3d-visualization of magnesium strengthening mechanisms for a description of experimentally obtained data of alloying effect in Mg-Ga system

作     者：J.A.Khokhlova M.A.Khokhlov J.A.Khokhlova;M.A.Khokhlov

作者机构：Paton Electric Welding Institute of National Academy of Sciences of UkraineKyivUkraine 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2020年第8卷第2期

页      面：546-551页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Magnesium Gallium Alloying Strengthening Atom 3d 

摘      要：Based on laws of theory of materials strengthening were discribed the experimentally obtained alloying effect in Mg-Ga system and shown using program for 3d atomic *** known from our experiments a homogeneouswavymicrostructure of the diffusion zone forms as result of mass-transfer of molten gallium into the volume of magnesium *** chemical composition shows Mg 65%*** Ga 35%*** X-ray spectra diffraction data-Mg5Ga2 intermetallic phase *** intermetallic diffusion zone provides the significant strengthening effect of microstructure which was determined experimentally by the indentation *** 3-d visualization shows the reaction and changing of an original crystal structure of magnesium atomic lattice upon diffusion doping with foreign atoms of gallium and then is shown the coalescence of Mg5Ga2 intermetallic crystal with crystals surfaces of ***,investigated Mg-alloy strengthening at alloying with Ga explained by two main *** first is the formation of intermetallic phases with the ordering and consolidation of the crystal structure of the matrix by the ligature atoms,which is the key factor of the strengthening mechanism fixed ***,when hexagonal and orthorhombic atomic structures growth according to their spatial type,a significant disorientation of structural fragments occurs,an increase in the density of the amorphous transition layer,a twinning of the structure in the interphase boundaries,which leads to the formation of intrinsic mutual deformation and a high level of internal stresses.