Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment
Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment
复制标题
焊后时效处理对Fe-Ni基合金焊件析出及力学行为的影响
DOI：
10.1016/j.msea.2018.01.127
复制
发表时间：
2018-03
期刊：
影响因子：
--
通讯作者：
Lijian Rong
中科院分区：
文献类型：
--
作者：
Shegnhu Chen;Honglei Hu;Mingjiu Zhao;Lijian Rong
研究了Fe-Ni基合金焊件在焊后时效状态下的析出和力学行为。显微组织分析表明，γ'相在熔合区枝晶组织中分布不均匀，表现为γ'相在枝晶间析出，而γ'相在枝晶芯部形成贫化区。在拉伸过程中，枝晶的定向生长和枝晶组织中γ'相的不均匀分布共同作用下，钉头区出现枝晶-枝晶间界面的解理。枝晶核心和枝晶间区域之间的氢脆敏感性的明显差异导致了预充氢焊件对解理裂纹的更高敏感性。
Precipitation and mechanical behavior of Fe-Ni based alloy weldment in the post-weld aging condition were investigated in the present work. Microstructural analysis showed that an inhomogeneous distribution of γ' phase was present in the dendritic structure of fusion zone, exhibiting that γ' phase were precipitated in the interdendritic region while a γ' phase depletion zone was developed in the dendrite core. Cleavage of the dendritic-interdendritic boundaries could be found in the nail-head region by the combined effects of directional growth of dendrite and inhomogenous distribution of γ' phase in the dendritic structure during tensile test. Distinct differences in the hydrogen embrittlement susceptibility between the dendrite core and the interdendritic region led to a higher sensitivity to cleavage cracking in the hydrogen-precharged weldment.
登录
查看更多内容
影响因子：
5.4
作者：
N. Moody;M. Baskes;S. Robinson;M. Perra
通讯作者：
N. Moody;M. Baskes;S. Robinson;M. Perra
DOI：
10.1147/rd.445.0668
发表时间：
1996-09
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
V. L. Acoff;R. Thompson
通讯作者：
V. L. Acoff;R. Thompson
晶粒尺寸对沉淀强化Fe-Ni基合金氢脆敏感性的影响
DOI：
10.1016/j.msea.2013.11.062
发表时间：
2014-01-31
影响因子：
6.4
作者：
Chen, Shenghu;Zhao, Mingjiu;Rong, Lijian
通讯作者：
Rong, Lijian
DOI：
10.1016/j.msea.2015.06.087
发表时间：
2015-08-26
影响因子：
6.4
作者：
Chamanfar, A.;Jahazi, M.;Firoozrai, A.
通讯作者：
Firoozrai, A.
影响因子：
1.6
作者：
Ola, O. T.;Ojo, O. A.;Chaturvedi, M. C.
通讯作者：
Chaturvedi, M. C.