Effect of heat input on phase content, crystalline lattice parameter, and residual strain in wire-feed electron beam additive manufactured 304 stainless steel

Sergei Yu Tarasov, Andrey V. Filippov, Nikolai L. Savchenko, Sergey V. Fortuna, Valery E. Rubtsov, Evgenii A. Kolubaev, Sergey G. Psakhie

Research output: Contribution to journalArticle

Abstract

Structural and mechanical characterization of electron beam additive manufactured stainless steel samples has been carried out. The XRD measured austenite and ferrite lattice parameters showed their sensitivity to the heat input value, which was related to the chromium atom redistribution. The ferrite content depended on the heat input too. Optimal heat input level has been detected, which allowed obtaining the tensile strength higher than that of the base stainless steel. Residual strain levels in the as-deposited metal and fusion line zone have been measured using the X-ray sin2ψ method. The highest tensile residual strain was determined in a fusion line zone between the first as-deposited layer and a substrate. The microstructure of the first fusion line zone contained deformation twins and entangled dislocations generated by plastic flow under thermal expansion-contraction cycles.

Original languageEnglish
Pages (from-to)2353-2363
Number of pages11
JournalInternational Journal of Advanced Manufacturing Technology
Volume99
Issue number9-12
DOIs
Publication statusPublished - 1 Dec 2018

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Lattice constants
Electron beams
Fusion reactions
Stainless steel
Wire
Crystalline materials
Ferrite
Plastic flow
Austenite
Thermal expansion
Chromium
Tensile strength
X rays
Atoms
Microstructure
Substrates
Metals
Hot Temperature

Keywords

  • Heat input
  • Lattice parameter
  • Stainless steel
  • Twinning
  • Wire-feed electron beam additive manufacturing

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

Cite this

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title = "Effect of heat input on phase content, crystalline lattice parameter, and residual strain in wire-feed electron beam additive manufactured 304 stainless steel",
abstract = "Structural and mechanical characterization of electron beam additive manufactured stainless steel samples has been carried out. The XRD measured austenite and ferrite lattice parameters showed their sensitivity to the heat input value, which was related to the chromium atom redistribution. The ferrite content depended on the heat input too. Optimal heat input level has been detected, which allowed obtaining the tensile strength higher than that of the base stainless steel. Residual strain levels in the as-deposited metal and fusion line zone have been measured using the X-ray sin2ψ method. The highest tensile residual strain was determined in a fusion line zone between the first as-deposited layer and a substrate. The microstructure of the first fusion line zone contained deformation twins and entangled dislocations generated by plastic flow under thermal expansion-contraction cycles.",
keywords = "Heat input, Lattice parameter, Stainless steel, Twinning, Wire-feed electron beam additive manufacturing",
author = "Tarasov, {Sergei Yu} and Filippov, {Andrey V.} and Savchenko, {Nikolai L.} and Fortuna, {Sergey V.} and Rubtsov, {Valery E.} and Kolubaev, {Evgenii A.} and Psakhie, {Sergey G.}",
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language = "English",
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TY - JOUR

T1 - Effect of heat input on phase content, crystalline lattice parameter, and residual strain in wire-feed electron beam additive manufactured 304 stainless steel

AU - Tarasov, Sergei Yu

AU - Filippov, Andrey V.

AU - Savchenko, Nikolai L.

AU - Fortuna, Sergey V.

AU - Rubtsov, Valery E.

AU - Kolubaev, Evgenii A.

AU - Psakhie, Sergey G.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Structural and mechanical characterization of electron beam additive manufactured stainless steel samples has been carried out. The XRD measured austenite and ferrite lattice parameters showed their sensitivity to the heat input value, which was related to the chromium atom redistribution. The ferrite content depended on the heat input too. Optimal heat input level has been detected, which allowed obtaining the tensile strength higher than that of the base stainless steel. Residual strain levels in the as-deposited metal and fusion line zone have been measured using the X-ray sin2ψ method. The highest tensile residual strain was determined in a fusion line zone between the first as-deposited layer and a substrate. The microstructure of the first fusion line zone contained deformation twins and entangled dislocations generated by plastic flow under thermal expansion-contraction cycles.

AB - Structural and mechanical characterization of electron beam additive manufactured stainless steel samples has been carried out. The XRD measured austenite and ferrite lattice parameters showed their sensitivity to the heat input value, which was related to the chromium atom redistribution. The ferrite content depended on the heat input too. Optimal heat input level has been detected, which allowed obtaining the tensile strength higher than that of the base stainless steel. Residual strain levels in the as-deposited metal and fusion line zone have been measured using the X-ray sin2ψ method. The highest tensile residual strain was determined in a fusion line zone between the first as-deposited layer and a substrate. The microstructure of the first fusion line zone contained deformation twins and entangled dislocations generated by plastic flow under thermal expansion-contraction cycles.

KW - Heat input

KW - Lattice parameter

KW - Stainless steel

KW - Twinning

KW - Wire-feed electron beam additive manufacturing

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U2 - 10.1007/s00170-018-2643-0

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JO - International Journal of Advanced Manufacturing Technology

JF - International Journal of Advanced Manufacturing Technology

SN - 0268-3768

IS - 9-12

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