Firsadin, Anugrah (2018) Pengaruh Variasi Tegangan dan Siklus Perendaman terhadap Kerentanan Korosi Retaktegang pada AISI 304 di Lingkungan Simulated Ocean. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baja tahan karat austenitik banyak dipakai pada konstruksi
di lingkungan yang korosif, seperti pada lingkungan laut. Oleh karena itu, penelitian ini dilakukan untuk menganalisa stress corrosion cracking (SCC) yang terjadi pada lingkungan air laut dengan menggunakan material baja tahan karat tipe AISI 304 dan menggunakan larutan elektrolit NaCl 3,5% dengan memberikan variasi pembebanan dan variasi siklus perendaman. Pengujian korosi retak tegang pada penelitian ini menggunakan metode UBend dengan periode pengujian selama 14 hari. Pengujian dilakukan dengan kondisi elektrolit pada temperatur 50oC. Untuk menganalisa perilaku korosi dan kerentanan korosi retak tegang pada baja tahan karat AISI 304,dilakukan serangkaian pengujian
uji spectrometer, uji tarik, uji penetran , uji makro visual, uji metalografi,uji SEM/EDX dan uji microhardness. Pada hasil pengujian terlihat adanya pitting pada semua spesimen dan retak terjadi pada pembebanan 0.8 σy. Dari pengujian dan analisa yang telah dilakukan dapat disimpulkan bahwa pada lingkungan air laut, baja AISI 304 mengalami pitting.Pitting bertambah pada siklus
perendaman siklik. Variasi tegangan juga mempengaruhi jumlah
pitting dan mengakitbatkan korosi retak tegang
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Austenitic stainless steels are widely used in construction
in corrosive environments, such as the marine environment. Therefore, this study was conducted to analyze the stress corrosion cracking (SCC) occurring in the marine environment using AISI 304 stainless steel material and using a 3.5% NaCl electrolyte solution by varying the
stress and variation of the immersion cycle. Corrosion test in this research using U-Bend method and tested for 14 days. The test was carried out under electrolyte conditions at a
temperature of 50 ° C. To analyze the corrosion behavior and susceptibility stress of cracked corrosion on AISI 304 stainless steel, a series of test were tested, spectrometer test, tensile test, penetrant test,
macro visual test, metallographic test, SEM / EDX
test and microhardness test. In the test results showed the pitting occurred on all specimens and cracks occurred at the loading of 0.8 σy. And it can be concluded that in the seawater environment, AISI 304 steel undergoes pitting.Pitting increases in the cyclic immersion cycle. Stress variations also affect the number of pitting
and stress corrosion cracking.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.112 23 Fir p-1 3100018074253 |
| Uncontrolled Keywords: | SS304; korosi retak tegang; natrium klorida metode perendaman; variasi pembebanan |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | firsadin anugrah |
| Date Deposited: | 12 Feb 2018 05:39 |
| Last Modified: | 28 Apr 2020 04:21 |
| URI: | http://repository.its.ac.id/id/eprint/49262 |
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