Nanomechanics of Mg-Gd-Y-Nd-Zn alloy with LPSO and MgRE phases

被引:3
作者
Vafaeenezhad, H. [1 ]
Aliakbari-Sani, S. [2 ]
Kalaki, A. [3 ]
Ebrahimi, G. R. [1 ]
Hirsch, J. [4 ,5 ]
机构
[1] Ferdowsi Univ Mashhad, Engn Fac, Dept Mat Sci & Engn, Azadi Sq, Mashhad, Iran
[2] Hakim Sabzevari Univ, Dept Mat Engn, Sabzevar, Iran
[3] Amirkabir Univ Technol, Dept Mat & Met Engn, Tehran Polytech, Hafez Ave, Tehran, Iran
[4] Samara Natl Res Univ, Dept Met Technol & Aviat Mat, Moskovskoye Shosse 34, Samara 443086, Russia
[5] Hydro Aluminium Rolled Prod GmbH, Res & Dev, D-53117 Bonn, Germany
关键词
Long period stacking ordered (LPSO) phase; Nanoindentation; Elastic-plastic behavior; Finite element method (FEM); Fracture toughness; Strain rate sensitivity (SRS); STRAIN-RATE SENSITIVITY; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; PILE-UP; SINK-IN; DYNAMIC RECRYSTALLIZATION; DEFORMATION-BEHAVIOR; PLASTIC INDENTATION; METALLIC-GLASS; HEAT-TREATMENT;
D O I
10.1016/j.jma.2024.07.016
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The mechanical properties of two main precipitating phases (LPSO and MgRE) and matrix in Mg-Gd-Y-Nd-Zn bioalloy were examined using nanoindentation method. A new is suggested for characterizing the elastic-plastic behavior, fracture toughness and strain rate sensitivity (SRS) of materials within micro/nanoscale. Firstly, a nanomechanical model was developed for extracting hardness (H), young's modulus (E) and yield stress (sigma Y) sigma Y ) from the characteristic load points which were subsequently analyzed by atomic force microscope (AFM) images. The elasticity data and AFM data were then utilized for determination of plastic deformation in constituent phases. The displacement of the indentation gets the highest value for Mg matrix and between precipitates, depth is more in LPSO rather than that of MgRE. The serrated flow or the behavior of shear bands may originate from the side effect of the interface region in Mg alloys with precipitates. It can be deduced that the KIC produced by both L method and energy-based calculation are both reliable for K IC approximation. The maximum load in simulation with mu= 0.2 friction is marginally lesser than that of the frictionless ( mu= 0) one while elastic recovery of indentation with mu= 0.2 is higher to some extent. (c) 2024 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ ) Peer review under responsibility of Chongqing University
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页码:3370 / 3393
页数:24
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