Publication detail

Influence of post weld heat treatments on structure of electron beam welds of Ti-6Al-4V alloy

HAVLÍK, P. KOUŘIL, J. FORET, R.

Original Title

Influence of post weld heat treatments on structure of electron beam welds of Ti-6Al-4V alloy

Type

conference paper

Language

English

Original Abstract

Electron beam (EB) welding belongs among the most appropriate welding methods for joining of titanium alloys mainly due to the advantages which are resulting from the using of this method. The required presence of vacuum during EB process may lenghten the overall processing time, but also provide protective enviroment which is necessary for the quality welds of titanium alloys. The precision control of EB welding process allows irradiating the workpiece by EB with high density of energy. This reduces the quanitity of heat input to the material and results in deep and narrow welds with the minimum heat affected zone. In many materials this can lead to the formation of significant thermal stresses during solidification of weld metal which can promote the nucleation of cracks. The post-weld heat treatment (PWHT) may be used to eliminate these stresses. In this article the microstructure and microhardness of EB welds of Ti-6Al-4V alloy is studied. The welds are evaluated in the as-welded state and after five different modes of the PWHT. Additionally, the presence and distribution of defects was examined depending on the used parameters of EB irradiation.

Keywords

electron beam welding; titanium alloys; post-weld heat treatment

Authors

HAVLÍK, P.; KOUŘIL, J.; FORET, R.

RIV year

2015

Released

28. 5. 2015

Publisher

Brno University of Technology, Antonínská 548/1, 601 90 Brno

Location

Velké Bílovice

ISBN

978-80-214-5146-9

Book

MULTI-SCALE DESIGN OF ADVANCED MATERIALS CONFERENCE PROCEEDINGS

Pages from

131

Pages to

138

Pages count

8

URL

http://imse.fme.vutbr.cz/images/umvi/aktuality/bilovice_2015/sbornik_velke_bilovice_2015.pdf

BibTex

@inproceedings{BUT114902,
  author="Petr {Havlík} and Jan {Kouřil} and Rudolf {Foret}",
  title="Influence of post weld heat treatments on structure of electron beam welds of Ti-6Al-4V alloy",
  booktitle="MULTI-SCALE DESIGN OF ADVANCED MATERIALS CONFERENCE PROCEEDINGS",
  year="2015",
  pages="131--138",
  publisher="Brno University of Technology, Antonínská 548/1, 601 90 Brno",
  address="Velké Bílovice",
  isbn="978-80-214-5146-9",
  url="http://imse.fme.vutbr.cz/images/umvi/aktuality/bilovice_2015/sbornik_velke_bilovice_2015.pdf"
}