Publication detail

Electron Beam Welds of Austenitic Stainless Steels and ODS steels

HAVLÍK, P. ŠOHAJ, P.

Original Title

Electron Beam Welds of Austenitic Stainless Steels and ODS steels

English Title

Electron Beam Welds of Austenitic Stainless Steels and ODS steels

Type

conference paper

Language

en

Original Abstract

Ensuring the weldability of advanced heat resistant ODS metallic materials in combination with conventional materials is a prior requirement for their wider use in energy production. The microstructure of ODS steels is composed of alpha iron based matrix with dispersed oxide particles. Due to heating during conventional welding, the microstructure and properties of the resulting weld joints are affected and the joints often become the weakest point of the structure. The electron beam welding with its reduced heat affected zone size may be an answer in this. The presented article is focused on the metallographic evaluation of the structure of heterogeneous electron beam welds which combine austenitic stainless steels with the MA956 ODS steel. EB welded joints were evaluated by light and analytical electron microscopy in the as-welded state and after post-weld heat treatment. Mechanical properties of the weld were evaluated from the results of microhardness profiles. Achieving an appropriate structure of such welds and correct welding parameters are crucial aspects for future successful application of similar joints in energy industry.

English abstract

Ensuring the weldability of advanced heat resistant ODS metallic materials in combination with conventional materials is a prior requirement for their wider use in energy production. The microstructure of ODS steels is composed of alpha iron based matrix with dispersed oxide particles. Due to heating during conventional welding, the microstructure and properties of the resulting weld joints are affected and the joints often become the weakest point of the structure. The electron beam welding with its reduced heat affected zone size may be an answer in this. The presented article is focused on the metallographic evaluation of the structure of heterogeneous electron beam welds which combine austenitic stainless steels with the MA956 ODS steel. EB welded joints were evaluated by light and analytical electron microscopy in the as-welded state and after post-weld heat treatment. Mechanical properties of the weld were evaluated from the results of microhardness profiles. Achieving an appropriate structure of such welds and correct welding parameters are crucial aspects for future successful application of similar joints in energy industry.

Keywords

electron beam welds, ODS steel, oxide particles, heterogeneous joints

RIV year

2013

Released

14.08.2013

ISBN

978-80-87294-39-0

Book

METAL 2013 Conference proceedings

Edition

1

Pages from

-

Pages to

-

Pages count

6

Documents

BibTex


@inproceedings{BUT101041,
  author="Petr {Havlík} and Pavel {Šohaj}",
  title="Electron Beam Welds of Austenitic Stainless Steels and ODS steels",
  annote="Ensuring the weldability of advanced heat resistant ODS metallic materials in combination with conventional materials is a prior requirement for their wider use in energy production. The microstructure of ODS steels is composed of alpha iron based matrix with dispersed oxide particles. Due to heating during conventional welding, the microstructure and properties of the resulting weld joints are affected and the joints often become the weakest point of the structure. The electron beam welding with its reduced heat affected zone size may be an answer in this. The presented article is focused on the metallographic evaluation of the structure of heterogeneous electron beam welds which combine austenitic stainless steels with the MA956 ODS steel. EB welded joints were evaluated by light and analytical electron microscopy in the as-welded state and after post-weld heat treatment. Mechanical properties of the weld were evaluated from the results of microhardness profiles. Achieving an appropriate structure of such welds and correct welding parameters are crucial aspects for future successful application of similar joints in energy industry.",
  booktitle="METAL 2013 Conference proceedings",
  chapter="101041",
  edition="1",
  howpublished="print",
  year="2013",
  month="august",
  pages="----",
  type="conference paper"
}