Silicon carbide particulates incorporated into microalloyed steel surface using TIG: microstructure and properties

P. Munoz-Escalona, F. Sillars, T. Marrocco, R Edgar, S. Mridha, T.N. Baker

Research output: Contribution to journalArticle

Abstract

Surface metal matrix composites have been developed to enhance properties such as erosion, wear and corrosion of alloys. In this study, ~5 µm or ~75 µm SiC particulates were preplaced on a microalloyed steel. Single track surface zones were melted by a tungsten inert gas torch, and the effect of two heat inputs, 420Jmm-1 and 840 Jmm-1,compared. The results showed that the samples melted using 420Jmm-1 were crack-free. Pin-on-disk wear testing under dry sliding conditions were conducted. The effects of load and sliding velocity were used to characterise the performance of the crack-free samples. Microstructural and X-ray diffraction studies of the surface showed that the SiC had dissolved, and that martensite, was the main phase influencing the hardness.
LanguageEnglish
JournalMaterials Science and Technology (United Kingdom)
Publication statusAccepted/In press - 30 Sep 2019

Fingerprint

Steel
Silicon carbide
silicon carbides
particulates
steels
microstructure
Microstructure
sliding
cracks
Wear of materials
Cracks
Noble Gases
torches
Tungsten
metal matrix composites
Inert gases
martensite
Martensite
erosion
rare gases

Keywords

  • surface engineering
  • microalloyed steel
  • silicon carbide particulates
  • particle size
  • TIG melting
  • wear rate
  • microhardness

Cite this

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title = "Silicon carbide particulates incorporated into microalloyed steel surface using TIG: microstructure and properties",
abstract = "Surface metal matrix composites have been developed to enhance properties such as erosion, wear and corrosion of alloys. In this study, ~5 µm or ~75 µm SiC particulates were preplaced on a microalloyed steel. Single track surface zones were melted by a tungsten inert gas torch, and the effect of two heat inputs, 420Jmm-1 and 840 Jmm-1,compared. The results showed that the samples melted using 420Jmm-1 were crack-free. Pin-on-disk wear testing under dry sliding conditions were conducted. The effects of load and sliding velocity were used to characterise the performance of the crack-free samples. Microstructural and X-ray diffraction studies of the surface showed that the SiC had dissolved, and that martensite, was the main phase influencing the hardness.",
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T2 - Materials Science and Technology

AU - Munoz-Escalona, P.

AU - Sillars, F.

AU - Marrocco, T.

AU - Edgar, R

AU - Mridha, S.

AU - Baker, T.N.

PY - 2019/9/30

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AB - Surface metal matrix composites have been developed to enhance properties such as erosion, wear and corrosion of alloys. In this study, ~5 µm or ~75 µm SiC particulates were preplaced on a microalloyed steel. Single track surface zones were melted by a tungsten inert gas torch, and the effect of two heat inputs, 420Jmm-1 and 840 Jmm-1,compared. The results showed that the samples melted using 420Jmm-1 were crack-free. Pin-on-disk wear testing under dry sliding conditions were conducted. The effects of load and sliding velocity were used to characterise the performance of the crack-free samples. Microstructural and X-ray diffraction studies of the surface showed that the SiC had dissolved, and that martensite, was the main phase influencing the hardness.

KW - surface engineering

KW - microalloyed steel

KW - silicon carbide particulates

KW - particle size

KW - TIG melting

KW - wear rate

KW - microhardness

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