Large plasticity of a Mg_(42)Li_(23)Cu_(25)Y_(10) multiphase composite

S. Gonzalez; D.V. Louzguine-Luzgin; J.H. Perepezko; A. Inoue

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Large plasticity of a Mg_(42)Li_(23)Cu_(25)Y_(10) multiphase composite

机译：Mg_（42）Li_（23）Cu_（25）Y_（10）多相复合材料的大可塑性

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A novel Mg_(42)Li_(23)Cu_(25)Y_(10) nanostructure-bcc ductile phase composite containing a Mg_2Cu phase and amorphous zones has been obtained by injection casting. This alloy exhibits a large plastic engineer ing strain of 83% and plastic true strain of 177% with a flow stress at 4.3% deformation of 425 MPa. During compression, the deformation of the nanometer size bcc particles occurs by grain boundary slid ing accommodated by flow controlled by grain boundary diffusion at room temperature. The hierarchical multiphase microstructure design allows for the operation and interaction of different shear deformation bands to provide large plastic strain at high strength.

机译：通过注入铸造获得了一种新型的Mg_（42）Li_（23）Cu_（25）Y_（10）纳米结构-bcc延性相复合材料，该复合材料含有Mg_2Cu相和非晶区。该合金表现出83％的大塑性工程应变和177％的塑性真应变，在425 MPa变形时的流动应力为4.3％。在压缩过程中，在室温下，由晶界扩散控制的流动调节了晶界滑动，从而使纳米级bcc颗粒发生变形。分层的多相微结构设计允许不同剪切变形带的操作和相互作用，以提供高强度的大塑性应变。

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来源
《Materials Science and Engineering》 |2011年第17期|p.5576-5584|共9页
作者
S. Gonzalez; D.V. Louzguine-Luzgin; J.H. Perepezko; A. Inoue;
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作者单位

WPI-Advaced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan;

WPI-Advaced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan;

Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA;

WPI-Advaced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan;

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原文格式 PDF
正文语种 eng
中图分类
关键词
magnesium alloys; mechanical characterization; plasticity;

机译：镁合金;力学性能;塑性;

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Large plasticity of a Mg_(42)Li_(23)Cu_(25)Y_(10) multiphase composite

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