Evaluation of Mechanical Properties of Medium Carbon Steel Quenched in Water and Oil

Odusote, Jamiu Kolawole; Ajiboye, T. K.; Rabiu, A. B.

doi:10.4236/jmmce.2012.119079

Cited by 44 publications

(37 citation statements)

References 7 publications

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“…Substrat yang berbeda memiliki karakteristik yang berbeda pula dimana baja karbon rendah dengan komposisi karbon kurang dari 0,3% memiliki kekerasan dan kekuatan yang tinggi dibandingkan dengan baja tanpa kandungan karbon [7][8] . Nikel krom adalah perpaduan antara nikel dan krom yang memiliki ketahanan yang sangat baik terhadap oksidasi dan korosi suhu tinggi serta ketahanan aus yang baik [9] , sedangkan hastealloy C-276 adalah paduan nikel-molibdenum-kromium yang dirancang untuk memiliki ketahanan korosi yang sangat baik untuk diterapkan di lingkungan yang ekstrim [10][11] .…”

Section: Pendahuluanunclassified

Pengaruh Substrat Terhadap Kekerasan Lapisan NiCoCrAlY Yang Terdeposisi Dengan Teknik HVOF[Effect of Different Substrate on Hardness Properties of NiCoCrAlY Coatings Deposited by HVOF Technique]

Desiati¹,

Sugiarti²,

Junianto³

et al. 2017

metal.

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IntisariTelah dilakukan karakterisasi strukturmikro dan kekerasan mikro pada lapisan NiCoCrAlY yang dideposisikan di atas substrat yang berbeda yaitu baja karbon, nikel krom dan hastealloy. Lapisan NiCoCrAlY dideposisikan menggunakan teknik penyemprotan HVOF (high velocity oxy fuel). Proses karakterisasi dan pengukuran dilakukan pada seluruh lapisan dengan irisan melintang. Karakterisasi strukturmikro diamati dengan menggunakan mikroskop optik dengan perbesaran 40x. Selanjutnya untuk pengukuran kekerasan menggunakan kekerasan mikro dengan beban 300 gf selama 13 detik. Data pengujian kekerasan diperoleh dengan mengukur nilai rata-rata dari 3 posisi uji kekerasan pada masing-masing bagian substrat sebelum dilapisi, setelah dilapisi dan lapisan NiCoCrAlY. Berdasarkan hasil karakterisasi strukturmikro diketahui bahwa lapisan NiCoCrAlY berhasil terdeposisi dengan ketebalan 370,76 µm, 92 µm, dan 115,73 µm masing-masing di atas substrat baja karbon, nikel krom dan hastealloy. Morfologi permukaan lapisan menunjukkan bahwa lapisan yang terdeposisi tidak begitu rata dan masih tampak adanya pori atau lubang di area lapisan NiCoCrAlY yang terbentuk. Porositas dari lapisan sangat berpengaruh pada sifat mekanik, semakin tinggi persentase porositas lapisan maka kekerasan akan menurun. Nilai kekerasan lapisan NiCoCrAlY pada substrat baja karbon adalah sebesar 349,95 HV, nikel krom sebesar 315,60 HV dan hastealloy sebesar 311,30 HV. Jarak dengan interface mempengaruhi pengukuran kekerasan. Semakin dekat dengan interface akan semakin menurun nilai kekerasaannya. Hal ini dipengaruhi oleh daerah interdifusi elemen pelapis sehingga mempengaruhi kekuatan mekaniknya.

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Section: Pendahuluanunclassified

Pengaruh Substrat Terhadap Kekerasan Lapisan NiCoCrAlY Yang Terdeposisi Dengan Teknik HVOF[Effect of Different Substrate on Hardness Properties of NiCoCrAlY Coatings Deposited by HVOF Technique]

Desiati¹,

Sugiarti²,

Junianto³

et al. 2017

metal.

