搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

高应变率压缩下纳米孔洞对金属铝塑性变形的影响研究

第伍旻杰 胡晓棉

引用本文:
Citation:

高应变率压缩下纳米孔洞对金属铝塑性变形的影响研究

第伍旻杰, 胡晓棉

Plastic deformation in nanoporous aluminum subjected to high-rate uniaxial compression

Diwu Min-Jie, Hu Xiao-Mian
PDF
导出引用
  • 本文利用分子动力学模拟方法研究了含纳米孔洞金属铝在[110]晶向高应变率单轴压缩下弹塑性变形的微观过程. 对比单孔洞和完整单晶的模型, 讨论了多孔金属的应力应变关系及其位错发展规律. 研究结果表明, 对于多孔模型的位错积累过程, 位错密度随应变的增加可大致分为两个线性阶段. 由同一个孔洞生成的位错在相互靠近过程中, 其滑移速度越来越小; 随着位错继续滑移, 源自不同孔洞的位错之间开始交叉相互作用导致应变硬化. 达到流变峰应力之后又由于位错密度增殖速率升高发生软化. 当应变增加到11.8%时, 所有孔洞几乎完全坍缩, 并观察到在此过程中有棱位错生成.
    The mechanical behavior of nanoporous monocrystal aluminum subjected to uniaxial compressive loading at a rate of 2109 s- 1 along [110] crystallographic orientation is studied using molecular dynamics simulations. Subjected to such a loading, nanovoids act as the effective sources of dislocation nucleation and emission, four of the twelve {111}110 slip systems may be activated. With the same strain of 3.8%, dislocation nucleation will occur in both the sample of multiple voids and that with a single void. The configuration of multiple voids decreases the required stress for the onset of dislocation nucleation and emission in comparison with the sample with an isolated void of the same size. Because of the emission of trial partials, the accumulation of dislocation density can be changed into a piecewise linear process by the dislocation density propagation rate dd/d: in the initial stage of plastic deformation we obtain dd/d1.071018 m-2, but this changes to dd/d5.361018 m-2 at higher deformation. The velocity of dislocation is calculated to be subsonic and is a variable value during the plastic deformation. Dislocation loop pairs emit from the same void, glide and approach to each other, leading to the reduction of dislocation velocity. Then one loop of each pair continues to glide to intersect mutually and finally interact with the loops emitted from other voids, causing a strain hardening to reach the peak flow stress of 4.3 GPa. There is a post-yield softening corresponding to the onset of rapid dislocation density proliferation at higher dislocation densities. With the temperature evolution of the sample with multiple voids during plastic deformation, the density of mobile dislocations is calculated to be one magnitude lower than the total dislocation density. There is a decrease of mobile dislocation densities at large strains, showing that the mobile dislocation are diminished by the formation of dislocation forest and junctions. At the onset of their nucleation, the dislocations are all Shockley partials, however, when dislocation intersection happens, the majority are still Shockley partials, while the rest consists of Frank partials, perfect fcc dislocations and other dislocation ingredients. Voids collapse at the strain of 11.8%. No twins are found in the present simulation due to the high stacking-fault energy of aluminum. Prismatic dislocation loop emission is observed in this simulation.
      通信作者: 胡晓棉, hu_xiaomian@iapcm.ac.cn
      Corresponding author: Hu Xiao-Mian, hu_xiaomian@iapcm.ac.cn
    [1]

    Lubarda V, Schneider M, Kalantar D, Remington B, Meyers M 2004 Acta Mater. 52 1397

    [2]

    Shikama T, Pells G 1983 Philos. Mag. A 47 369

    [3]

    Russell K 1978 Acta Metall. 26 1615

    [4]

    Yang J H, Zhang T H 2005 Chin. Phys. 14 556

    [5]

    Marian J, Knap J, Ortiz M 2004 Phys. Rev. Lett. 93 165503

    [6]

    Deng X L, Zhu W J, He H L, Wu D X, Jing F Q 2006 Acta Phys. Sin. 55 4767 (in Chinese) [邓小良, 祝文军, 贺红亮, 伍登学, 经福谦 2006 物理学报 55 4767]

    [7]

    Rudd R E 2009 Philos. Mag. 89 3133

    [8]

    Tang Y, Bringa E M, Remington B A, Meyers M A 2011 Acta Mater. 59 1354

    [9]

