Development of steel wire rope - Reinforced aluminium composite for armour material using the squeeze casting process

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Abstract

Steel wire rope - reinforced aluminium composite - has been developed to improve the ballistic properties and mobility of armour material. Critical to obtaining ballistic resistance is that the materials must be sufficiently hard and strong, especially at the surface where a projectile will first make impact. To obtain this resistance, aluminium alloys can be strengthened by adding Cu and Mg. This research studied the ballistic properties of aluminium composites with varied Cu and Mg content. The matrix used in this study was an Al-7Si master alloy with 0.08-1.03 wt. % Mg and 0.05-3.75 wt. % Cu, both independently and in combination. A high carbon steel wire rope was used as strengthening material. The samples were produced through the squeeze casting process with a pressure of 1 MPa at semi-solid melting temperatures of 590-610 °C. The slab was then rolled for 10 % reduction to increase the hardness. Ballistic testing was performed in accordance with ASTM F1233 by using a 9 mm calibre projectile and 90° direction. Micro structural observation was conducted in the as-cast and ballistic samples, performed with optical microscope and scanning electron microscope (SEM). The results showed that squeeze casting may improve interfacial wettability and reduce void. The increase in Mg resulted in the decline of interfacial voids, but Cu addition tended to increase them. The aluminium armour was able to withstand a 9 mm calibre projectile, although some cracks were visible. The wire rope was not effective in stopping the penetration of a 7.62 mm calibre projectile.

Original languageEnglish
Title of host publicationAdvanced Materials Research QiR 12
Pages27-35
Number of pages9
DOIs
Publication statusPublished - 21 Jul 2011
Event12th International Conference on Quality in Research, QiR 2011 - Bali, Indonesia
Duration: 4 Jul 20117 Jul 2011

Publication series

NameAdvanced Materials Research
Volume277
ISSN (Print)1022-6680

Conference

Conference12th International Conference on Quality in Research, QiR 2011
CountryIndonesia
CityBali
Period4/07/117/07/11

Keywords

  • Aluminium composite
  • Armour material
  • Ballistic
  • Squeeze casting
  • Steel wire rope

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