Strength and Fracture Behavior of Ultrathin Pt Wires

被引：2

作者：

Akanda, M. A. Salam ^{[1
]}

Tohmyoh, Hironori ^{[2
]}

机构：

[1] Bangladesh Univ Engn & Technol, Dept Mech Engn, Dhaka 1000, Bangladesh

[2] Tohoku Univ, Dept Nanomech, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 2013年 / 180卷 / 02期

关键词：

mechanical properties; ultrathin wire; tensile test; fracture stress; yield stress; brittle fracture; ULTRAHIGH-STRENGTH; NANOWIRES; NANOTUBES;

D O I：

10.1007/s10704-013-9805-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrathin metallic wires having defects may show much lower strength compared to the strength of the wire material. To characterize ultrathin Pt wires having the nominal diameter of 625 nm, tensile test of the wires was performed by developing a testing platform and a gripping technology. Fracture stress determined by the tensile test showed much higher value compared with that of bulk Pt. However, the fracture stress of some of the wires was lower than the yield stress of the wire determined by the bending test. From the observation of the fracture surfaces, it was found that the lower fracture stress of the wires was due to the defects in the wires and such wires showed brittle fracture behavior.

引用

页码：269 / 274

页数：6

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