAI H W, et al. Mechanical properties and fracture behavior of Mg–3Al–1Zn alloy under high strain rate loading [J]. Materials Science and Engineering: A, 2020, 789: 139690. DOI: 10.1016/j.msea.2020.139690. [19] 郭伟国. 动态本构关系简介 [J]. 爆炸与冲击, 2022, 42(9): 091400. DOI: 10.11883/bzycj-2022-0411.GUO W G. An introduction to dynamic consititutive relation ship [J]. Explosion and Shock Waves, 2022, 42(9): 091400. DOI: 10.11883/bzycj-2022-0411. [20] 郭子涛, 高斌, 郭钊, 等. 基于J-C模型的Q235钢的动态本构关系 [J]. 爆炸与冲击, 2018, 38(4): 804–810. DOI: 10.11883/bzycj-2016-0333.GUO Z T, GAO B, GUO Z, et al. Dynamic constitutive relation based on J-C model of Q235 steel [J]. Explosion and Shock Waves, 2018, 38(4): 804–810. DOI: 10.11883/bzycj-2016-0333. [21] LI Z G, LI R, JI C, et al. Development of a modified Gurson–Tvergaard–Needleman damage model characterizing the strain-rate-dependent behavior of 6061-T5 aluminum alloy [J]. Journal of Materials Engineering and Performance, 2022, 31(9): 7662–7672. DOI: 10.1007/s11665-022-06789-2. [22] CZARNOTA C, JACQUES N, MERCIER S, et al. Modelling of dynamic ductile fracture and application to the simulation of plate impact tests on tantalum [J]. Journal of the Mechanics and Physics of Solids, 2008, 56(4): 1624–1650. DOI: 10.1016/j.jmps.2007.07.017. -
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