Handoko, Bayu Dwi (2017) Analisis Pengaruh Heat Treatment Terhadap Laju Korosi dan Sifat Mekanis Material Pipa Baja API 5L Grade B Di Lingkungan Laut. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Telah dilakukan penelitian laju korosi material pipa baja API 5L grade B. Pada penelitian ini dilakukan pengujian laju korosi pada pipa baja API 5L grade B dengan variasi proses heat treatment. Variasi proses heat treatment yang dipilih adalah hardening, normalising, full anneling dan austempering. Sesudah diberikan perlakuan panas (heat treatment) material akan dilakukan uji korosi dengan perendaman (immersion corrosion test) pada air laut buatan (salinitas, 33 ‰,35 ‰, dan 37 ‰). Dari hasil penelitian ini didapatkan material tanpa perlakuan panas (non-heat treatment) memiliki nilai laju korosi paling tinggi dalam setiap konsentrasi yaitu 33 ‰, 35 ‰ dan 37 ‰ adalah 2.700 mpy, 2.740 mpy, dan 2.820 mpy. Sedangkan material dengan perlakuan panas fulll annealing memiliki nilai laju korosi paling rendah diantara perlakuan panas lainnya, nilai laju korosi disetiap konsentrasi yang diuji yaitu 33 ‰, 35 ‰ dan 37 ‰ adalah 2.031 mpy, 2.206 mpy, dan 2.340 mpy. Hasil foto mikrosruktur dan makrostruktur menunjukkan bawa setelah dilakukan foto mikrostruktur terjadi produk korosi jenis sumuran (pitting) dan seragam (uniform) sedangkan dari hasil foto makrostruktur dihasilkan endapan yang berwarna coklat kehitaman yang merupakan magnetik (Fe3O4) dan warna merah kecoklatan yang merupakan Fe(OH)3 dan FeOOH. Dari hasil penelitian ini didapatkan perlakuan panas jenis full annealing adalah jenis perlakuan yang paling baik dalam menghambat terjadinya laju korosi pada material pipa baja API 5L grade B di lingkungan laut.
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Corrosion rate research of steel pipe material
of API 5L grade B. In this
research, corrosion rate testing on API 5L grade B steel pipe with heat treatment
process variation. Variations of heat treatment process chosen are hardening,
normalizing, full anneling and austempering. After heat treatment the
material will
be subjected to immersion corrosion test on artificial seawater (salinity, 33 ‰, 35
‰, and 37 ‰). From the results of this study obtained the material without heat
treatment (non
-
heat treatment) has the highest rate of corrosion in each
conc
entration of 33 ‰, 35 ‰ and 37 ‰ is 2,700 mpy, 2,740 mpy, and 2,820 mpy.
While the material with heat treatment fulll Annealing has the lowest corrosion rate
value among other heat treatment, the value of corrosion rate in each tested
concentration of 33 ‰
, 35 ‰ and 37 ‰ is 2,031 mpy, 2,206 mpy, and 2,340 mpy.
Microsructure and macrostructure photographs showed that after microstructural
photographs there were pitting and uniform corrosion products while
macrostructure photographs produced a blackish brown
precipitate which was
magnetic (Fe3O4) and a
brownish red color that was Fe(OH )
3
and FeOOH. From
the results of this study obtained the heat treatment type of full annealing is the type
of treatment is best in inhibiting the occurrence of corrosion rate on API 5L steel
pipe material in the marine environment.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Heat Treatment, Immersion corrosion test, Pipa Baja API 5L grade B |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Bayu Dwi Handoko |
| Date Deposited: | 01 Feb 2018 04:05 |
| Last Modified: | 08 Mar 2019 04:05 |
| URI: | http://repository.its.ac.id/id/eprint/45583 |
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