MECHANICAL PROPERTIES AND MICROSTRUCTURE OF ULTRAFINE-GRAINED MAGNESIUM ALLOYS CONTAINING NEODYMIUM AND ZINC

被引：0

作者：

Sasek, Stanislav ^{[1
]}

Straska, Jitka ^{[1
]}

Minarik, Peter ^{[1
]}

Bohlen, Jan ^{[2
]}

Kubasek, Jiri ^{[3
]}

机构：

[1] Charles Univ Prague, Dept Phys Mat, Prague, Czech Republic

[2] Helmholtz Zentrum Geesthacht, Magnesium Innovat Ctr, Geesthacht, Germany

[3] Univ Chem & Technol Prague, Fac Chem Technol, Dept Met & Corros Engn, Prague, Czech Republic

来源：

28TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS (METAL 2019) | 2019年

关键词：

Magnesium alloys; ultra-fine grained materials; equal channel angular pressing; electron backscatter diffraction; HIGH-TEMPERATURE OXIDATION; HIGH-PRESSURE TORSION; PRINCIPLES; BEHAVIOR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two experimental magnesium alloys containing neodymium and zinc (Mg-5Nd-1Zn and Mg-1Nd-1Zn) were processed by severe plastic deformation (SPD) method - equal channel angular pressing (ECAP). The effect of SPD processing on the microstructure was studied by light microscopy (LM) and scanning electron microscopy (SEM) including electron backscatter diffraction (EBSD). A significant grain refinement was observed after 8 passes of ECAP in both alloys resulting in homogenous ultra-fine grained condition. Microstructure evolution significant affected mechanical properties, which were studied by microhardness measurements and compression deformation tests. Both yield compression strength sigma 0.2 and microhardness significantly increased after ECAP when compared to the extruded or as-cast counterparts.

引用

页码：1291 / 1296

页数：6

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