Study of the effect of calcium on structure, physicomechanical and technological properties of deformable alloy Al-3%Mg-0.8%Mn

被引:0
作者
Doroshenko, V. V. [1 ]
Aksenov, A. A. [1 ]
Tsydenov, K. A. [2 ]
Strekalina, D. M. [1 ]
Yakushko, E. V. [1 ]
Gorlov, L. E. [2 ]
机构
[1] Moscow Polytech Univ, Moscow, Russia
[2] Univ Sci & Technol MISIS, Moscow, Russia
关键词
Magnesium; Calcium; Deformation; Recrystallization; Strength; Corrosion; 669.017; PHASE-COMPOSITION; SYSTEM; FE; CA; NI; MICROSTRUCTURE; DESIGN; MN;
D O I
10.1007/s11015-024-01774-7
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
In this work the effect of 2% calcium on the structure, deformability and physicomechanical properties of Al-3%Mg-0.8%Mn alloy is investigated. A hot rolling temperature of 400 degrees C for the alloy with calcium without prior homogenization appeared to be low, resulting in cold rolled sheets containing multiple defects, in contrast to a refrence alloy without calcium. During homogenization annealing at 550 degrees C aluminum-calcium eutectic is highly fragmented, which facilitates rolling. Evaluation of alloy with calcium resistance to recrystallization shows that hot-rolled sheets begin to lose strength after 250 degrees C, while for cold-rolled sheets this temperature is limited to 200 degrees C. Cold-rolled sheets of Al-3%Mg-0.8%Mn alloy also have a temperature for the start of recrystallization of 250 degrees C, which is associated with liberation during hot rolling of nanosized dispersoids of Al6(Mn, Fe) phase, which as a result of heterogenization at 550 degrees C have micron sizes. At the same time, cold-rolled sheets with added calcium have higher hardness and yield strength after one-hour annealing at 400 degrees C (71/61 HV and 124/107 MPa). Relative elongation is also better for alloy with added calcium. It is also shown that calcium addition increases corrosion current density from 0.71<middle dot>105 to 0.92<middle dot>105 A/m2, while its value remains at the level for AMg5 alloy or grade 5182 alloy.
引用
收藏
页码:683 / 691
页数:9
相关论文
共 35 条
[1]   Understanding the corrosion behaviour of Al-Mg alloy fabricated using a Laser Powder Bed Fusion (L-PBF) Additive Manufacturing (AM) process [J].
Ahuir-Torres, Juan Ignacio ;
Gibbons, Gregory J. ;
West, Geoff ;
Das, Amit ;
Kotadia, Hiren R. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 969
[2]   New in-situ Al matrix composites based on Al-Ni-La eutectic [J].
Akopyan, T. K. ;
Belov, N. A. ;
Naumova, E. A. ;
Letyagin, N., V .
MATERIALS LETTERS, 2019, 245 :110-113
[3]   Description of the New Eutectic Al-Ca-Cu System in the Aluminum Corner [J].
Akopyan, Torgom K. ;
Belov, Nikolay A. ;
Letyagin, Nikolay V. ;
Cherkasov, Stanislav O. ;
Nguen, Xuan D. .
METALS, 2023, 13 (04)
[4]   Evolution of dispersoids during multistep heat treatments and their effect on rolling performance in an Al-5% Mg-0.8% Mn alloy [J].
Algendy, Ahmed Y. ;
Liu, Kun ;
Chen, X. Grant .
MATERIALS CHARACTERIZATION, 2021, 181
[5]   Eutectic alloys based on the Al-Zn-Mg-Ca system: microstructure, phase composition and hardening [J].
Belov, N. ;
Naumova, E. ;
Akopyan, T. .
MATERIALS SCIENCE AND TECHNOLOGY, 2017, 33 (06) :656-666
[6]   The Effect of Thermodeformation Treatment on the Structure and Strengthening of the Al-7.1% Zn-2.8% Mg-1.4% Ni-1.1% Fe Alloy Produced via Casting in an Electromagnetic Crystallizer [J].
Belov, N. A. ;
Timofeev, V. N. ;
Cherkasov, S. O. ;
Motkov, M. M. ;
Musin, A. F. .
PHYSICS OF METALS AND METALLOGRAPHY, 2023, 124 (04) :414-421
[7]   Comparison of the Effect of Ni, Mn, Fe, and Si Additives on the Microstructure and Phase Composition of Hypereutectic Aluminum-Calcium Alloys [J].
Belov, N. A. ;
Naumova, E. A. ;
Doroshenko, V. V. ;
Barykin, M. A. .
RUSSIAN JOURNAL OF NON-FERROUS METALS, 2022, 63 (01) :71-80
[8]  
Belov N. A., 2016, EUTECTIC ALLOYS BASE
[9]   Casting alloys of the Al-Ce-Ni system: microstructural approach to alloy design [J].
Belov, NA ;
Naumova, EA ;
Eskin, DG .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 271 (1-2) :134-142
[10]   Effect of eutectic phases on the fracture behavior of high-strength castable aluminum alloys [J].
Belov, NA .
METAL SCIENCE AND HEAT TREATMENT, 1995, 37 (5-6) :237-242