Investigation on shock-induced reaction characteristics of an Al/Ni composite processed via accumulative roll-bonding

Ji, Cheng; He, Yuehui; Wang, Chuan Ting; He, Yong; Pan, Xuchao; Jiao, Junjie; Guo, Liu

doi:10.1016/j.matdes.2016.12.002

Cited by 46 publications

(16 citation statements)

References 44 publications

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“…The complete reaction product of Al/Ni RM (the mole ratio of Al to Ni is 1:1.46) is considered AlNi and NiO in Xiong's work [22]. Since the impact release energy of the Al/Ni-based RM was large, the following assumptions are made in the present work: (1) the Al and Ni in AN completely participate in the oxidation reaction, and (2) the metal oxides in ANC and ANM completely participate in the aluminothermic reaction with Al, and the remaining Al and Ni participate in the oxidation reaction.…”

Section: Experimental Setup and Methods Of Calculationmentioning

confidence: 99%

“…The extent of the chemical reaction y can be calculated from the shock temperature T H using Formula (16) by considering the reaction threshold (T cr , y cr ). (4) The pressure P' and the temperature T' are updated after the chemical reaction [22]:…”

Section: Experimental Setup and Methods Of Calculationmentioning

confidence: 99%

“…The materials used to prepare for the energetic fragment are called reactive metals (RMs) [1,2], and they usually contain metal elements such as Al, Ni, Ti, W, Zr and Si and small amount of metal oxides such as Fe 2 O 3 , CuO, MgO, and MoO 3 . To improve the power of the warhead and expand the application fields of the RMs, many studies have mainly focused on mechanical properties [3][4][5][6][7][8][9][10][11][12] and impact energy release behavior [13][14][15][16][17][18][19][20][21][22]. Dynamic mechanical properties are important for the RMs.…”

Section: Introductionmentioning

confidence: 99%

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Probing the Impact Energy Release Behavior of Al/Ni-Based Reactive Metals with Experimental and Numerical Methods

Ren

Chen

Lin

et al. 2019

Metals

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Reactive metals (RMs) are a new class of material that can withstand mechanical loads and chemically react to release large amounts of heat under strong impact loading. They are gradually becoming widely used in defense and military fields, including for high-efficiency warheads and reactive armor. For the numerical simulation method considering the combined mechanical-thermo-chemical process for the impact energy release behavior of the RMs, the Al/Ni-based RMs were investigated in this work by combining experiments, theoretical calculations and a numerical simulation. Three kinds of Al/Ni-based RMs (Al-Ni, Al-Ni-CuO and Al-Ni-MoO3), were prepared using the hot-pressing forming process. Firstly, the compressive behavior and the parameters of the Johnson-Cook constitutive model were obtained using a mechanical testing machine and split Hopkinson pressure bars (SHPB). Secondly, the parameters of the equation of state (EOS) under the medium and low pressure conditions of the Al/Ni-based RMs, which were was seen as porous mixtures with high theoretical material density percentages (TMD%), were calculated based on the cold-energy superposition theory and the Wu-Jing method. Third, the impact energy release behaviors of the three RMs were studied with direct ballistic tests. The shock temperatures at different impact velocities were calculated based on the existing shock-induced chemical reaction thermo-chemical model while considering the chemical reaction efficiency, the relationship between the shock temperature and the extent of the chemical reaction was established, and the parameters of the relevant chemical kinetic equations were fitted. Finally, the user’s subroutines defining the material model were implemented to update the stresses in the solids elements in LS-DYNA. The model was based on the Johnson-Cook constitutive model with consideration of the mechanical-thermo-chemical coupling effect, which was verified by the experimental results. The results show that the constitutive model developed in this work can describe the impact energy release behavior of the Al/Ni-based RMs.

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Section: Experimental Setup and Methods Of Calculationmentioning

confidence: 99%

Section: Experimental Setup and Methods Of Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Probing the Impact Energy Release Behavior of Al/Ni-Based Reactive Metals with Experimental and Numerical Methods

Ren

Chen

Lin

et al. 2019

Metals

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“…However, due to the lack of corresponding potential functions, parameters of Mie-Gruneisen equation of state for multi-element alloys are difficult to obtain through molecular dynamics simulations. This research proposes a parameter identification method for calculating parameters of Mie-Gruneisen equation of state for multi-element alloys according to Ji et al [26] and Millett et al [27].…”

Section: Literature Reviewmentioning

confidence: 99%

Parameter Id of Metal Hi-pressure State Equation

Chen

2021

Applied Mathematics and Nonlinear Sciences

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In this study, parameters of the Grüneisen equation of state for GH4169 alloy were calculated based on multi-scale impact technology and first-principles calculation methods. The calculated parameters are consistent with the results of Liu et al., which primarily verifies the accuracy of the method. The AUTODYN software was used for numerical simulation of dynamic plate impact experiments. The parameters of the Grüneisen equation of GH4169 alloy were used as input to verify its accuracy. Comparing and analysing the speed of the free surface particle and the actual experimental measurement point at the same position, it is concluded that the simulated value is consistent with the experimental value. The morphology of the flying piece and the target have the same characteristics, which proves that Grüneisen equation of state parameters obtained by proposed parameter identification method are practical and reliable.

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“…Since RSM components, as a rule, are powders, they must be consolidated. There are various technologies to consolidate RSMs into a monolithic structure: radial forging [1,6], cold and hot isostatic pressing [7,8], high-pressure torsion [9], magnetron sputtering [10] and cold spraying [11,12], cold rolling [13,14], accumulative roll-bonding [15], and explosive compacting [5,16]. The disadvantages of sputtering are its low rate and high cost.…”

Section: Introductionmentioning

confidence: 99%

Reactive Ni–Al-Based Materials: Strength and Combustion Behavior

Seropyan

Saikov

Андреев

et al. 2021

Metals

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The effect of PTFE, continuous boron, and tungsten fibers on the combustion behavior and strength of reactive Ni–Al compacts was examined in this study. The introduction of continuous fibers into Ni–Al compacts according to the developed scheme was found to increase the flexural strength from 12 to 120 MPa. Heat treatment (HT), leading to chemical interaction of the starting components, increases the strength of compacts at temperatures not exceeding 550 °C. The combination of reinforcement and HT significantly increases the strength without reducing reactivity. Experimental results showed that strength and combustion rate increase with the reduction in PTFE to 1 wt % in Ni–Al compacts. A favorable effect of the addition of PTFE from 5 to 10 wt % on the reduction of the threshold for the shock-wave initiation of reactions in Ni–Al was established. The obtained results can be used to produce reactive materials with high mechanical and energy characteristics.

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Investigation on shock-induced reaction characteristics of an Al/Ni composite processed via accumulative roll-bonding

Cited by 46 publications

References 44 publications

Probing the Impact Energy Release Behavior of Al/Ni-Based Reactive Metals with Experimental and Numerical Methods

Probing the Impact Energy Release Behavior of Al/Ni-Based Reactive Metals with Experimental and Numerical Methods

Parameter Id of Metal Hi-pressure State Equation

Reactive Ni–Al-Based Materials: Strength and Combustion Behavior

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