    Bhatia M, Solanki K, Moitra A, Tschopp M 2013 Metall. Mater. Trans. A 44 617

    [10]

    Seppälä E, Belak J, Rudd R 2004 Phys. Rev. Lett. 93 245503

    [11]

    Deng X L, Zhu W J, Song Z F, He H L, Jing F Q 2009 Acta Phys. Sin. 58 4772 (in Chinese) [邓小良, 祝文军, 宋振飞, 贺红亮, 经福谦 2009 物理学报 58 4772]

    [12]

    Sun X Y, Xu G K, Li X, Feng X Q, Gao H 2013 J. Appl. Phys. 113 023505

    [13]

    Erhart P, Bringa E M, Kumar M, Albe K 2005 Phys. Rev. B 72 052104

    [14]

    Ruestes C, Bringa E, Stukowski A, Rodríguez Nieva J, Tang Y, Meyers M 2014 Comp. Mater. Sci. 88 92

    [15]

    Ruestes C, Bringa E, Stukowski A, Rodríguez Nieva J, Bertolino G, Tang Y, Meyers M 2013 Scripta Mater. 68 817

    [16]

    Rodriguez-Nieva J, Ruestes C, Tang Y, Bringa E 2014 Acta Mater. 80 67

    [17]

    Bringa E M, Traiviratana S, Meyers M A 2010 Acta Mater. 58 4458

    [18]

    Zhu W, Song Z, Deng X, He H, Cheng X 2007 Phys. Rev. B 75 024104

    [19]

    Plimpton S 1995 J. Comput. Phys. 117 1

    [20]

    Mishin Y, Farkas D, Mehl M, Papaconstantopoulos D 1999 Phys. Rev. B 59 3393

    [21]

    Li J 2003 Modell. Simul. Mater. Sci. Eng. 11 173

    [22]

    Stukowski A, Albe K 2010 Modell. Simul. Mater. Sci. Eng. 18 085001

    [23]

    Wu L, Markenscoff X 1996 J Elast. 44 131

    [24]

    Yamakov V, Wolf D, Phillpot S R, Mukherjee A K, Gleiter H 2002 Nature Mater. 1 45

    [25]

    Liao X, Zhou F, Lavernia E, He D, Zhu Y 2003 Appl. Phys. Lett. 83 5062

    [26]

    Yuan L, Jing P, Liu Y H, Xu Z H, Shan D B, Guo B 2014 Acta Phys. Sin. 63 016201 (in Chinese) [袁林, 敬鹏, 刘艳华, 徐振海, 单德彬, 郭斌 2014 物理学报 63 016201]

    [27]

    Higginbotham A, Bringa E M, Marian J, Park N, Suggit M, Wark J S 2011 J. Appl. Phys. 109 063530

    [28]

    Hodowany J, Ravichandran G, Rosakis A, Rosakis P 2000 Exp. Mech. 40 113

    [29]

    Ferguson W, Kumar A, Dorn J 1967 J Appl Phys 38 1863

    [30]

    Gorman J, Wood D, Vreeland Jr T 1969 J Appl Phys 40 833

    [31]

    Simar A, Bréchet Y, De Meester B, Denquin A, Pardoen T 2007 Acta Mater. 55 6133

    [32]

    Hordon M, Averbach B 1961 Acta Metall. 9 237

  • [1]

    Lubarda V, Schneider M, Kalantar D, Remington B, Meyers M 2004 Acta Mater. 52 1397

    [2]

    Shikama T, Pells G 1983 Philos. Mag. A 47 369

    [3]

    Russell K 1978 Acta Metall. 26 1615

    [4]

    Yang J H, Zhang T H 2005 Chin. Phys. 14 556

    [5]

    Marian J, Knap J, Ortiz M 2004 Phys. Rev. Lett. 93 165503

    [6]

    Deng X L, Zhu W J, He H L, Wu D X, Jing F Q 2006 Acta Phys. Sin. 55 4767 (in Chinese) [邓小良, 祝文军, 贺红亮, 伍登学, 经福谦 2006 物理学报 55 4767]

    [7]

    Rudd R E 2009 Philos. Mag. 89 3133

    [8]

    Tang Y, Bringa E M, Remington B A, Meyers M A 2011 Acta Mater. 59 1354

    [9]

