Accelerated and enhanced aging hardening response of the pre-aged and HPT-processed Mg-Zn-Y alloy by HAADF-STEM

被引:10
作者
Li, Yansheng [1 ]
Wang, Jinhui [1 ]
Liu, Xiaohuan [1 ]
Man, Yi [1 ]
Xu, Rui [1 ]
机构
[1] Yanshan Univ, Coll Mat Sci & Engn, State Key Lab Metastable Mat Sci & Technol, Hebei Key Lab Optimizing Met Prod Technol & Perfo, Qinhuangdao 066004, Hebei, Peoples R China
基金
中国国家自然科学基金;
关键词
Magnesium alloy; Aging hardening; High pressure torsion (HPT); Microstructure; Grain boundaries; Nanocrystalline materials; THERMAL-STABILITY; MICROSTRUCTURE; PHASE;
D O I
10.1016/j.matlet.2019.127096
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The age hardening response of nanocrystalline Mg-Zn-Y alloy processed by a combination of aging treatment (T6) and high pressure torsion (HPT) was systematically investigated by HAADF-STEM. The results show that T6 + HPT-processed Mg-Zn-Y alloy exhibits distinct age hardening behaviour during aging at 90 degrees C, which is also the lowest temperature for strengthening Mg alloy by age treatment. The hardness increases sharply during the early period of aging at 200 degrees C, and the peak hardness reaches a maximum of similar to 135 HV after 2 h, indicating that HPT can significantly accelerate and enhance the second artificial aging response. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页数:4
相关论文
共 16 条
[1]   Current research progress in grain refinement of cast magnesium alloys: A review article [J].
Ali, Yahia ;
Qiu, Dong ;
Jiang, Bin ;
Pan, Fusheng ;
Zhang, Ming-Xing .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 619 :639-651
[2]   Short-circuit diffusion in an ultrafine-grained copper-zirconium alloy produced by equal channel angular pressing [J].
Amouyal, Y. ;
Divinski, S. V. ;
Estrin, Y. ;
Rabkin, E. .
ACTA MATERIALIA, 2007, 55 (17) :5968-5979
[3]   Grain Boundary Phenomena in an Ultrafine-Grained Al-Zn Alloy with Improved Mechanical Behavior for Micro-Devices [J].
Chinh, Nguyen Q. ;
Valiev, Ruslan Z. ;
Sauvage, Xavier ;
Varga, Gabor ;
Havancsak, Karoly ;
Kawasaki, Megumi ;
Straumal, Boris B. ;
Langdon, Terence G. .
ADVANCED ENGINEERING MATERIALS, 2014, 16 (08) :1000-1009
[4]   Role of multi-microalloying by rare earth elements in ductilization of magnesium alloys [J].
Huang, Yuanding ;
Gan, Weimin ;
Kainer, Karl Ulrich ;
Hort, Norbert .
JOURNAL OF MAGNESIUM AND ALLOYS, 2014, 2 (01) :1-7
[5]   Rapidly solidified powder metallurgy Mg97Zn1Y2Alloys with excellent tensile yield strength above 600 MPa [J].
Kawamura, Y ;
Hayashi, K ;
Inoue, A ;
Masumoto, T .
MATERIALS TRANSACTIONS, 2001, 42 (07) :1172-1176
[6]   Recent magnesium alloy development for elevated temperature applications [J].
Luo, AA .
INTERNATIONAL MATERIALS REVIEWS, 2004, 49 (01) :13-30
[7]  
OConnor P. A. G., 2021, NAT MED, DOI [DOI 10.1038/s41591-020-0897-1, 10.1080/09669582.2021.1879821]
[8]   Ultrafine Grained Structures Resulting from SPD-Induced Phase Transformation in Al-Zn Alloys [J].
Sauvage, Xavier ;
Murashkin, Maxim Yu. ;
Straumal, Boris B. ;
Bobruk, Elena V. ;
Valiev, Ruslan Z. .
ADVANCED ENGINEERING MATERIALS, 2015, 17 (12) :1821-1827
[9]  
Song GL, 1999, ADV ENG MATER, V1, P11, DOI 10.1002/(SICI)1527-2648(199909)1:1<11::AID-ADEM11>3.0.CO
[10]  
2-N