Effect of beam oscillation on borated stainless steel electron beam welds

被引：3

作者：

RajaKumar, Guttikonda ^{[1
,2
]}

Ram, G. D. Janaki

Rao, S. R. Koteswara

机构：

[1] Sree Kavitha Engn Coll, Karepally, AP, India

[2] Tagore Engn Coll, Dept Mech Engn, Madras 600127, Tamil Nadu, India

来源：

MATERIALS TESTING | 2015年 / 57卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Borated stainless steel; EBW; GTAW; beam oscillation;

D O I：

10.3139/120.110740

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Borated stainless steels are used in nuclear power plants to control neutron criticality in reactors as control rods, shielding material, spent fuel storage racks and transportation casks. In this study, bead on plate welds were made using gas tungsten arc welding (GTAW) and electron beam welding (EBW) processes. Electron beam welds made using beam oscillation technique exhibited higher tensile strength values compared to that of GTA welds. Electron beam welds were found to show fine dendritic microstructure while GTA welds exhibited larger dendrites. While both processes produced defect free welds, GTA welds are marked by partially melted zone (PMZ) where the hardness is low. EBW obviate the PMZ failure due to low heat input and in case of high heat input GTA welding process failure occurs in the PMZ.

引用

页码：489 / 494

页数：6

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