Simulation and analysis of melting behavior of local atomic structure of refractory metals vanadium

Jiang Yuan-Qi

doi:10.7498/aps.69.20200185

Abstract

By using large-scale atomic/molecular massively parallel simulator (LAMMPS) code, a molecular dynamics simulation is performed in the NPT ensemble at zero pressure to investigate the influence of melting rates γ on the evolutional characteristics of vanadium atomic structure such as body-centered cubic (BCC), hexagonal close-packed structure (HCP), face centered cubic (FCC), simple cubic (SC) and icosahedra (ICO) during the rapid melting of solid vanadium crystal at five different melting rates (γ₁ = 1 × 10¹¹ K/s, γ₂ = 1 × 10¹² K/s, γ₃ = 1 × 10¹³ K/s, γ₄ = 1 × 10¹⁴ K/s , γ₅ = 1 × 10¹⁵ K/s), in which 16000 atoms in a cubic box under the periodic boundary condition are considered, and their motion equations are solved by Verlet’s algorithm in the velocity form in time steps of 1 fs. Constant pressure P and temperature T are imposed by a modified Nose-Hoover method for both P and T variables, and an embedded-atom model (EAM) potential is utilized. For identifying the local atomic structures of liquid and solid vanadium at different temperatures, a polyhedral template matching method (PTMM) is used by measuring the root-mean square deviation (RMSD), in which clusters are classified as the topology of the local atomic environment without any ambiguity in the classification. Subsequently, the variation of the potential energy, entropy and Gibbs free energy of FCC, HCP, BCC and ICO vanadium clusters are calculated through ab initio MD simulation in the canonical ensemble (NVT) at selected temperatures, and the lowest-energy dynamic structure and its corresponding static heating structure are also shown in this paper. Based on the above calculated results, it is found that the melting point of refractory metal vanadium increases obviously with the increase of heating rate, but the heating rate only presents a limited effect on the population of atomic structure for each of BCC, HCP, FCC, SC and ICO. Namely, the temperature still plays a dominant role in the rapid melting process of V rather than heating rate. Moreover, the ab initio MD simulation and thermodynamics analysis further reveal that lots of ICO clusters of vanadium can exist stably in the liquid region rather than in solid crystal, which is not only due to its higher stability and longer lifetime than those of crystalline atomic clusters, but also because ICO possesses higher entropy and lower Gibbs free energy in high temperature liquid region.

Keywords:

Authors and contacts

Jiang Yuan-Qi^1,2

1.
Department of Physics, Nanchang Normal University, Nanchang 330032, China
2.
College of Physics, Jilin University, Changchun 130012, China

Corresponding author: Jiang Yuan-Qi, yuanqi325@163.com

Funds: Project supported by the Jiangxi Provincial Natural Science Foundation, China (Grant Nos. 20202BAB204004, 20171BAB216001), the Scientific Research Project of Jiangxi Provincial Education Department, China (Grant Nos. GJJ191114, GJJ161242), the Qinglan Scholars Program of Nanchang Normal University, China, and the National Natural Science Foundation of China (Grant Nos. 51871096, 11664028)

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References

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Cited By

图 1 5种不同熔化速率下金属钒体系的势能变化与温度之间的演变关系, (b)是(a)的局部放大图

Figure 1. The potential energy of the vanadium metal as a function of temperature at various melting rates γ, (b) is a partial enlarged view of (a).

DownLoad: Full-Size Img PowerPoint

图 2 5种不同熔化速率下金属钒体系的体积变化与温度之间的演变关系, (b)是(a)的局部放大图

Figure 2. The volume of the vanadium metal as a function of temperature at various melting rates γ, (b) is a partial enlarged view of (a).

DownLoad: Full-Size Img PowerPoint

图 3 不同熔化速率下体系压强随温度的演变关系

Figure 3. The pressure of the vanadium metal as a function of temperature at various melting rates γ.

DownLoad: Full-Size Img PowerPoint

图 4 熔化速率为γ₂ = 1 × 10¹² K/s时RDF在不同温度区间的演变关系

Figure 4. The RDF for vanadium metal at different temperature obtained by rapid heating rate γ₂ = 1 × 10¹² K/s.

DownLoad: Full-Size Img PowerPoint

图 5 晶体钒熔化过程不同类型团簇的演变示意图(γ₂ = 1 × 10¹² K/s)

Figure 5. Different type atomic schematic diagraph in vanadium system at heating rate γ₂ = 1 × 10¹² K/s.

DownLoad: Full-Size Img PowerPoint

图 6 利用多面体模板匹配法分析得到的5种不同熔化速率下FCC, HCP, BCC, ICO以及SC类型团簇原子随温度的演变关系

Figure 6. The population of the FCC, HCP, BCC, ICO and SC types atoms in V system as a function of temperature obtained from the polyhedral template matching at various rates, respectively.

