PENGARUH VARIASI WAKTU AGING TERHADAP SIFAT MEKANIS PADUAN ALUMINIUM COR A356 SEBAGAI BAHAN PROPELER KAPAL

Authors

  • Suyanto Suyanto
  • Sri Pramono
  • Riyanto Wibowo

DOI:

https://doi.org/10.36499/jim.v14i2.2509

Abstract

Salah satu cara untuk meningkatkan sifat mekanis bahan aluminium paduan adalah dengan perlakuan panas T6. Perlakuan panas yang dilakukan meliputi langkah: 1) solutioning yaitu menahan material pada suhu 540 oC selama 1 jam, 2) quenching yaitu melakukan pendinginan cepat dengan mencelupkan material ke dalam air pada suhu kamar, dan 3) aging yaitu menahan material pada suhu aging 180 oC selama 1, 2, 3, dan 4 jam. Hasil dari uji tarik dan kekerasan menunjukkan bahwa nilai kekuatan tarik dan kekerasan tertinggi dicapai pada waktu aging 3 jam, dengan nilai berturut-turut 181,8 MPa dan 97,7 HRB. Waktu aging melebihi 4 jam akan berpengaruh pada penurunan kekuatan tarik dan kekerasan material.

Kata kunci: aluminium, kekerasan, kekuatan, T6

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Published

2018-11-29

Issue

Vol. 14 No. 2 (2018)

Section

Articles

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