STRUKTURMIKRO, KEKERASAN, DAN KETAHANAN KOROSI BAJA TAHAN KARAT MARTENSITIK 13Cr3Mo3Ni HASIL QUENCH-TEMPER DENGAN VARIASI TEMPERATUR DAN WAKTU AUSTENISASI

Prifiharni, Siska; Ahmad, Denni; Juniarsih, Andinnie; Mabruri, Efendi

doi:10.14203/metalurgi.v27i2.348

Cited by 3 publications

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“…Pengujian struktur mikro dengan menggunakan Optical microscopy pada setiap material, dengan perbesaran 200 X dan perbesaran 400 X . (Prifiharni et al, 2017). Pada suhu hardening 1025 o C nilai kekerasannya meningkat menjadi 50 HRC, ini disebabkan karena adanya perlakuan panas diatas suhu austenitisasi disertai pendinginan dengan cepat, maka didalam proses itulah terjadi transformasi fasa ferit dan pearlit ke fasa martensit (Isfahany, Saghafian and Borhani, 2011).…”

Section: Hasil Dan Pembahasanunclassified

Analisis Pengaruh Variasi Tempering Terhadap Kekerasan dan Metalografi pada Stainless Steel Sebagai Material Alat Kesehatan

Kholis¹,

Purwanto²

2022

SNST

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Dalam Penelitian ini bertujuan mengetahui pengaruh variasi suhu tempering terhadap struktur mikro dan kekerasan pada stainless stell DIN 4021 sebagai material produk alat kesehatan. Pada material baja stainless steel dilakukan proses heat treatment terlebih dahulu dengan suhu 1025 o C dengan waktu penahanan 25 menit dan dilakukan quenching. Material baja stainlees stell setelah dilakukan Heat treatment, dilakukan tahap selanjutnya yaitu tempering dengan variasi suhu 200 o C, 400 o C dan 600 o C. Hasil penelitian menunjukkan bahwa proses heat treatment bisa meningkatkan nilai kekerasan material. Nilai kekerasan raw material adalah 22 HRC, setelah dilakukan heat treatment meningkat menjadi 50 HRC. Parameter tempering nilai kekerasan tertinggi adalah 47 HRC pada variasi tempering suhu 200 o C, dan parameter tempering dengan nilai terendah adalah 43 HRC pada variasi suhu 600 o C. Hasil pengujian struktur mikro menggunakan Optical Microscopy menunjukan bahwa menghasilkan struktur ferit, pearlit, dan martensit. semakin tinggi suhu tempering, maka semakin besar luas area dan dimensi partikelnya.

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Section: Hasil Dan Pembahasanunclassified

Analisis Pengaruh Variasi Tempering Terhadap Kekerasan dan Metalografi pada Stainless Steel Sebagai Material Alat Kesehatan

Kholis¹,

Purwanto²

2022

SNST

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“…The corrosion resistance of steel is influenced by the alloying elements contained in it [3]. The mechanical properties and corrosion resistance of steel depend on the chemical composition and the microstructure contained in it [4], such as nickel (Ni), chromium (Cr), and manganese (Mn). These three elements will impact the corrosion resistance properties [3].…”

Section: Introductionmentioning

confidence: 99%

ANALYSIS OF CORROSION RATE AND HARDNESS VALUE OF LOW CARBON STEEL COATED WITH PAni-TiO2 SYNTHESIZED BY ELECTRODEPOSITION

Sulistyaningsih

Lestari

Yusuf

et al. 2023

IPR

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In the industrial world, carbon steel has been widely used. Corrosion of carbon steel cannot be avoided, so many studies have been carried out to overcome Corrosion. One of the efforts to overcome Corrosion is by coating. Low-carbon steel coating was done by combining TiO2 and polyaniline (PAni), which was carried out by electrodeposition. A carbon steel specimen that has been coated is corroded by immersing it in an acid and salt medium. After Corrosion, the specimen is tested for hardness. The specimen without inhibitor has a hardness value of 131 kg/mm2, while the specimen with the highest hardness value is a specimen coated with PAni 10-1 M and TiO2 10-4 M at 336 kg/mm2. Based on visual observation, the Corrosion that occurs is uniform.

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“…Various cooling processes will have different cooling rates depending on the type of cooling medium. [7] The cooling media commonly used are: air, water, oil or other cooling media. [8] In addition to the cooling medium, different cooling methods will also produce different levels of hardness.…”

Section: Introductionmentioning

confidence: 99%

Effect of Forging Deformation and Cooling on Mechanical Properties of Martensitic Stainless Steel

Subagiyo

Hadi

Sarjiyana

et al. 2021

LOGIC

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Stainless steel has good mechanical properties compared to other materials for strength and hardness, usually it will increase in hardness after hardening or forging. The purpose of this study was to obtain information about: The value of hardness and tensile strength of martensitic stainless steel forging with various deformations and cooling. The research method used is an experimental method, namely by forging on martensitic stainless steel with variations in deformation and cooling rate. Variations of forging deformation used are 25%, 50%, and 75%. The cooling media used are water, oil and air. The results of forgings with various cooling media were tested for tensile strength and tested for hardness using the Rockwell C (HRC) method. It was found that the higher the value of forging deformation, the higher the value of strength and hardness of martensitic stainless steel. This is because more and more martensite structures are recrystallized. In addition, it was also found that water and air cooling media gave an increase in the hardness of martensitic stainless steels. This is influenced by the cooling rate, where the higher the cooling rate, the more martensite structures formed, thus increasing the hardness value. The increase in hardness value is proportional to the increase in yield strength and tensile strength.

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STRUKTURMIKRO, KEKERASAN, DAN KETAHANAN KOROSI BAJA TAHAN KARAT MARTENSITIK 13Cr3Mo3Ni HASIL QUENCH-TEMPER DENGAN VARIASI TEMPERATUR DAN WAKTU AUSTENISASI

Cited by 3 publications

References 0 publications

Analisis Pengaruh Variasi Tempering Terhadap Kekerasan dan Metalografi pada Stainless Steel Sebagai Material Alat Kesehatan

Analisis Pengaruh Variasi Tempering Terhadap Kekerasan dan Metalografi pada Stainless Steel Sebagai Material Alat Kesehatan

ANALYSIS OF CORROSION RATE AND HARDNESS VALUE OF LOW CARBON STEEL COATED WITH PAni-TiO2 SYNTHESIZED BY ELECTRODEPOSITION

Effect of Forging Deformation and Cooling on Mechanical Properties of Martensitic Stainless Steel

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