DownLoad: Full-Size Img PowerPoint

图 7 利用多面体模板匹配法分析得到的5种不同熔化速率下各种类型团簇原子分布随温度的演变关系　(a) FCC; (b) HCP; (c) BCC; (d) ICO; (e) SC; (f)其他类型团簇

Figure 7. The fraction of the various types atoms in V system as a function of temperature obtained from the polyhedral template matching at five various rates: (a) FCC; (b) HCP; (c) BCC; (d) ICO; (e) SC; (f) other types atoms counts.

DownLoad: Full-Size Img PowerPoint

图 8 FCC, HCP, BCC以及ICO 团簇平均每原子势能随模拟步长的演变趋势　(a) 300 K; (b) 500 K; (c) 1100 K

Figure 8. The variation of the potential energy of per atom of FCC, HCP, BCC and ICO cluster as a function of time step, respectively: (a) 300 K; (b) 500 K; (c) 1100 K

DownLoad: Full-Size Img PowerPoint

图 9 FCC, HCP, BCC及ICO 原子团簇的熵与吉布斯自由能随温度的演变关系　(a) 熵; (b) 吉布斯自由能

Figure 9. The variation of the entropy and Gibbs free energy of FCC, HCP, BCC and ICO cluster as a function of temperature, respectively: (a) Entropy; (b) Gibbs free energy.

