Austempered ductile iron: a competitive alternative for forged induction-hardened steel crankshafts

Bahmani, Mahmoud; Elliott, R.; Varahram, N.

doi:10.1080/13640461.1997.11819666

Cited by 28 publications

(6 citation statements)

References 7 publications

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“…However, similar to manganese, this element adversely affects the mechanical properties of ADI if used in excess. Molybdenum segregates to the intercellular regions to form carbides if excess amount of it used in the ADI [27]. Klocke et al [28] reported that use of more than 0.3 wt % Mo, adversely affect the tool life and there is a risk of breakout of the cutting edge as the crater wear increases.…”

Section: Molybdenummentioning

confidence: 99%

Machinability and related properties of austempered ductile iron: A review

Hegde

Sharma

2018

JMES

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When the ductile iron which is also known as Spheroidal Graphite (SG) iron, is subjected to austempering heat treatment, the material is known as austempered ductile iron (ADI). This material has good mechanical properties and has various applications in different fields. This revolutionary material with its excellent combination of strength, ductility, toughness and wear resistance has the potential to replace some of the commonly used conventional materials such as steel, aluminium and other light weight alloys as it offers production advantage as well. One of the problems encountered during manufacturing is machining of ADI parts owing to its high hardness and wear resistance. Many researchers over a period of time have reported the machinability aspects of the ADI. This paper presents a review on the developments made on the machinability aspects of ADI along with other mechanical properties.

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Section: Molybdenummentioning

confidence: 99%

Machinability and related properties of austempered ductile iron: A review

Hegde

Sharma

2018

JMES

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“…In the same years, Ford Company manufactured rear axle bevel gears using ADI as a replacement for forged steel [2]. In 1987, Ford Motor Company replaced forged steel crankshafts with ADI ones for diesel engines [3]. The mechanical properties of ADI have been investigated in several studies [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of machinability of alloy ductile iron in term of thrust drilling force

Tanabi¹

2020

acperpro

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The main aim of this work is the assessment of the machinability of alloyed ductile iron before the austempering process. 16MnCr5 alloy steel and alloyed ductile specimens were subjected to drilling tests. The effect of drilling parameters on cutting force was investigated based on the Taguchi approach. Based on the results, a regression model was established to predict thrust force at various drilling conditions. The predicted thrust forces ratio was then used to evaluate the machinability of alloyed ductile respect to the 16MnCr5 alloy steel. The results showed that at lower feed rate, the normal drilling force is very close for both materials, such that the estimated machinability rating is 86%.

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“…The excellent castability and good mechanical properties along with lower cost of ADI has attracted its use as castings in automotive, rail, structural and heavy engineering applications. [8][9][10] However, due to the desired and completed shape of the castings sometimes it is required to be fabricated and joining between the castings parts. Also many a times DI casting is required to be repaired, which demands welding consumables compatible with DI.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Study for Optimization of Ce Content of Austempered Ductile Iron (ADI) Weld Metal

Sarkar

Pal

2019

ISIJ Int.

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Bead-on-plate welding was performed on 20 mm thick cast ductile iron plate in shielded metal arc welding using three different levels (0.05, 0.1, 0.2%) of Ce and one without Ce containing developed coated electrodes after establishing weld procedure as per AWS (D11). As-welded DI weldments were given isothermal heat treatment at two different austempering temperatures (300°C and 350°C) for 1.5 h, 2 h and 2.5 h holding time. Microstructures of as-deposited and austempered weld metals were characterized by OM, SEM, TEM, XRD analysis and microhardness testing. Results show that weld metal containing 0.1% Ce attributed lowest amount of ledeburitic carbide in as-deposited condition and maximum vol.% of retained austenite (46.7%) after austempering heat treatment compare to other two levels of Ce. Since maximum amount of retained austenite is the desirable microstructure after austempering heat treatment, 0.1% Ce is considered as the optimum one in DI weld metal.

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Austempered ductile iron: a competitive alternative for forged induction-hardened steel crankshafts

Cited by 28 publications

References 7 publications

Machinability and related properties of austempered ductile iron: A review

Machinability and related properties of austempered ductile iron: A review

Evaluation of machinability of alloy ductile iron in term of thrust drilling force

Microstructural Study for Optimization of Ce Content of Austempered Ductile Iron (ADI) Weld Metal

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