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

页码：491 / 500

页数：10

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