Enhancement of plasticity in Ti-rich Ti-Zr-Be-Cu-Ni-Ta bulk glassy alloy via introducing the structural inhomogeneity

被引：19

作者：

Park, Jin Man ^{[1
]}

Kim, Do Hyang ^{[1
]}

Kim, Ki Buem ^{[2
]}

Fleury, Eric ^{[3
]}

Lee, Min Ha ^{[4
]}

Kim, Won Tae ^{[5
]}

Eckert, Juergen ^{[6
,7
]}

机构：

[1] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea

[2] Sejong Univ, Dept Adv Mat Engn, Seoul 143747, South Korea

[3] Korea Inst Sci & Technol, Adv Met Res Ctr, Seoul 130650, South Korea

[4] Korea Inst Ind Technol, Adv Mat Div, Inchon 406840, South Korea

[5] Cheongju Univ, Div Appl Sci, Cheongju 360764, South Korea

[6] Inst Complex Mat, Leibniz Inst Solid State & Mat Res Dresden, D-01171 Dresden, Germany

[7] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

来源：

JOURNAL OF MATERIALS RESEARCH | 2008年 / 23卷 / 11期

关键词：

D O I：

10.1557/JMR.2008.0357

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of microstructural inhomogeneities with different length scale on the plasticity of (Ti45Zr16Be20Cu10Ni9)(100-x) Ta-x (x = 0, 5, and 10) bulk glassy alloys has been studied. The formation of specific heterogeneous microstructures with a different type of structural inhomogeneity, i.e., short-/medium-range ordered clusters or micrometer-scale ductile dendrites combined with a glassy matrix, evolved by appropriately tuning the alloy chemistry, improves the room temperature plasticity Lip to similar to 12.5% and similar to 15%, respectively. The pronouncedly enhanced plasticity is mainly attributed to the retardation of shear localization and multiplication of shear bands by controlling the plastic and failure instabilities otherwise responsible for premature failure.

引用

页码：2984 / 2989

页数：6

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