Hydrogen-induced Modification in the Deformation and Fracture of a Precipitation-hardened Fe-Ni Based Austenitic Alloy

被引：0

作者：

Mingjiu Zhao ^{[1
]}

Zifeng Guo ^{[2
]}

Shenghu Chen ^{[1
]}

Hao Liang ^{[3
]}

Lijian Rong ^{[1
]}

机构：

[1] Institute of Metal Research,Chinese Academy of Sciences

[2] Shougang Research Institute of Technology,Shougang Group

[3] Institute of System Engineering,China Academy of Engineering and Physics

来源：

JournalofMaterialsScience&Technology | 2014年 / 30卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Hydrogen; Deformation; Fracture; Precipitation-hardened austenitic alloy;

D O I：

暂无

中图分类号：

TG141 [黑色金属材料];

学科分类号：

080502 ;

摘要：

Hydrogen-induced modification in the deformation and fracture of a precipitation-hardened Fe e Ni based austenitic alloy has been investigated in the present study by means of thermal hydrogen charging experiment, tensile tests, scanning electron microscopy(SEM) and transmission electron microscopy(TEM). It is found that the g0 particles are subjected to the multiple shearing by dislocations during plastic deformation,which promotes the occurrence of the dislocation planar slip. Moreover, the alloy will be enhanced by hydrogen resulting in the formation of strain localization at macroscale. So, the mechanisms of deformation and fracture in the alloy have been proposed in terms of serious hydrogen-induced planar slip at microscale which can lead to macroscopic strain localization.

引用

页码：1155 / 1159

页数：5

共 5 条

[1] Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286[J] . M.J. Zhao,Z.F. Guo,H. Liang,L.J. Rong.Materials Science & Engineering A . 2010 (21)
[2] The role of localized deformation in hydrogen-assisted crack propagation in 21Cr–6Ni–9Mn stainless steel[J] . K.A. Nibur,B.P. Somerday,D.K. Balch,C. San Marchi.Acta Materialia . 2009 (13)
[3] On the effect of hydrogen on plastic instabilities in metals
Liang, Y
Sofronis, P
Aravas, N
[J]. ACTA MATERIALIA, 2003, 51 (09) : 2717 - 2730
[4] Hydrogen effects on the character of dislocations in high-purity aluminum
Ferreira, PJ
Robertson, IM
Birnbaum, HK
[J]. ACTA MATERIALIA, 1999, 47 (10) : 2991 - 2998
[5] Hydrogen effects on the interaction between dislocations[J] . P.J. Ferreira,I.M. Robertson,H.K. Birnbaum.Acta Materialia . 1997 (5)

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