High strain-rate behaviour of a Tungsten alloy

被引：4
|
作者：
Cadoni, Ezio [1 ]
Dotta, Matteo [1 ]
Forni, Daniele [1 ]
机构：
[1] Univ Appl Sci Southern Switzerland, DynaMat Lab, Campus SUPSI Trevano, CH-6952 Canobbio, Switzerland
来源：
1ST VIRTUAL EUROPEAN CONFERENCE ON FRACTURE - VECF1 | 2020年 / 28卷
关键词：
High strain-rate; tensile; Split Hopkinson Tensile Bar; tungsten alloy;
D O I：
10.1016/j.prostr.2020.11.070
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Tungsten alloys are often used in machinery and in other industrial sectors. This study presents the dynamic tensile behaviour of a commercial tungsten alloy. The tests were carried-out at high strain-rate (from 850 to 2200 s(-1)) by means of a Split Hopkinson Tension Bar device on round specimens having diameter and gauge length of 2 mm and 5 mm, respectively. The dynamic stress versus strain curves were compared with the quasi-static ones in order to investigate the rate-dependency of this alloy. High strain rate caused a growth of proof and ultimate tensile strengths as well as modulus of toughness and a decrease of the area reduction. Finally, the parameters of the Cowper-Symonds relationship were calibrated. (C) 2020 The Authors. Published by Elsevier B.V.
引用
收藏
页码：964 / 970
页数：7
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