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“…However, at 300 °C palm oil cools the heated aluminum faster as more heat was extracted, while at 350 °C shea butter oil cooled the heated aluminum faster compared with the other oils. Vegetable oils have been reported to have good lubricity, wetting ability and cooling behavior [9]. The cooling behavior of edible and non-edible vegetable oils has been found to be strongly dependent on the viscosity of the quench oils [8].…”

Section: Cooling Ratementioning

confidence: 99%

“…In recent studies, the suitability of some locally available biodegradable oils as quenching media during heat treatment of plain carbon steel [8][9][10] and as cutting lubricants during machining operations [9,11] has been reported. The present study was undertaken with the objective of replacing mineral oils with local biodegradable oils, which are more readily available, relatively cheaper and more environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vegetable Oil Quenchants on the Properties of Aluminum During Solution Heat Treatment

Odusote¹,

Adekunle²,

Rabiu³

2015

J. Mech. Eng. Sci.

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Proper selection of appropriate quenching media can result in improved mechanical properties of pure commercial aluminum after solution heat treatment. This paper presents the effect of heat extraction by groundnut, melon, palm kernel, shea butter and palm oils on the mechanical properties of various samples of pure commercial aluminum heat treated at 200 °C, 250 °C, 300 °C and 350° C. A muffle furnace equipped with a digital thermometer and a thermocouple was used for the solution heat treatment. Tensile strength and hardness tests were carried out using an Instron Universal Tester and Vickers hardness methods, respectively. The results showed that palm kernel oil cools faster at 200 °C and 250 °C, while palm oil and shea butter oil quench faster at 300 °C and 350 °C, respectively. Solution heat treatment with palm kernel oil offered the highest percentage elongation at 200 °C, while at 350 °C shea butter oil gave the best percentage elongation. The best among the bio-quenching oils in providing good ductility is shea butter oil at 200 °C, while at 300 °C and 350 °C groundnut oil gives the best result. Highest hardness values were obtained from samples quenched in melon oil between 200 °C and 300 °C. However, these values decreased with increased heating temperature, probably due to the density and viscosity variation with temperature rise. Similar observations were made on other samples quenched in other bio-quenchant oils used in this experiment. This study shows that locally available vegetable oils have promising potential to serve as a possible replacement for nonbiodegradable mineral oils in many applications.

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“…The properties of carbon steel depend on the carbon contained within their composition, ranging from low (0.05-0.2%), medium (0.30-0.60%) and high (0.7-2.5%) [1]. Carbon steel possesses several important characteristics, such as being difficult to weld, bend, machine and cut; depending on its properties.…”

Section: Introductionmentioning

confidence: 99%

Study on Surface Integrity of AISI 1045 Carbon Steel when machined by Carbide Cutting Tool under wet conditions

et al. 2017

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Abstract. This paper presents the evaluation of surface roughness and roughness profiles when machining carbon steel under wet conditions with low and high cutting speeds. The workpiece materials and cutting tools selected in this research were AISI 1045 carbon steel and canela carbide inserts graded PM25, respectively. The cutting tools undergo machining tests by CNC turning operations and their performances were evaluated by their surface roughness value and observation of the surface roughness profile. The machining tests were held at varied cutting speeds of 35 to 53 m/min, feed rate of 0.15 to 0.50 mm/rev and a constant depth of cut of 1 mm. From the analysis, it was found that surface roughness increased as the feed rate increased. Varian of surface roughness was suspected due to interaction between cutting speeds and feed rates as well as nose radius conditions; whether from tool wear or the formation of a built-up edge. This study helps us understand the effect of cutting speed and feed rate on surface integrity, when machining AISI 1045 carbon steel using carbide cutting tools, under wet cutting conditions.

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Evaluation of Mechanical Properties of Medium Carbon Steel Quenched in Water and Oil

Cited by 44 publications

References 7 publications

Pengaruh Substrat Terhadap Kekerasan Lapisan NiCoCrAlY Yang Terdeposisi Dengan Teknik HVOF[Effect of Different Substrate on Hardness Properties of NiCoCrAlY Coatings Deposited by HVOF Technique]

Pengaruh Substrat Terhadap Kekerasan Lapisan NiCoCrAlY Yang Terdeposisi Dengan Teknik HVOF[Effect of Different Substrate on Hardness Properties of NiCoCrAlY Coatings Deposited by HVOF Technique]

Effect of Vegetable Oil Quenchants on the Properties of Aluminum During Solution Heat Treatment

Study on Surface Integrity of AISI 1045 Carbon Steel when machined by Carbide Cutting Tool under wet conditions

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