Influence of Heat Treatment on Microstructural and Mechanical Properties of Nodular Cast Iron

Sarath, K. Sai; Nambala, S.; Subramanyacharyulu, G.

doi:10.1007/s40033-014-0036-6

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…The production process involves a first austenizing as cast sample in the temperature range of 871-982 °C for sufficient time to get a fully austenite (γ) matrix and then quenching it to an intermediate temperature range of 260-400 °C. The casting is maintained at this temperature for 1-4 h [21]. The microstructure of ADI depends on austempering temperatures and times.…”

Section: Production Steps Of Adimentioning

confidence: 99%

Microstructural Analysis of Austempered Ductile Iron Castings

Çetin¹,

Meco

Davut

et al. 2016

Hittite J Sci Eng

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A ustempered ductile iron (ADI) is a specific type of spheroidal graphite cast iron (SGCI) grade which has attractive mechanical properties such as high tensile, fatigue strength, toughness and relatively good ductility. The grey cast iron, which is a widelyused engineering material, can have maximum 400 MPa ultimate tensile strength (UTS) values due to flake type of graphite. The flakes promote notcheffect and reduce ductility as well [1]. However if the graphite shape can be changed to a spheroidal or nodular form with some special casting techniques the UTS may reach to 800 MPa [2]. Further improvement of mechanical properties is possible by applying heat treatments, such as austempering, that change the matrix microstructure. The excellent mechanical properties of ADI, in particular the favorable combination of high tensile strength, wear resistance and ductility, predestine this material to act as a substitute for forged or case-hardened materials and Ductile Iron (DI) [2].

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Section: Production Steps Of Adimentioning

confidence: 99%

Microstructural Analysis of Austempered Ductile Iron Castings

Çetin¹,

Meco

Davut

et al. 2016

Hittite J Sci Eng

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“…Hervas I., Murcia S.C., and Kruthiventi S. et al [7][8][9][10][11][12][13][14][15] reported extensively on the industrial application of ductile iron due to its excellent casting performance, machinability, wear resistance, shock absorption, high flaw tolerance, good hardenability, high thermal conductivity, low thermal expansion coefficient, and low cost. Therefore, it is feasible to use ductile iron to produce rail vehicle wheels.…”

Section: Introductionmentioning

confidence: 99%

Wear Behavior of Ductile Iron Wheel Material Used for Rail-Transit Vehicles under Dry Sliding Conditions

et al. 2020

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A ductile iron wheel used for a rail-transit vehicle was treated with a recommended heat-treatment process. The ductile iron wheel after heat treatment was composed of graphite nodules and tempered sorbite with an area fraction of 98%. A friction test of the ductile iron and carbon steel wheel materials was systematically performed under different normal loads and sliding velocities. The results indicated that the wear mechanism of the ductile iron wheel changed from adhesion to abrasion with an increase in the normal load level. Adhesion was the main wear mechanism at different sliding velocities and normal load level. The impact of the normal load on the wear mechanism was greater than that of the sliding velocity. Since the ductile iron wheel material had excellent thermal property and higher carbon content, it exhibited a lower wear rate, a smaller difference value of the friction coefficient, and plastic deformation on the worn surface than those of the carbon steel wheel material. This indicates that ductile iron wheels may have a longer wear life, greater traction, and higher stability during operation than carbon steel wheels. The iron wheels have the potential for being applied in rail-transit vehicles.

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Influence of tempering conditions on the microstructure and mechanical properties of nodular cast iron

Singh

Agarwal

2022

Australian Journal of Mechanical Engineering

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Influence of Heat Treatment on Microstructural and Mechanical Properties of Nodular Cast Iron

Cited by 6 publications

References 3 publications

Microstructural Analysis of Austempered Ductile Iron Castings

Microstructural Analysis of Austempered Ductile Iron Castings

Wear Behavior of Ductile Iron Wheel Material Used for Rail-Transit Vehicles under Dry Sliding Conditions

Influence of tempering conditions on the microstructure and mechanical properties of nodular cast iron

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