Atomic-level insights on enhanced strength and ductility of Al-Mg-Si alloys with fl"-Mg5Si6 at cryogenic temperatures

被引：1
|
作者：
Lei, Gang [1 ,2 ]
Gao, Hai-tao [1 ,2 ,3 ]
Zhang, Yun [1 ,2 ]
Cui, Xiao-hui [1 ,2 ,3 ]
Yu, Hai-lian [1 ,2 ,3 ]
机构：
[1] Cent South Univ, Sch Mech & Elect Engn, Changsha 410083, Peoples R China
[2] Cent South Univ, State Key Lab Precis Mfg, Extreme Serv Performance, Changsha 410083, Peoples R China
[3] Cent South Univ, Light Alloy Res Inst, Changsha 410083, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2023年 / 33卷 / 10期
基金：
中国国家自然科学基金;
关键词：
molecular dynamics; aluminum alloy; beta' phase; strength; ductility; cryogenic temperature; MECHANICAL-PROPERTIES; CRYSTAL-STRUCTURE; MG17AL12; PRECIPITATE; YIELD STRENGTH; BETA'' PHASE; MICROSTRUCTURE; DEFORMATION; ALUMINUM; CU; DEPENDENCE;
D O I：
10.1016/S1003-6326(23)66309-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influences of fl '' phase volume fractions (PVF) and cryogenic temperatures on nanomechanical properties of Al-Mg-Si alloys were simulated by molecular dynamics. The simulation results show that when the beta' ' PVF is 0.107 at 77 K, the peak stress of Al-Mg-Si alloy is increased by 97.05% compared to that of pure aluminum. When the beta' ' PVF is 0.107, the peak stress of the sample at 27 K is increased by up to 23.55% compared to peak stress of sample at 300 K. Cryogenic environments help to enhance total dislocation density, allowing samples to withstand greater stress, which can provide additional strength and ductility. Temperature decrease can also appreciably inhibit the initiation and growth of voids (growth rate is decreased by 88.5% at 27 K), which contributes to the enhanced ductility.
引用
收藏
页码：2943 / 2954
页数：12
相关论文
共 50 条
  • [1] The effect of alloying elements on the ductility of Al-Mg-Si alloys
    Remoe, Magnus S.
    Marthinsen, Knut
    Westermann, Ida
    Pedersen, Ketill
    Royset, Jostein
    Marioara, Calin
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 693 : 60 - 72
  • [2] Influence of Mg/Si ratio on the mechanical strength and electrical conductivity of Al-Mg-Si alloys
    Dong, Qipeng
    Wang, Runzhi
    Wang, Jiuhe
    Nagaumi, Hiromi
    MATERIALS TODAY COMMUNICATIONS, 2025, 42
  • [3] Enhanced strength-conductivity trade-off in Al-Mg-Si alloys with optimized Mg/Si ratio
    Dong, Qipeng
    Zhang, Yi
    Wang, Jiuhe
    Huang, Lijun
    Nagaumi, Hiromi
    JOURNAL OF ALLOYS AND COMPOUNDS, 2024, 970
  • [4] Development of ultrafine grained Al-Mg-Si alloy with enhanced strength and ductility
    Panigrahi, Sushanta Kumar
    Jayaganthan, R.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 470 (1-2) : 285 - 288
  • [5] A model for the precipitate transformation of Mg-Si-rich clusters into Mg5Si6 β" in Al-Mg-Si aluminum alloys
    Shan, Y., V
    Redermeier, A.
    Kahlenberg, R.
    Kozeschnik, E.
    MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2024, 32 (07)
  • [6] Flow behavior and fracture of Al-Mg-Si alloy at cryogenic temperatures
    Camilo Magalhaes, Danielle Cristina
    Kliauga, Andrea Madeira
    Sordi, Vitor Luiz
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2021, 31 (03) : 595 - 608
  • [7] Optimizing the strength-ductility balance of microalloyed Al-Mg-Si casting alloys
    Luo, T. R.
    Fan, Z. Z.
    Hu, H. X.
    Tian, Y. Z.
    MATERIALS LETTERS, 2025, 378
  • [8] Enhancement in Strength and Ductility of Al-Mg-Si alloy by Cryorolling followed by Warm rolling
    Rao, P. Nageswara
    Kaurwar, Amritha
    Singh, Dharmendra
    Jayaganthan, R.
    INTERNATIONAL CONFERENCE ON MATERIALS FOR ADVANCED TECHNOLOGIES (ICMAT2013), SYMPOSIUM W - ADVANCED STRUCTURAL AND FUNCTIONAL MATERIALS FOR PROTECTION, 2014, 75 : 123 - 128
  • [9] Atomic Structure of Hardening Precipitates in Al-Mg-Si Alloys: Influence of Minor Additions of Cu and Zn
    Bartawi, Emad H.
    Marioara, Calin D.
    Shaban, Ghada
    Hatzoglou, Constantinos
    Holmestad, Randi
    Ambat, Rajan
    ACS NANO, 2023, 17 (23) : 24115 - 24129
  • [10] Simultaneously increased strength and ductility via the hierarchically heterogeneous structure of Al-Mg-Si alloys/nanocomposite
    Geng, Run
    Zhao, Qinglong
    Qiu, Feng
    Jiang, Qichuan
    MATERIALS RESEARCH LETTERS, 2020, 8 (06): : 225 - 231
12345