Correlation between Critical Temperature and Strength of Small-Scale bcc Pillars

被引：236

作者：

Schneider, A. S. ^{[3
]}

Kaufmann, D. ^{[2
]}

Clark, B. G. ^{[1
,3
]}

Frick, C. P. ^{[4
]}

Gruber, P. A. ^{[5
]}

Moenig, R. ^{[2
]}

Kraft, O. ^{[2
,5
]}

Arzt, E. ^{[1
,6
]}

机构：

[1] INM, Leibniz Inst New Mat, D-66123 Saarbrucken, Germany

[2] Forschungszentrum Karlsruhe, Inst Mat Forsch 2, D-76344 Eggenstein Leopoldshafen, Germany

[3] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[4] Univ Wyoming, Dept Mech Engn, Laramie, WY 82071 USA

[5] Univ Karlsruhe, Inst Zuverlassigkeit Bauteilen & Syst, D-76131 Karlsruhe, Germany

[6] Univ Saarland, D-66123 Saarbrucken, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 10期

关键词：

CENTERED-CUBIC METALS; SINGLE-CRYSTALS; FLOW-STRESS; DEFORMATION; PLASTICITY; DEPENDENCE; ALLOYS;

D O I：

10.1103/PhysRevLett.103.105501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Microcompression tests were performed on focused-ion-beam-machined micropillars of several body-centered-cubic metals (W, Mo, Ta, and Nb) at room temperature. The relationship between yield strength and pillar diameter as well as the deformation morphologies were found to correlate with a parameter specific for bcc metals, i.e., the critical temperature T-c. This finding sheds new light on the phenomenon of small-scale plasticity in largely unexplored non-fcc metals.

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页数：4

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