Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites

Nikhilesh Chawla, J. J. Williams, R. Saha

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

A novel, low-cost sinter-forging approach to processing particle reinforced metal matrix composites for high-performance applications was examined. The microstructure of the sinter-forged composites exhibited relatively uniform distribution of SiC particles, which appeared to be somewhat aligned perpendicular to the forging direction. The degree of alignment and interparticle bond strength was not as high as that observed for the extruded composite. The sinter-forged composite exhibited higher Young's modulus and ultimate tensile strength than the extruded material, but lower strain-to-failure. The higher modulus and strength were attributed to the absence of any significant processing-induced particle fracture, while the lower strain-to-failure was caused by poorer matrix interparticle bonding compared to the extruded material. Fatigue behavior of sinter-forged composites was similar to that of the extruded material. Fe-rich inclusions were extremely detrimental to fatigue life. Cleaner processing, which eliminated the inclusions, enhanced the fatigue life of the sinter-forged composites to levels similar to that of the extruded material.

Original languageEnglish (US)
Pages (from-to)215-227
Number of pages13
JournalJournal of Light Metals
Volume2
Issue number4
DOIs
StatePublished - Nov 2002

Fingerprint

Aluminum
aluminum
microstructure
Microstructure
composite materials
Composite materials
matrices
forging
fatigue life
Fatigue of materials
Forging
inclusions
Processing
cleaners
metal matrix composites
tensile strength
modulus of elasticity
alignment
Tensile strength
Elastic moduli

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites. / Chawla, Nikhilesh; Williams, J. J.; Saha, R.

In: Journal of Light Metals, Vol. 2, No. 4, 11.2002, p. 215-227.

Research output: Contribution to journalArticle

@article{70c567f477564925bbe099cd170eed0f,
title = "Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites",
abstract = "A novel, low-cost sinter-forging approach to processing particle reinforced metal matrix composites for high-performance applications was examined. The microstructure of the sinter-forged composites exhibited relatively uniform distribution of SiC particles, which appeared to be somewhat aligned perpendicular to the forging direction. The degree of alignment and interparticle bond strength was not as high as that observed for the extruded composite. The sinter-forged composite exhibited higher Young's modulus and ultimate tensile strength than the extruded material, but lower strain-to-failure. The higher modulus and strength were attributed to the absence of any significant processing-induced particle fracture, while the lower strain-to-failure was caused by poorer matrix interparticle bonding compared to the extruded material. Fatigue behavior of sinter-forged composites was similar to that of the extruded material. Fe-rich inclusions were extremely detrimental to fatigue life. Cleaner processing, which eliminated the inclusions, enhanced the fatigue life of the sinter-forged composites to levels similar to that of the extruded material.",
author = "Nikhilesh Chawla and Williams, {J. J.} and R. Saha",
year = "2002",
month = "11",
doi = "10.1016/S1471-5317(03)00005-1",
language = "English (US)",
volume = "2",
pages = "215--227",
journal = "Metallurgical Transactions A (Physical Metallurgy and Materials Science)",
issn = "1073-5623",
publisher = "Springer Boston",
number = "4",

}

TY - JOUR

T1 - Mechanical behavior and microstructure characterization of sinter-forged SiC particle reinforced aluminum matrix composites

AU - Chawla, Nikhilesh

AU - Williams, J. J.

AU - Saha, R.

PY - 2002/11

Y1 - 2002/11

N2 - A novel, low-cost sinter-forging approach to processing particle reinforced metal matrix composites for high-performance applications was examined. The microstructure of the sinter-forged composites exhibited relatively uniform distribution of SiC particles, which appeared to be somewhat aligned perpendicular to the forging direction. The degree of alignment and interparticle bond strength was not as high as that observed for the extruded composite. The sinter-forged composite exhibited higher Young's modulus and ultimate tensile strength than the extruded material, but lower strain-to-failure. The higher modulus and strength were attributed to the absence of any significant processing-induced particle fracture, while the lower strain-to-failure was caused by poorer matrix interparticle bonding compared to the extruded material. Fatigue behavior of sinter-forged composites was similar to that of the extruded material. Fe-rich inclusions were extremely detrimental to fatigue life. Cleaner processing, which eliminated the inclusions, enhanced the fatigue life of the sinter-forged composites to levels similar to that of the extruded material.

AB - A novel, low-cost sinter-forging approach to processing particle reinforced metal matrix composites for high-performance applications was examined. The microstructure of the sinter-forged composites exhibited relatively uniform distribution of SiC particles, which appeared to be somewhat aligned perpendicular to the forging direction. The degree of alignment and interparticle bond strength was not as high as that observed for the extruded composite. The sinter-forged composite exhibited higher Young's modulus and ultimate tensile strength than the extruded material, but lower strain-to-failure. The higher modulus and strength were attributed to the absence of any significant processing-induced particle fracture, while the lower strain-to-failure was caused by poorer matrix interparticle bonding compared to the extruded material. Fatigue behavior of sinter-forged composites was similar to that of the extruded material. Fe-rich inclusions were extremely detrimental to fatigue life. Cleaner processing, which eliminated the inclusions, enhanced the fatigue life of the sinter-forged composites to levels similar to that of the extruded material.

UR - http://www.scopus.com/inward/record.url?scp=0036876714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036876714&partnerID=8YFLogxK

U2 - 10.1016/S1471-5317(03)00005-1

DO - 10.1016/S1471-5317(03)00005-1

M3 - Article

AN - SCOPUS:0036876714

VL - 2

SP - 215

EP - 227

JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)

JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)

SN - 1073-5623

IS - 4

ER -