    Bhatia M, Solanki K, Moitra A, Tschopp M 2013 Metall. Mater. Trans. A 44 617

    [10]

    Seppälä E, Belak J, Rudd R 2004 Phys. Rev. Lett. 93 245503

    [11]

    Deng X L, Zhu W J, Song Z F, He H L, Jing F Q 2009 Acta Phys. Sin. 58 4772 (in Chinese) [邓小良, 祝文军, 宋振飞, 贺红亮, 经福谦 2009 物理学报 58 4772]

    [12]

    Sun X Y, Xu G K, Li X, Feng X Q, Gao H 2013 J. Appl. Phys. 113 023505

    [13]

    Erhart P, Bringa E M, Kumar M, Albe K 2005 Phys. Rev. B 72 052104

    [14]

    Ruestes C, Bringa E, Stukowski A, Rodríguez Nieva J, Tang Y, Meyers M 2014 Comp. Mater. Sci. 88 92

    [15]

    Ruestes C, Bringa E, Stukowski A, Rodríguez Nieva J, Bertolino G, Tang Y, Meyers M 2013 Scripta Mater. 68 817

    [16]

    Rodriguez-Nieva J, Ruestes C, Tang Y, Bringa E 2014 Acta Mater. 80 67

    [17]

    Bringa E M, Traiviratana S, Meyers M A 2010 Acta Mater. 58 4458

    [18]

    Zhu W, Song Z, Deng X, He H, Cheng X 2007 Phys. Rev. B 75 024104

    [19]

    Plimpton S 1995 J. Comput. Phys. 117 1

    [20]

    Mishin Y, Farkas D, Mehl M, Papaconstantopoulos D 1999 Phys. Rev. B 59 3393

    [21]

    Li J 2003 Modell. Simul. Mater. Sci. Eng. 11 173

    [22]

    Stukowski A, Albe K 2010 Modell. Simul. Mater. Sci. Eng. 18 085001

    [23]

    Wu L, Markenscoff X 1996 J Elast. 44 131

    [24]

    Yamakov V, Wolf D, Phillpot S R, Mukherjee A K, Gleiter H 2002 Nature Mater. 1 45

    [25]

    Liao X, Zhou F, Lavernia E, He D, Zhu Y 2003 Appl. Phys. Lett. 83 5062

    [26]

    Yuan L, Jing P, Liu Y H, Xu Z H, Shan D B, Guo B 2014 Acta Phys. Sin. 63 016201 (in Chinese) [袁林, 敬鹏, 刘艳华, 徐振海, 单德彬, 郭斌 2014 物理学报 63 016201]

    [27]

    Higginbotham A, Bringa E M, Marian J, Park N, Suggit M, Wark J S 2011 J. Appl. Phys. 109 063530

    [28]

    Hodowany J, Ravichandran G, Rosakis A, Rosakis P 2000 Exp. Mech. 40 113

    [29]

    Ferguson W, Kumar A, Dorn J 1967 J Appl Phys 38 1863

    [30]

    Gorman J, Wood D, Vreeland Jr T 1969 J Appl Phys 40 833

    [31]

    Simar A, Bréchet Y, De Meester B, Denquin A, Pardoen T 2007 Acta Mater. 55 6133

    [32]

