NANO-STRUCTURAL AND NANO-CHEMICAL ANALYSIS OF NI-BASE ALLOY/LOW ALLOY STEEL DISSIMILAR METAL WELD INTERFACES

被引：23
|
作者：
Choi, Kyoung Joon [1 ]
Shin, Sang Hun [1 ]
Kim, Jung Jin [1 ]
Jung, Ju Ang [1 ]
Kim, Ji Hyun [1 ]
机构：
[1] UNIST, Interdisciplinary Sch Green Energy, Ulsan Metropolitan City 689798, South Korea
来源：
NUCLEAR ENGINEERING AND TECHNOLOGY | 2012年 / 44卷 / 05期
关键词：
Dissimilar Metal Weld; Scanning Electron Microscope; Secondary Ion Mass Spectrometry; Transmission Electron Microscope; 3-Dimensional Atom Probe Tomography; A533; Gr; B; Alloy; 152; Stress Corrosion Cracking; MECHANICAL PROPERTY; STAINLESS-STEEL; BEHAVIOR; CRACKING; REGION; JOINT;
D O I：
10.5516/NET.07.2012.009
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The dissimilar metal joints welded between Ni-based alloy, Alloy 690 and low alloy steel, A533 Gr. B with Alloy 152 filler metal were characterized by using optical microscope, scanning electron microscope, transmission electron microscope, secondary ion mass spectrometry and 3-dimensional atom probe tomography. It was found that in the weld root region, the weld was divided into several regions including unmixed zone in Ni-base alloy, fusion boundary, and heat-affected zone in the low alloy steel. The result of nanostructural and nanochemical analyses in this study showed the non-homogeneous distribution of elements with higher Fe but lower Mn, Ni and Cr in A533 Gr. B compared with Alloy 152, and the precipitation of carbides near the fusion boundary.
引用
收藏
页码：491 / 500
页数：10
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