Dry sliding wear behaviour of Al-12Si-4Mg alloy with cerium addition

A. S. Anasyida, A. R. Daud, Mariyam Jameelah Ghazali

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The purpose of this work is to understand the effect of cerium addition on wear resistance behaviour of as-cast alloys. Al-12Si-4 Mg alloys with 1-5 wt% cerium addition were prepared using the casting technique. A sliding wear test was carried out under applied loads of 10 N, 30 N and 50 N at a fixed sliding speed of 1 m/s using a pin-on-disc configuration. The wear test was conducted in dry conditions at room temperature of ∼25 °C. Detailed analysis of the microstructure, worn surface, collected debris and microhardness was undertaken in order to investigate the differences between the as-cast alloys with different levels of cerium addition. The addition of 1-5 wt% cerium was found to lead to the precipitation of intermetallic phases (Al-Ce), resulting a needle-like structures. Increasing cerium content up to 2 wt% improved both wear resistance and microhardness of as-cast alloys. Addition of more than 2 wt% cerium, however, led to a decrease in microhardness, resulting in lower wear resistance of the alloys. Moderate wear was observed at all loads, with specific wear rates (K′) ranging from 6.82 × 10-5 with 2 wt% Ce at applied load of 50 N to 21.48 × 10-5 mm3/N m without added Ce at an applied load of 10 N. Based on K′ ranges, the as-cast alloys exhibited moderate wear regimes, and the mechanism of wear is a combination of abrasion and adhesion. Alloy containing 2 wt% Ce, with the highest hardness and lowest K′ value, showed the greatest wear resistance.

Original languageEnglish
Pages (from-to)365-374
Number of pages10
JournalMaterials and Design
Volume31
Issue number1
DOIs
Publication statusPublished - Jan 2010

Fingerprint

Cerium
Wear of materials
Wear resistance
Microhardness
Abrasion
Debris
Needles
Intermetallics
Casting
Adhesion
Hardness
Microstructure

Keywords

  • Aluminium alloy
  • Casting
  • Cerium
  • Intermetallic
  • Microhardness
  • Wear resistance

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Dry sliding wear behaviour of Al-12Si-4Mg alloy with cerium addition. / Anasyida, A. S.; Daud, A. R.; Ghazali, Mariyam Jameelah.

In: Materials and Design, Vol. 31, No. 1, 01.2010, p. 365-374.

Research output: Contribution to journalArticle

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abstract = "The purpose of this work is to understand the effect of cerium addition on wear resistance behaviour of as-cast alloys. Al-12Si-4 Mg alloys with 1-5 wt{\%} cerium addition were prepared using the casting technique. A sliding wear test was carried out under applied loads of 10 N, 30 N and 50 N at a fixed sliding speed of 1 m/s using a pin-on-disc configuration. The wear test was conducted in dry conditions at room temperature of ∼25 °C. Detailed analysis of the microstructure, worn surface, collected debris and microhardness was undertaken in order to investigate the differences between the as-cast alloys with different levels of cerium addition. The addition of 1-5 wt{\%} cerium was found to lead to the precipitation of intermetallic phases (Al-Ce), resulting a needle-like structures. Increasing cerium content up to 2 wt{\%} improved both wear resistance and microhardness of as-cast alloys. Addition of more than 2 wt{\%} cerium, however, led to a decrease in microhardness, resulting in lower wear resistance of the alloys. Moderate wear was observed at all loads, with specific wear rates (K′) ranging from 6.82 × 10-5 with 2 wt{\%} Ce at applied load of 50 N to 21.48 × 10-5 mm3/N m without added Ce at an applied load of 10 N. Based on K′ ranges, the as-cast alloys exhibited moderate wear regimes, and the mechanism of wear is a combination of abrasion and adhesion. Alloy containing 2 wt{\%} Ce, with the highest hardness and lowest K′ value, showed the greatest wear resistance.",
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