Effect of Heat Treatment on Mechanical Properties and Microstructure of NST 37-2 Steel

Fadare, D. A.; Fadara, Taiwo Gbolarumi; Akanbi, O. Y.

doi:10.4236/jmmce.2011.103020

Cited by 67 publications

(55 citation statements)

References 2 publications

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“…The metallographic structure of annealing heat treatment is shown in (Figure 3a). As it can be seen the cementite grains that is very hard and brittle which is easy to fracture [11]. The deformed structure was fully homogenized and the final microstructure consisted of fine ferrite grains in which the pearlite was more uniformly distributed.…”

Section: Microstructural Analysismentioning

confidence: 84%

Research on the Precision Straightening Stroke of SAE 52100 Steel in Different Heat Treatments

Khaing¹,

Lü²

2014

AJME

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This research is aimed to analyze the microstructure and hardness properties of SAE 52100 steel straightening strokes based on experimental and theoretical investigation with different cross sectional shapes based on different heat treatment conditions. The heat treated samples are used for the design and manufacturing of straightening process. Through various experiments and simulations for the guide rail, we got the relationship between the loading stroke with different heat treatment and the loading stroke with cross section shape, and also the result of hardness testing curves and straightening stroke were discussed briefly. The quality and precision of straightness steel bar mainly depends on the results of hardness of heat treatment and microstructure of metal bar. Results put forward to the best method of selecting heat treatment methods and providing the theoretical basis for improving straightening precision and developing the optimal straightening process.

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Section: Microstructural Analysismentioning

confidence: 84%

Research on the Precision Straightening Stroke of SAE 52100 Steel in Different Heat Treatments

Khaing¹,

Lü²

2014

AJME

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“…Carbon steel is a type of steel where the main interstitial alloying constituent is Carbon in the range of 0.12 to 2.0% (Çalik, 2009;Sharma et al, 2012;Fadare, 2011). The American Iron and Steel Institute (AISI) defines Carbon steel as a steel in which no minimum content is specified or required for Chromium, Cobalt, Molybdenum, Nickel, Niobium, Titanium, Tungsten, Vanadium, Zirconium, or any other element added to obtain a desired alloying effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of immersion speed on the mechanical properties and micro-structure of oil quenched AISI 1020 steel

Mudasiru¹,

Babatunde²,

A³

et al. 2014

J. Eng. Technol. Res.

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Steel is one of the most important commodities in the engineering world due to its usefulness and availability. Its application is wider than any other metal, ranging from domestic use in the forms of utensils and many more to its use in construction and manufacturing industries. The wide range of application of steel in engineering practices has prompted the desire to increase certain mechanical properties to meet engineering requirements through heat treatment. In this work, samples of the specimen were purchased at a local market and the spectrometry analysis was carried out. The steel samples were machined into required shape, heat-treated and cooled under different immersion speeds. The effects of immersion speeds on the mechanical properties (hardness, % elongation, tensile strength, modulus of elasticity and yield strength) and microstructure of the quenched AISI 1020 were investigated. The result obtained revealed an improvement in the mechanical properties of the materials at different immersion speed.

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“…Quenching prevents the formation of ferrite or pearlite and allows the formation of bainite or martensite [3].…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment of Selected Nigerian Vegetable Oils as Quenching Media in Hardening Process for Medium Carbon Steel

Agboola¹,

Kamardeen²,

Mudiare³

et al. 2015

JMMCE

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A comparative study was carried out to investigate the suitability of some selected Nigerian vegetable oils as alternative quenchant to SAE40 engine oil for industrial heat treatment of Medium Carbon steels. The study involved the characterization of physicochemical properties and fatty acid profile of cotton seed oil, palm kernel oil, neem seed oil and palm oil. The quenching performance of these vegetable oils was conducted at quenchant bath temperatures of 34˚C, 50˚C, 70˚C, and 100˚C. SAE40 engine oil (Standard quenchant) and tap water served as control. The effect of cooling rates of the quenching media on mechanical properties and microstructure of the quenched steel samples were investigated. The results obtained show that the different vegetable oils have different viscosity and viscosity-temperature behavior just as their molecular structures were different. The mechanical properties of the as-quenched specimens in these oils show that the hardness of steel quenched in palm kernel oil was highest 40.85HRC. As received sample absorbed the highest amount of energy (183 J) before fracture while sample quenched in water absorbs least energy (28 J). Hence vegetable oil is suitable as alternative quenchant to petroleum based SAE40 engine oil for quenching medium carbon steels, without cracking or distortion, the most suitable among them being palm kernel oil.

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Effect of Heat Treatment on Mechanical Properties and Microstructure of NST 37-2 Steel

Cited by 67 publications

References 2 publications

Research on the Precision Straightening Stroke of SAE 52100 Steel in Different Heat Treatments

Research on the Precision Straightening Stroke of SAE 52100 Steel in Different Heat Treatments

Effect of immersion speed on the mechanical properties and micro-structure of oil quenched AISI 1020 steel

Performance Assessment of Selected Nigerian Vegetable Oils as Quenching Media in Hardening Process for Medium Carbon Steel

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