Effect of hydrogen charging on the mechanical properties of advanced high strength steels
Effect of hydrogen charging on the mechanical properties of advanced high strength steels
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DOI：
10.1016/j.ijhydene.2013.12.190
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发表时间：
2014-03-18
影响因子：
7.2
通讯作者：
Verbeken, K.
中科院分区：
文献类型：
--
作者：
Depover, T.;Escobar, D. Perez;Verbeken, K.
本文通过缺口试样的拉伸试验，研究了氢对四种多相高强钢力学性能的影响。这是通过在5毫米/分钟的交叉位移速度下对充氢和不充氢样品进行力学测试来完成的。观察到相当大的氢影响，延展性下降了8-60%。为了证明扩散氢的影响，改变了实验装置中的一些参数。拉伸试验后，进行断口分析。结果表明，充氢使断口附近的断口由延性断口向穿晶解理断口转变，断口中心附近有一个向延性断口过渡的断口。Copyright (C) 2014, Hydrogen Energy Publications， LLC.由Elsevier Ltd.出版。版权所有。
The present work investigates the influence of hydrogen on the mechanical properties of four multiphase high strength steels by means of tensile tests on notched samples. This was done by performing mechanical tests on both hydrogen charged and uncharged specimens at a cross-head displacement speed of 5 mm/min. A considerable hydrogen influence was observed, as the ductility dropped by 8-60%. In order to demonstrate the influence of diffusible hydrogen, some parameters in the experimental set-up were varied. After tensile tests, fractography was performed. It was found that hydrogen charging caused a change from ductile to transgranular cleavage failure near the notch with a transition zone to a fracture surface with ductile features near the centre. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.