Deformation twinning in a nanocrystalline hcp Mg alloy

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2011-02-01 DOI:10.1016/j.scriptamat.2010.10.024

X.L. Wu , K.M. Youssef , C.C. Koch , S.N. Mathaudhu , L.J. Kecskés , Y.T. Zhu

引用次数: 116

Abstract

Nanocrystalline (nc) hexagonal close-packed (hcp) metals are rarely observed to deform by twinning, which is contrary to face-centered cubic metals. Here we report that, after alloying Mg with 10 at.% Ti, deformation twins are observed in an nc Mg–Ti alloy processed by mechanical attrition. The formation of deformation twins is attributed to the alloying effect, which may change the energy path for twinning. These results point to a promising approach to design nc hcp alloys for superior mechanical properties.

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纳米晶hcp镁合金的变形孪晶

纳米晶(nc)六方密排(hcp)金属很少观察到孪生变形，这与面心立方金属相反。这里我们报道，在Mg合金中加入10at。在机械摩擦加工的Mg-Ti合金中，观察到变形孪晶。变形孪晶的形成归因于合金效应，合金效应可能改变孪晶的能量路径。这些结果为设计具有优异力学性能的数控hcp合金指明了一条有前途的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.