Optimization of process parameters for spark plasma sintering of nano-structured ferritic Fe-18Cr-2Si alloy

Ihsan ul Haq Toor; Junaid Ahmed; M. A. Hussein; N. Al-Aqeeli

doi:10.1016/j.powtec.2016.05.041

Optimization of process parameters for spark plasma sintering of nano-structured ferritic Fe-18Cr-2Si alloy

Ihsan ul Haq Toor^*, Junaid Ahmed, M. A. Hussein, N. Al-Aqeeli

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Spark plasma sintering (SPS) process parameters were optimized in terms of densification, microhardness and corrosion resistance to develop a nano-structured Fe-18Cr-2Si ferritic alloy. The powders were mechanically alloyed (MA) in a planetary ball mill and subsequently SPS was carried out under different processing conditions. Powders and sintered samples were characterized using X-Ray Diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD phase evolution studies on ball milled powders confirmed the formation of a crystallized alloy after 100 h milling. XRD of sintered alloy confirmed the development of a nano-structured ferritic alloy with a crystallite size in the range of 20–40 nm. Maximum densification of 96.0%, Vickers hardness of 710 HV and pitting potential (E_pit = − 430 mV_SCE) was achieved at a sintering temperature of 1100 °C, for 15 min holding time, at 50 °C/min of heating rate and at an applied pressure of 60 MPa.

Original language	English
Pages (from-to)	62-70
Number of pages	9
Journal	Powder Technology
Volume	299
DOIs	https://doi.org/10.1016/j.powtec.2016.05.041
State	Published - 1 Oct 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

Corrosion
Mechanical alloying
Spark plasma sintering
Stainless steel alloys
X-Ray Diffraction

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.powtec.2016.05.041

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title = "Optimization of process parameters for spark plasma sintering of nano-structured ferritic Fe-18Cr-2Si alloy",

abstract = "Spark plasma sintering (SPS) process parameters were optimized in terms of densification, microhardness and corrosion resistance to develop a nano-structured Fe-18Cr-2Si ferritic alloy. The powders were mechanically alloyed (MA) in a planetary ball mill and subsequently SPS was carried out under different processing conditions. Powders and sintered samples were characterized using X-Ray Diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD phase evolution studies on ball milled powders confirmed the formation of a crystallized alloy after 100 h milling. XRD of sintered alloy confirmed the development of a nano-structured ferritic alloy with a crystallite size in the range of 20–40 nm. Maximum densification of 96.0%, Vickers hardness of 710 HV and pitting potential (Epit = − 430 mVSCE) was achieved at a sintering temperature of 1100 °C, for 15 min holding time, at 50 °C/min of heating rate and at an applied pressure of 60 MPa.",

keywords = "Corrosion, Mechanical alloying, Spark plasma sintering, Stainless steel alloys, X-Ray Diffraction",

author = "Toor, {Ihsan ul Haq} and Junaid Ahmed and Hussein, {M. A.} and N. Al-Aqeeli",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = oct,

day = "1",

doi = "10.1016/j.powtec.2016.05.041",

language = "English",

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T1 - Optimization of process parameters for spark plasma sintering of nano-structured ferritic Fe-18Cr-2Si alloy

AU - Toor, Ihsan ul Haq

AU - Ahmed, Junaid

AU - Hussein, M. A.

AU - Al-Aqeeli, N.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Spark plasma sintering (SPS) process parameters were optimized in terms of densification, microhardness and corrosion resistance to develop a nano-structured Fe-18Cr-2Si ferritic alloy. The powders were mechanically alloyed (MA) in a planetary ball mill and subsequently SPS was carried out under different processing conditions. Powders and sintered samples were characterized using X-Ray Diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD phase evolution studies on ball milled powders confirmed the formation of a crystallized alloy after 100 h milling. XRD of sintered alloy confirmed the development of a nano-structured ferritic alloy with a crystallite size in the range of 20–40 nm. Maximum densification of 96.0%, Vickers hardness of 710 HV and pitting potential (Epit = − 430 mVSCE) was achieved at a sintering temperature of 1100 °C, for 15 min holding time, at 50 °C/min of heating rate and at an applied pressure of 60 MPa.

AB - Spark plasma sintering (SPS) process parameters were optimized in terms of densification, microhardness and corrosion resistance to develop a nano-structured Fe-18Cr-2Si ferritic alloy. The powders were mechanically alloyed (MA) in a planetary ball mill and subsequently SPS was carried out under different processing conditions. Powders and sintered samples were characterized using X-Ray Diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). XRD phase evolution studies on ball milled powders confirmed the formation of a crystallized alloy after 100 h milling. XRD of sintered alloy confirmed the development of a nano-structured ferritic alloy with a crystallite size in the range of 20–40 nm. Maximum densification of 96.0%, Vickers hardness of 710 HV and pitting potential (Epit = − 430 mVSCE) was achieved at a sintering temperature of 1100 °C, for 15 min holding time, at 50 °C/min of heating rate and at an applied pressure of 60 MPa.

KW - Corrosion

KW - Mechanical alloying

KW - Spark plasma sintering

KW - Stainless steel alloys

KW - X-Ray Diffraction

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U2 - 10.1016/j.powtec.2016.05.041

DO - 10.1016/j.powtec.2016.05.041

M3 - Article

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SN - 0032-5910

VL - 299

SP - 62

EP - 70

JO - Powder Technology

JF - Powder Technology

ER -

Optimization of process parameters for spark plasma sintering of nano-structured ferritic Fe-18Cr-2Si alloy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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