Effects of Sc(Zr) on the microstructure and mechanical properties of as-cast Al-Mg alloys

被引：22

作者：

Pan, D. ^{[1
]}

Zhou, S. ^{[1
]}

Zhang, Z. ^{[1
,2
]}

Li, M. ^{[1
]}

Wu, Y. ^{[1
,2
]}

机构：

[1] Hefei Univ Technol, Hefei 230009, Peoples R China

[2] Lab Nonferrous Met Mat & Proc Engn Anhui Prov, Hefei 230009, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2017年 / 33卷 / 06期

关键词：

Al-Mg-Sc-Zr; Al-3(Sc; Zr); Eutectic; Multilayer structure; Refining grain strengthening; SC-ZR ALLOYS; ALUMINUM-ALLOYS; CORRELATIVE CHARACTERIZATION; TEMPORAL EVOLUTION; PRIMARY PARTICLES; AL(SC; ZR); ALLOYS; COOLING RATE; HIGH-LEVEL; BEHAVIOR; SCANDIUM;

D O I：

10.1080/02670836.2016.1270573

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Both the addition of 0.6% Sc and simultaneous addition of 0.2% Sc and 0.1% Zr exerted a remarkable effect on grain refinement of as-cast Al-Mg alloys, changing typical dendritic microstructure into fine equiaxed grains. Such effect was found to be related to the formation of primary particles, which acted as heterogeneous nucleation sites for alpha-Al matrix during solidification. Primary particles formed in Al-Mg-Sc-Zr alloy could be identified as the eutectic structure consisting of multilayer of 'Al-3(Sc, Zr) + alpha-Al + Al-3(Sc, Zr)', with a 'cellular-dendritic' mode of growth. In addition, an attractive comprehensive property of as-cast Al-5Mg alloy due to the addition of 0.2% Sc and 0.1% Zr was obtained.

引用

页码：751 / 757

页数：7

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