Microstructure and mechanical properties of flash butt welding joint of high nitrogen austenitic stainless steel

Y. Yu; Q. J. Ji; H. F. Yang; X. J. Cui; H. Y. Zhao; Y. H. Ding

doi:10.1088/1742-6596/1777/1/012002

Microstructure and mechanical properties of flash butt welding joint of high nitrogen austenitic stainless steel

Y. Yu
, Q. J. Ji
, H. F. Yang^*
, X. J. Cui
, H. Y. Zhao
, Y. H. Ding

^*Corresponding author for this work

Changchun University of Technology
Harbin Institute of Technology
Harbin Institute of Technology Weihai
Beijing University of Technology

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The microstructure and properties of high nitrogen stainless steel welded joints under different flash currents were studied by flash butt welding. The results show that, the flash welding parameters have obvious influence on the joint structure and mechanical properties. The joint is organized into symmetrical distribution, and the grains obtained in the interface area are small, mostly pearlite and ferrite. With the increase of flash current, grain coarsening in overheated zone (OZ) and welding zone (WZ) of joint, which was mainly attributed to the increase of welding heat input. Martensite exists on both sides of the weld, in which the hardness reaches the peak. The tensile strength of welded parts can reach up to 97% of the base material, and the fracture is in the form of ductile fracture.

Original language	English
Article number	012002
Journal	Journal of Physics: Conference Series
Volume	1777
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1777/1/012002
State	Published - 17 Feb 2021
Externally published	Yes
Event	9th Global Conference on Materials Science and Engineering, CMSE 2020 - Kyiv, Ukraine Duration: 20 Nov 2020 → 23 Nov 2020

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10.1088/1742-6596/1777/1/012002

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title = "Microstructure and mechanical properties of flash butt welding joint of high nitrogen austenitic stainless steel",

abstract = "The microstructure and properties of high nitrogen stainless steel welded joints under different flash currents were studied by flash butt welding. The results show that, the flash welding parameters have obvious influence on the joint structure and mechanical properties. The joint is organized into symmetrical distribution, and the grains obtained in the interface area are small, mostly pearlite and ferrite. With the increase of flash current, grain coarsening in overheated zone (OZ) and welding zone (WZ) of joint, which was mainly attributed to the increase of welding heat input. Martensite exists on both sides of the weld, in which the hardness reaches the peak. The tensile strength of welded parts can reach up to 97\% of the base material, and the fracture is in the form of ductile fracture.",

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T1 - Microstructure and mechanical properties of flash butt welding joint of high nitrogen austenitic stainless steel

AU - Yu, Y.

AU - Ji, Q. J.

AU - Yang, H. F.

AU - Cui, X. J.

AU - Zhao, H. Y.

AU - Ding, Y. H.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2021/2/17

Y1 - 2021/2/17

N2 - The microstructure and properties of high nitrogen stainless steel welded joints under different flash currents were studied by flash butt welding. The results show that, the flash welding parameters have obvious influence on the joint structure and mechanical properties. The joint is organized into symmetrical distribution, and the grains obtained in the interface area are small, mostly pearlite and ferrite. With the increase of flash current, grain coarsening in overheated zone (OZ) and welding zone (WZ) of joint, which was mainly attributed to the increase of welding heat input. Martensite exists on both sides of the weld, in which the hardness reaches the peak. The tensile strength of welded parts can reach up to 97% of the base material, and the fracture is in the form of ductile fracture.

AB - The microstructure and properties of high nitrogen stainless steel welded joints under different flash currents were studied by flash butt welding. The results show that, the flash welding parameters have obvious influence on the joint structure and mechanical properties. The joint is organized into symmetrical distribution, and the grains obtained in the interface area are small, mostly pearlite and ferrite. With the increase of flash current, grain coarsening in overheated zone (OZ) and welding zone (WZ) of joint, which was mainly attributed to the increase of welding heat input. Martensite exists on both sides of the weld, in which the hardness reaches the peak. The tensile strength of welded parts can reach up to 97% of the base material, and the fracture is in the form of ductile fracture.

UR - https://www.scopus.com/pages/publications/85102487526

U2 - 10.1088/1742-6596/1777/1/012002

DO - 10.1088/1742-6596/1777/1/012002

M3 - 会议文章

AN - SCOPUS:85102487526

SN - 1742-6588

VL - 1777

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

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M1 - 012002

T2 - 9th Global Conference on Materials Science and Engineering, CMSE 2020

Y2 - 20 November 2020 through 23 November 2020

ER -

Microstructure and mechanical properties of flash butt welding joint of high nitrogen austenitic stainless steel

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