Dry sliding wear behavior of cast SiC-reinforced Al MMCs

Tiejun Ma, Hideki Yamaura, Donald A. Koss, Robert Carl Voigt

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

Dry sliding block-on-ring wear tests were performed on a squeeze cast A390 Al alloy, a high pressure die cast 20%SiC-Al MMC, and a newly developed as-cast 50%SiC-Al MMC. The testing conditions spanned the transition that control the mild to severe wear for all materials. The results show that the sliding wear resistance increases as SiC particle volume fraction increases. The critical transition temperature, at which wear rates transit from mild to severe, also increases with increasing SiC content. Examination of the wear surfaces, the subsurface characteristics, and the wear debris indicate that a hard 'mechanically alloyed' layer, high in SiC content, forms on the sliding surface of the 50%SiC composite. This layer prevents the surface adhesion wear mechanisms active in the A390 alloy, and it inhibits delamination wear mechanisms that control the mild wear of the 20%SiC composite. As a result, mild wear of the 50%SiC composite occurs by an oxidation process. In the 20%SiC material, severe wear occurs as a consequence of material removal by a flow-related extrusion-like process. In contrast, the high SiC content prevents plasticity in the 50%SiC composite, which eventually is susceptible to severe wear at very high temperatures (≈ 450 °C) due to a near-brittle cracking processes.

Original languageEnglish (US)
Pages (from-to)116-125
Number of pages10
JournalMaterials Science and Engineering A
Volume360
Issue number1-2
DOIs
StatePublished - Nov 15 2003

Fingerprint

sliding
casts
Wear of materials
composite materials
Composite materials
wear tests
transit
wear resistance
debris
plastic properties
machining
Delamination
Debris
critical temperature
Superconducting transition temperature
Wear resistance
Extrusion
Plasticity
adhesion
Volume fraction

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ma, Tiejun ; Yamaura, Hideki ; Koss, Donald A. ; Voigt, Robert Carl. / Dry sliding wear behavior of cast SiC-reinforced Al MMCs. In: Materials Science and Engineering A. 2003 ; Vol. 360, No. 1-2. pp. 116-125.
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abstract = "Dry sliding block-on-ring wear tests were performed on a squeeze cast A390 Al alloy, a high pressure die cast 20{\%}SiC-Al MMC, and a newly developed as-cast 50{\%}SiC-Al MMC. The testing conditions spanned the transition that control the mild to severe wear for all materials. The results show that the sliding wear resistance increases as SiC particle volume fraction increases. The critical transition temperature, at which wear rates transit from mild to severe, also increases with increasing SiC content. Examination of the wear surfaces, the subsurface characteristics, and the wear debris indicate that a hard 'mechanically alloyed' layer, high in SiC content, forms on the sliding surface of the 50{\%}SiC composite. This layer prevents the surface adhesion wear mechanisms active in the A390 alloy, and it inhibits delamination wear mechanisms that control the mild wear of the 20{\%}SiC composite. As a result, mild wear of the 50{\%}SiC composite occurs by an oxidation process. In the 20{\%}SiC material, severe wear occurs as a consequence of material removal by a flow-related extrusion-like process. In contrast, the high SiC content prevents plasticity in the 50{\%}SiC composite, which eventually is susceptible to severe wear at very high temperatures (≈ 450 °C) due to a near-brittle cracking processes.",
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Dry sliding wear behavior of cast SiC-reinforced Al MMCs. / Ma, Tiejun; Yamaura, Hideki; Koss, Donald A.; Voigt, Robert Carl.

In: Materials Science and Engineering A, Vol. 360, No. 1-2, 15.11.2003, p. 116-125.

Research output: Contribution to journalArticle

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