Publication detail

The Effect of Arc Current on Microstructure and Mechanical Properties of Hybrid LasTIG Welds of High-Strength Low-Alloy Steels

ŠEBESTOVÁ, H. HORNÍK, P. MRŇA, L. DOLEŽAL, P. MIKMEKOVÁ, E.

Original Title

The Effect of Arc Current on Microstructure and Mechanical Properties of Hybrid LasTIG Welds of High-Strength Low-Alloy Steels

Type

journal article in Web of Science

Language

English

Original Abstract

A hybrid laser-tungsten inert gas (LasTIG) welding system was applied for 3-mm-thick S460MC and S700MC high-strength low-alloy steel sheet butt welding with the aim to reduce the cooling rate compared with laser welding. The effect of the electric current was evaluated. Increasing arc current led to the increase of fused metal and heat-affected-zone (HAZ) dimensions. Fused metal grains were larger whereas the microhardness increase toward the base metal was lower at higher currents in this region. Microhardness peaks corresponding to the coarse-grained HAZ were reduced at higher currents for S460MC but were almost not affected in S700MC. The tensile strength of both the laser weld and LasTIG welds was comparable to the base metal for both alloys.

Keywords

Heat affected zone, High strength alloys, High strength steel, Inert gases, Metals, Microhardness, Steel metallurgy, Steel structures, Tensile strength, Welding

Authors

ŠEBESTOVÁ, H.; HORNÍK, P.; MRŇA, L.; DOLEŽAL, P.; MIKMEKOVÁ, E.

Released

17. 4. 2018

Publisher

Springer US

ISBN

1073-5615

Periodical

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE

Year of study

49

Number

6

State

United States of America

Pages from

3559

Pages to

3569

Pages count

11

URL

https://link.springer.com/article/10.1007%2Fs11663-018-1385-6

BibTex

@article{BUT155510,
  author="Hana {Šebestová} and Petr {Horník} and Libor {Mrňa} and Pavel {Doležal} and Eliška {Materna Mikmeková}",
  title="The Effect of Arc Current on Microstructure and Mechanical Properties of Hybrid LasTIG Welds of High-Strength Low-Alloy Steels",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE",
  year="2018",
  volume="49",
  number="6",
  pages="3559--3569",
  doi="10.1007/s11663-018-1385-6",
  issn="1073-5615",
  url="https://link.springer.com/article/10.1007%2Fs11663-018-1385-6"
}