DownLoad: Full-Size Img PowerPoint

[1]	Cheng Y Q, Ma E 2011 Prog. Mater. Sci. 56 379 Google Scholar
[2]	Baletto F 2005 Rev. Mod. Phys. 77 371 Google Scholar
[3]	Turci F, Tarjus G, Royall C P 2017 Phys. Rev. Lett. 118 215501 Google Scholar
[4]	Shen Y T, Kim T H, Gangopadhyay A K, Kelton K F 2009 Phys. Rev. Lett. 102 057801 Google Scholar
[5]	Sprakel J, Zaccone A, Spaepen F, Schall P, Weitz D 2017 Phys. Rev. Lett. 118 088003 Google Scholar
[6]	Şopu D, Stukowski A, Stoica M, Scudino S 2017 Phys. Rev. Lett. 119 195503 Google Scholar
[7]	Jiang Y Q, Wen D D, Peng P 2017 J. Mole. Liquids 230 271 Google Scholar
[8]	Jiang Y Q, Wen D D, Peng P, Han S C, Hou Z Y 2015 Comput. Mater. Sci. 99 156 Google Scholar
[9]	Zhong L, Wang J, Sheng H, Zhang Z, Mao S X 2014 Nature 512 177 Google Scholar
[10]	蒋元祺, 彭平 2018 物理学报 67 132101 Google Scholar Jiang Y Q, Peng P 2018 Acta Phys. Sin. 67 132101 Google Scholar
[11]	Jiang Y Q, Peng P 2020 Chin. Phys. B. 29 046105 Google Scholar
[12]	Jiang Y Q, Wen D D, He W X, Peng P 2018 Mol. Simulat. 44 1183 Google Scholar
[13]	武振伟, 李茂枝, 徐莉梅, 汪卫华 2017 物理学报 66 176405 Google Scholar Wu Z W, Li M Z, Xu L M, Wang W H 2017 Acta Phys. Sin. 66 176405 Google Scholar
[14]	邓永和, 文大东, 彭超, 韦彦丁, 赵瑞, 彭平 2016 物理学报 65 066401 Google Scholar Deng Y H, Wen D D, Peng C, Wei Y D, Zhao R, Peng P 2016 Acta Phys. Sin. 65 066401 Google Scholar
[15]	孙保安, 王利峰, 邵建华 2017 物理学报 66 178103 Google Scholar Sun B A, Wang L F, Shao J H 2017 Acta Phys. Sin. 66 178103 Google Scholar
[16]	Yang M H, Cai B, Sun Y, Zhang F, Wang Y F, Wang C Z, Ho K M 2019 Phys. Rev. Mater. 3 125602 Google Scholar
[17]	孙奕韬, 王超, 吕玉苗, 胡远超, 罗鹏, 刘明, 咸海杰, 赵德乾, 丁大伟, 孙保安, 潘明祥, 闻平, 白海洋, 柳延辉, 汪卫华 2018 物理学报 67 126101 Google Scholar Sun Y T, Wang C, Lü Y M, Hu Y C, Luo P, Liu M, Xian H J, Zhao D Q, Ding D W, Sun B A, Pan M X, Wen P, Bai H Y, Liu Y H, Wang W H 2018 Acta Phys. Sin. 67 126101 Google Scholar
[18]	Li M X, Zhao S F, Lu Z, Hirata A, Wen P, Bai H Y, Chen M W, Schroers J, Liu Y H, Wang W H 2019 Nature 569 99 Google Scholar
[19]	Sheng H W, Luo W K, Alamgir F M, Bai J M, Ma E 2006 Nature 439 419 Google Scholar
[20]	Hirata A, Kang L J, Fujita T, Klumov B, Matsue K, Kotani M, Yavari A R, Chen M W 2013 Science 341 376 Google Scholar
[21]	Wang H Q, Li H F 2015 RSC Adv. 5 94685 Google Scholar
[22]	Sosso C C, Chen J, Stephen J, Fitzner M, Pedevilla P, Zen A, Michaelides A 2016 Chem. Rev. 116 7078 Google Scholar
[23]	Taherkhani F, Akbarzadeh H, Rezania H 2014 J. Alloys. Compd. 617 746 Google Scholar
[24]	Chen L, Wang Q, Xiong L 2017 J. Nanopart. Res. 19 300 Google Scholar
[25]	Zhang Z, Hu W, Xiao S 2006 Phys. Rev. B 73 125443 Google Scholar
[26]	Nunez S, Lopez J M, Aguado A 2012 Nanoscale 4 6481 Google Scholar
[27]	Steenbergen K G, Gaston N 2013 Phys. Chem. Chem. Phys. 15 15325 Google Scholar
[28]	Taran S, Garip A K, Arslan H 2020 J. Clus. Sci. 10876 Google Scholar
[29]	Taran S, Garip A K, Arslan H 2020 Chin. Phys. B 29 077801 Google Scholar
[30]	Elatresh S F, Bonev S A, Gregoryanz E, Ashcroft N W 2016 Phys. Rev. B 94 104107 Google Scholar
[31]	Zhao C Y, Tao Y, Yu Y S 2020 Int. J. Mass. Tran. 150 119382 Google Scholar
[32]	Feng D, Feng Y, Yuan S, Zhang X, Wang G 2017 Appl. Therm. Eng. 111 1457 Google Scholar
[33]	Fang X W, Wang C Z, Yao Y X, Ding Z J, Ho K M 2011 Phys. Rev. B 83 224203 Google Scholar
[34]	Aguado A, Jarrold M F 2011 Annu. Rev. Phys. Chem. 62 151 Google Scholar
[35]	Lekka C E, Papaconstantopoulos D A 2007 Surf. Sci. 601 3937 Google Scholar
[36]	Pyfer K L, Kafader J O, Yalamanchali A, Jarrold M F 2014 J. Phys. Chem. A 118 4900 Google Scholar
[37]	Haberland H, Hippler T, Donges J, Kostko O, Schmidt M, Issendorff B 2005 Phys. Rev. Lett. 94 035701 Google Scholar
[38]	Zhang L, Sun H 2010 Phys. Status Solidi 207 1178 Google Scholar
[39]	Jena P, Sun Q 2018 Chem. Rev. 118 5755 Google Scholar
[40]	Chacko S, Joshi K, Kanhere D G 2004 Phys. Rev. Lett. 92 135506 Google Scholar
[41]	Rapacioli M, Tarrat N, Spiegelman F 2018 J. Phys. Chem. A 122 4092 Google Scholar
[42]	Breaux G.A, Benirschke R C, Sugai T, Kinnear B S, Jarrold M F 2003 Phys. Rev. Lett. 91 215508 Google Scholar
[43]	Nelli D, Ferrando R 2019 Nanoscale 11 13040 Google Scholar
[44]	Settem M, Kanjarla A K 2020 Sci. Rep. 10 3296 Google Scholar
[45]	Wu J, Qi L, You H, Gross A, Li J, Yang H 2012 J. Am. Chem. Soc. 134 11880 Google Scholar
[46]	Zhang J, Chen J, Hu P, Wang H 2020 Chin. Chem. Lett. 31 890 Google Scholar
[47]	Mao H K, Chen X J, Ding Y, Li B, Wang B 2018 Rev. Mod. Phys. 90 015007 Google Scholar
[48]	Plimpton S 1995 J. Comput. Phys. 117 1 Google Scholar
[49]	Cai J, Ye Y 1996 Phys. Rev. B 54 8398 Google Scholar
[50]	Stukowski A 2010 Model. Simul. Mater. Sc. 18 015012 Google Scholar
[51]	Larsen P M, Schmidt S, Schiøtz J 2016 Model. Simul. Mater. Sc. 24 055007 Google Scholar
[52]	蒋元祺 2015 博士学位论文(长沙: 湖南大学) Jiang Y Q 2015 Ph. D. Dissertation (Changsha: Hunan University) (in Chinese)

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