Publication result detail

Analysis of Acoustic Emission Signals during Tensile Deformation of Fe-Si Steels with Various Silicon Contents

KHAN, S.; CHIVAVIBUL, P.; SEDLÁK, P.; ARAI, S.; ENOKI, M.

Original Title

Analysis of Acoustic Emission Signals during Tensile Deformation of Fe-Si Steels with Various Silicon Contents

English Title

Analysis of Acoustic Emission Signals during Tensile Deformation of Fe-Si Steels with Various Silicon Contents

Type

WoS Article

Original Abstract

A systematic investigation was performed on the deformation mechanism of Fe-Si steels with various silicon contents (2, 3, and 4.5 wt pct Si) by analyzing frequency distribution of acoustic emission (AE) coupling with fracture surface observation. AE signals were recorded during tensile tests at room temperature (RT) and at an elevated temperature of (473 K) 200C. The results showed that both yield strength and tensile strength of Fe-Si steels increased with increasing silicon contents, whereas failure strain decreased. Increasing silicon content also increased the brittle fracture mode of the steels, especially at RT. In contrast, all specimens failed by ductile fracture mode at 473 K (200C). Frequency analysis showed that AE signals generated during tensile deformation were mainly distributed into two ranges, i.e., low (250 to 550 kHz) and high (550 to 750 kHz) frequency ranges. These generated AE signals were correlated with various types of observed deformation mechanisms. The low and high frequency signals corresponded to breaking and/or debonding of inclusions and twinning/cleavage fracture.

English abstract

A systematic investigation was performed on the deformation mechanism of Fe-Si steels with various silicon contents (2, 3, and 4.5 wt pct Si) by analyzing frequency distribution of acoustic emission (AE) coupling with fracture surface observation. AE signals were recorded during tensile tests at room temperature (RT) and at an elevated temperature of (473 K) 200C. The results showed that both yield strength and tensile strength of Fe-Si steels increased with increasing silicon contents, whereas failure strain decreased. Increasing silicon content also increased the brittle fracture mode of the steels, especially at RT. In contrast, all specimens failed by ductile fracture mode at 473 K (200C). Frequency analysis showed that AE signals generated during tensile deformation were mainly distributed into two ranges, i.e., low (250 to 550 kHz) and high (550 to 750 kHz) frequency ranges. These generated AE signals were correlated with various types of observed deformation mechanisms. The low and high frequency signals corresponded to breaking and/or debonding of inclusions and twinning/cleavage fracture.

Keywords

Acoustic emission signal; Deformation mechanism; Elevated temperature; Frequency Analysis; Frequency distributions; Low and high frequencies; Systematic investigations; Tensile deformation

Key words in English

Acoustic emission signal; Deformation mechanism; Elevated temperature; Frequency Analysis; Frequency distributions; Low and high frequencies; Systematic investigations; Tensile deformation

Authors

KHAN, S.; CHIVAVIBUL, P.; SEDLÁK, P.; ARAI, S.; ENOKI, M.

RIV year

2014

Released

01.08.2013

Publisher

Springer

ISBN

1073-5623

Periodical

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

Volume

44

Number

8

State

United States of America

Pages from

3623

Pages to

3634

Pages count

12

BibTex

@article{BUT101808,
  author="Sabrina A. {Khan} and Pornthep {Chivavibul} and Petr {Sedlák} and Satoshi {Arai} and Manabu {Enoki}",
  title="Analysis of Acoustic Emission Signals during Tensile Deformation of Fe-Si Steels with Various Silicon Contents",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE",
  year="2013",
  volume="44",
  number="8",
  pages="3623--3634",
  doi="10.1007/s11661-013-1729-4",
  issn="1073-5623"
}