Microstructural changes in an extruded Mg-Zn-Y alloy reinforced by quasicrystalline I-phase by small additions of calcium, manganese and cerium-rich mischmetal

被引：21

作者：

Medina, J. ^{[1
]}

Perez, P. ^{[1
]}

Garces, G. ^{[1
]}

Tolnai, D. ^{[2
]}

Stark, A. ^{[2
]}

Schell, N. ^{[3
]}

Adeva, P. ^{[1
]}

机构：

[1] Natl Ctr Met Res CENIM CSIC, Dept Met Phys, Avda Gregorio Amo 8, Madrid 28040, Spain

[2] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany

[3] DESY, Helmholtz Zentrum Geesthacht Outstn, Struct Res New Mat, Hamburg, Germany

来源：

MATERIALS CHARACTERIZATION | 2016年 / 118卷

关键词：

Mg-Zn-Y alloy; Microstructural characterization; Alloying influence; In-situ; Synchrotron radiation diffraction; X-ray diffraction; MECHANICAL-PROPERTIES; AS-CAST; CE; MAGNESIUM; BEHAVIOR; TEXTURE; CREEP; RATIO;

D O I：

10.1016/j.matchar.2016.05.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of calcium, manganese and cerium-rich mischmetal additions on the microstructure and texture of the extruded Mg-6Zn-1Y (wt.%) alloy have been investigated. The microstructure of the alloys consisted of a magnesium matrix embedding second phase particles aligned along the extrusion direction. The nature and volume fraction of the second phases depended on the alloying element. Thus, Ce-rich mischmetal promoted the formation of T-phase while calcium additions resulted in the formation of a ternary Mg-Zn-Ca compound. Only, manganese additions did not affect the existence of the I-phase present in the ternary alloy. The texture was measured and it was found that calcium addition has a significant effect weakening the extrusion texture. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：186 / 198

页数：13

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