Syafiudin, Imam (2016) Pengaruh Kadar Mangan (Mn) Terhadap Struktur Mikro Dan Kekerasan Baja Paduan Fe-17cr-Xmn Melalui Metode Peleburan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baja paduan austenitik Fe-17Cr-xMn dikembangkan dengan melihat pengaruh Mn terhadap struktur mikro dan kekerasan baja austenitik dengan komposisi Fe-17~18Cr-3~5Ni-4~11Mn. Paduan dengan 10.2%Mn menjadi komposisi minimal agar paduan Fe-17Cr-xMn bisa membentuk fasa austenit seluruhnya. Kekerasan maksimum dicapai pada komposisi mangan (Mn) 10.7 %wt dan kekerasan ini lebih besar daripada SS304 dan SS201. Pada temperatur kamar, Paduan Fe-17Cr-10Mn dan Fe-17Cr-12Mn masih terdapat fasa ferit karena komposisi mangan (Mn) sebagai unsur penstabil austenit pada paduan tersebut belum cukup untuk membentuk austenit seluruhnya. Sedangkan, paduan Fe-17Cr-14Mn dan Fe-17Cr-16Mn telah menjadi baja paduan austenitik, namun terdapat fasa senyawa karbida krom.Dengan peningkatan komposisi mangan (Mn), menurunkan jumlah fasa ferit dan meningkatkan jumlah fasa austenit. Namun pada komposisi Cr dan C yang tinggi, meningkatkan kecenderungan terbentuk senyawa karbida krom. Peningkatan komposisi mangan (Mn) meningkatkan nilai kekerasan paduan Fe-17Cr-xMn
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Austenitic steel alloy Fe-17Cr-xMn developed by examining the effect of Mn on the microstructure and hardness of austenitic steel containing Fe-17~18Cr- 3 ~5Ni-4~11Mn. Alloy with 10.2% Mn is found to be a minimal Mn content so that the Fe-17Cr-xMn alloy can form full austenite phase. The maximum hardness is achieved on the composition of manganese (Mn) 10.7% Mn and this value is higher than the SS304 and SS201. At room temperature, Fe-17Cr Alloy-10 Mn and Fe-17Cr-12Mn still contain ferrite phase due to the composition of manganese (Mn) as an austenite stabilizing element in the alloy is not enough to form a fully austenitic. While the alloy Fe-17Cr-14Mn and Fe-17Cr-16Mn success become austenitic alloy steel, but there is a chromium carbide. With the increase of the manganese (Mn) content, ferrite phase decreased and the austenite phase increased, but at high content of Cr and C, the tendency to form chromium carbide increased. With the increase of manganese (Mn) content increases the hardness value of Fe-17Cr-xMn alloy.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.186 Sya p |
| Uncontrolled Keywords: | Baja Paduan Austenitik, Mangan, Struktur mikro, Kekerasan, |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 07 Sep 2017 07:13 |
| Last Modified: | 07 Sep 2017 07:13 |
| URI: | http://repository.its.ac.id/id/eprint/48808 |
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