Effect of dwelling time in VIM furnace on chemical composition and mechanical properties of a Ni–Fe–Cr alloy

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Effect of dwelling time in VIM furnace on chemical composition and mechanical properties of a Ni–Fe–Cr alloy. / Moshtaghi, Masoud; Safyari, Mahdieh.
In: Vacuum, Vol. 169.2019, No. November, 108890, 11.2019.

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Moshtaghi M, Safyari M. Effect of dwelling time in VIM furnace on chemical composition and mechanical properties of a Ni–Fe–Cr alloy. Vacuum. 2019 Nov;169.2019(November):108890. Epub 2019 Aug 23. doi: 10.1016/j.vacuum.2019.108890

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@article{92548f54831849f4a7e46746f0033385,
title = "Effect of dwelling time in VIM furnace on chemical composition and mechanical properties of a Ni–Fe–Cr alloy",
abstract = "The mechanical properties and changes in chemical compositions and microstructure of a Ni–Fe–Cr alloy in different dwelling time in a vacuum induction melting (VIM) furnace were studied. The chemical analysis shows that the dissipations of Al, Ti and Si increase with increasing the dwelling time in the VIM furnace. With the decrease in Si content due to increasing the dwelling time in the VIM furnace, the segregation of niobium is reduced, resulting in lower incoherent δ phase in the grain boundaries. This incoherent δ phase promotes intergranular fracture in the specimen with the lowest dwelling time. The dissipations of Al and Ti with increasing the dwelling time in the VIM furnace lead to decrease the hardness, yield and ultimate tensile strengths of the alloy, while the elongation increases owing to the lower number of inclusions and strengthening phase (γ″).",
author = "Masoud Moshtaghi and Mahdieh Safyari",
year = "2019",
month = nov,
doi = "10.1016/j.vacuum.2019.108890",
language = "English",
volume = "169.2019",
journal = "Vacuum",
issn = "0042-207X",
publisher = "Elsevier",
number = "November",

}

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TY - JOUR

T1 - Effect of dwelling time in VIM furnace on chemical composition and mechanical properties of a Ni–Fe–Cr alloy

AU - Moshtaghi, Masoud

AU - Safyari, Mahdieh

PY - 2019/11

Y1 - 2019/11

N2 - The mechanical properties and changes in chemical compositions and microstructure of a Ni–Fe–Cr alloy in different dwelling time in a vacuum induction melting (VIM) furnace were studied. The chemical analysis shows that the dissipations of Al, Ti and Si increase with increasing the dwelling time in the VIM furnace. With the decrease in Si content due to increasing the dwelling time in the VIM furnace, the segregation of niobium is reduced, resulting in lower incoherent δ phase in the grain boundaries. This incoherent δ phase promotes intergranular fracture in the specimen with the lowest dwelling time. The dissipations of Al and Ti with increasing the dwelling time in the VIM furnace lead to decrease the hardness, yield and ultimate tensile strengths of the alloy, while the elongation increases owing to the lower number of inclusions and strengthening phase (γ″).

AB - The mechanical properties and changes in chemical compositions and microstructure of a Ni–Fe–Cr alloy in different dwelling time in a vacuum induction melting (VIM) furnace were studied. The chemical analysis shows that the dissipations of Al, Ti and Si increase with increasing the dwelling time in the VIM furnace. With the decrease in Si content due to increasing the dwelling time in the VIM furnace, the segregation of niobium is reduced, resulting in lower incoherent δ phase in the grain boundaries. This incoherent δ phase promotes intergranular fracture in the specimen with the lowest dwelling time. The dissipations of Al and Ti with increasing the dwelling time in the VIM furnace lead to decrease the hardness, yield and ultimate tensile strengths of the alloy, while the elongation increases owing to the lower number of inclusions and strengthening phase (γ″).

U2 - 10.1016/j.vacuum.2019.108890

DO - 10.1016/j.vacuum.2019.108890

M3 - Article

VL - 169.2019

JO - Vacuum

JF - Vacuum

SN - 0042-207X

IS - November

M1 - 108890

ER -