Tatapangarsa, Iftitah (2016) Pengaruh Waktu Tahan Post-Heat Dan Cooling Rate Terhadap Struktur Mikro Dan Perilaku Ketahanan Korosi Baja Aisi 1006 Pada Proses Copperizing. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tembaga merupakan salah satu unsur paduan yang ditambahkan
pada low carbon steel pambahan tembaga dilakukan untuk
meningkatkan ketahanan terhadap Atmosperic corrosion dengan
membentuk lapisan oksida Cu2O dan Cu(OH)2, dalam penelitian
ini dilakukan pemaduan tembaga dan baja AISI 1006 dengan
mencelupkan baja AISI 1006 yang sebelumnya telah di pre-heat
pada temparatur 900° C kedalam tembaga cair dengan waktu
tahan variasi tahan 5, 10,15 dan 20 menit untuk memberikan
waktu difusi, dilanjutkan dengan post-heat pada temperatur
1100°C di variasikan pendinginannya yaitu dengan metode
Normalizing, Quenching pada media air dan Annealing.
Kemudian dilakukan pengujian komposisi kimia dengan EOS,
pengujian strukur mikro/makro, pengujian fasa dengan XRD dan
pengujian laju korosi dengan pengujian Polarization Tafel.
Didapat muncul nya struktur acicular ferrite, Widmanstatten
Ferrite,dan Granular Ferrite pada pendinginan Quenching,
muncul Widmanstatten Ferrite dan Polygonal Ferrite pada
pendinginan Normalizing, dan muncul Polygonal Ferrite pada
pendinginan Annealing. Dimana Proses copperizing menurunkan
diameter butir dan post-heat menambah diameter butir.Terjadi
penurunan nilai Corrosion rate untuk baja AISI 1006,
penambahan waktu post-heat semakin menurunkan nilai
corrosion rate, dengan nilai corrosion rate rendah 6.489 mpy
pada Baja AISI 1006 copperizing dengan post-heat 20 menit
pendinginan quenching.
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Copper is one of the alloying elements that are added to the low
carbon steel pambahan copper to improve the reliability of the
atmosperic corrosion by forming a layer of oxide Cu2O and Cu
(OH) 2, in this study the integration of copper and steel AISI 1006
by dipping the steel AISI 1006 previously has been in pre-heat at
the temperature of 900 ° C into the molten copper holding time
variation resistant 5, 10,15 and 20 minutes to give the diffusion
time, followed by post-heat at a temperature of 1100 ° C in
varying cooling is by the method Normalizing, Quenching in
water and Annealing. Then testing the chemical composition with
EOS, the test structure of micro / macro, testing and testing
phases by XRD corrosion rate with Tafel Polarization testing.
Her structure appears obtained acicular ferrite, Widmanstatten
Ferrite and Granular Ferrite on cooling Quenching, appeared
Widmanstatten Polygonal Ferrite and Ferrite on cooling
Normalizing, and appeared Polygonal Ferrite on cooling
Annealing. Where copperizing process lowers grain diameter and
post-heat add grain Diameter impairment Corrosion rate on steel
AISI 1006, the addition of post-heat time is increasingly reducing
the corrosion rate, the lower value of corrosion rate 6.489 mpy
on AISI 1006 Steel copperizing with post- 20 minutes quenching.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 660.284 4 Tat p |
| Uncontrolled Keywords: | copperizing, AISI 1006, Corrosion, Copper, diffusion, microstructure, Atmospheric Corrosion, HSLA, Weathering steel, Hardening, Accicular Ferrite |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 25 Oct 2019 09:43 |
| Last Modified: | 25 Oct 2019 09:43 |
| URI: | http://repository.its.ac.id/id/eprint/71426 |
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