    Hordon M, Averbach B 1961 Acta Metall. 9 237

  • [1] 张博佳, 安敏荣, 胡腾, 韩腊. 镁中位错和非晶作用机制的分子动力学模拟. 物理学报, 2022, 71(14): 143101. doi: 10.7498/aps.71.20212318
    [2] 王小峰, 陶钢, 徐宁, 王鹏, 李召, 闻鹏. 冲击波诱导水中纳米气泡塌陷的分子动力学分析. 物理学报, 2021, 70(13): 134702. doi: 10.7498/aps.70.20210058
    [3] 刘强, 郭巧能, 钱相飞, 王海宁, 郭睿林, 肖志杰, 裴海蛟. 循环载荷下纳米铜/铝薄膜孔洞形核、生长及闭合的分子动力学模拟. 物理学报, 2019, 68(13): 133101. doi: 10.7498/aps.68.20181901
    [4] 李杰杰, 鲁斌斌, 线跃辉, 胡国明, 夏热. 纳米多孔银力学性能表征分子动力学模拟. 物理学报, 2018, 67(5): 056101. doi: 10.7498/aps.67.20172193
    [5] 郭巧能, 曹义刚, 孙强, 刘忠侠, 贾瑜, 霍裕平. 温度对超薄铜膜疲劳性能影响的分子动力学模拟. 物理学报, 2013, 62(10): 107103. doi: 10.7498/aps.62.107103
    [6] 董长胜, 谷雨, 钟敏霖, 马明星, 黄婷, 刘文今. 激光熔覆铜锰合金选择性脱合金制备纳米多孔涂层的研究. 物理学报, 2012, 61(9): 094211. doi: 10.7498/aps.61.094211
    [7] 顾芳, 张加宏, 杨丽娟, 顾斌. 应变石墨烯纳米带谐振特性的分子动力学研究. 物理学报, 2011, 60(5): 056103. doi: 10.7498/aps.60.056103
    [8] 汪志刚, 吴亮, 张杨, 文玉华. 面心立方铁纳米粒子的相变与并合行为的分子动力学研究. 物理学报, 2011, 60(9): 096105. doi: 10.7498/aps.60.096105
    [9] 杨平, 吴勇胜, 许海锋, 许鲜欣, 张立强, 李培. TiO2/ZnO纳米薄膜界面热导率的分子动力学模拟. 物理学报, 2011, 60(6): 066601. doi: 10.7498/aps.60.066601
    [10] 马文, 祝文军, 张亚林, 陈开果, 邓小良, 经福谦. 纳米多晶金属样本构建的分子动力学模拟研究. 物理学报, 2010, 59(7): 4781-4787. doi: 10.7498/aps.59.4781
    [11] 王伟, 张凯旺, 孟利军, 李中秋, 左学云, 钟建新. 多壁碳纳米管外壁高温蒸发的分子动力学模拟. 物理学报, 2010, 59(4): 2672-2678. doi: 10.7498/aps.59.2672
    [12] 陈开果, 祝文军, 马文, 邓小良, 贺红亮, 经福谦. 冲击波在纳米金属铜中传播的分子动力学模拟. 物理学报, 2010, 59(2): 1225-1232. doi: 10.7498/aps.59.1225
    [13] 邓小良, 祝文军, 宋振飞, 贺红亮, 经福谦. 冲击加载下孔洞贯通的微观机理研究. 物理学报, 2009, 58(7): 4772-4778. doi: 10.7498/aps.58.4772
    [14] 周耐根, 周 浪. 采用纳米晶柱阵列衬底抑制失配位错形成的分子动力学模拟研究. 物理学报, 2008, 57(5): 3064-3070. doi: 10.7498/aps.57.3064
    [15] 周国荣, 高秋明. 金属Ni纳米线凝固行为的分子动力学模拟. 物理学报, 2007, 56(3): 1499-1505. doi: 10.7498/aps.56.1499
    [16] 崔新林, 祝文军, 邓小良, 李英骏, 贺红亮. 冲击波压缩下含纳米孔洞单晶铁的结构相变研究. 物理学报, 2006, 55(10): 5545-5550. doi: 10.7498/aps.55.5545
    [17] 邓小良, 祝文军, 贺红亮, 伍登学, 经福谦. 〈111〉晶向冲击加载下单晶铜中纳米孔洞增长的早期动力学行为. 物理学报, 2006, 55(9): 4767-4773. doi: 10.7498/aps.55.4767
    [18] 杨全文, 朱如曾. 纳米铜团簇凝结规律的分子动力学研究. 物理学报, 2005, 54(9): 4245-4250. doi: 10.7498/aps.54.4245
    [19] 梁海弋, 王秀喜, 吴恒安, 王宇. 纳米多晶铜微观结构的分子动力学模拟. 物理学报, 2002, 51(10): 2308-2314. doi: 10.7498/aps.51.2308
    [20] 吴恒安, 倪向贵, 王宇, 王秀喜. 金属纳米棒弯曲力学行为的分子动力学模拟. 物理学报, 2002, 51(7): 1412-1415. doi: 10.7498/aps.51.1412
计量
  • 文章访问数:  4865
  • PDF下载量:  519
  • 被引次数: 0
出版历程
  • 收稿日期:  2015-02-24
  • 修回日期:  2015-05-07
  • 刊出日期:  2015-09-05

/

返回文章
返回