Austempered Ductile Iron (ADI) Alternative Material for High-Performance Applications

Artola, Garikoitz; Gallastegi, I.; Izaga, J.; Barrena, M.I.; Rimmer, A. L.

doi:10.1007/s40962-016-0085-8

Cited by 24 publications

(9 citation statements)

References 5 publications

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“…The produced material is too sensitive to the notch effect and it is not possible to detect differences in the absorbed energy as usually found in cast iron grades as stated by Wallin [15]. This makes the use of K IC specimens recommendable to show relevant differences between two testing or material conditions, as it was shown with ADI grades by Artola et al [16]. Thus, more advanced experimental techniques, such as the ASTM E399 method, have been selected to characterize the toughness of the crankshafts.…”

Section: Tensile Testsmentioning

confidence: 98%

Tensile properties and fracture toughness at service temperatures of an optimized pearlitic ductile iron alloy for automotive crankshafts

Artola

Monzón

Lacaze

et al. 2022

Materials Science and Engineering: A

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Section: Tensile Testsmentioning

confidence: 98%

Tensile properties and fracture toughness at service temperatures of an optimized pearlitic ductile iron alloy for automotive crankshafts

Artola

Monzón

Lacaze

et al. 2022

Materials Science and Engineering: A

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“…The best tensile properties were obtained at certain austempering times called processing window in the ADI. 42,43,47,55,64,65,74,75 Short and long austempering times can cause deteriorated mechanical properties in the ADI. 47,60,64,65,71 .…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of Austempering Times on the Microstructures and Mechanical Properties of Dual-Matrix Structure Austempered Ductile Iron (DMS-ADI)

et al. 2021

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In this study, the effect of the austempering times on the microstructures and mechanical properties of dual-matrix structure austempered ductile iron (DMS-ADI) was investigated. With this aim, unalloyed as-cast ductile iron tensile samples were austenitized at 810 °C for 30 min to intercritical austenitizing followed by austempering at 350°C for various austempering times (45 min to 180 min). Experimental results showed that dual-matrix structures consisting of proeutectoid ferrite ? ausferrite were obtained in austempered ductile iron from intercritical austenitizing temperatures. It was determined that as the austempering time increased, the ausferritic structure became considerably clear and its volume fraction was almost constant (45-47%) after 90 min of austempering time. The yield and tensile strength of the samples decreased and the total elongation and breaking energy increased with increasing austempering times, but after the 120-min austempering time, both the total elongation and breaking energy of the samples decreased. It was established that the austempering times had no significant effect on the morphology of ausferrite. The best mechanical properties were obtained between 70-and 130-minute austempering times that can be defined as the processing window. In addition, it was determined that the DMS-ADI had similar austempering kinetics with the ADI.

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“…Austempered ductile iron (ADI) is one of the most widely used types of ductile iron produced by austempering heat treatment. ADI becomes an important material thanks to its unique mechanical properties, higher elongation, improved wear resistance, and service life 1–5 . Furthermore, ADI has notable fatigue and fracture toughness 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Investigation into microstructure and mechanical properties of heavy section nickel alloyed austempered ductile iron in accordance with austempering parameters

Ghoroghi

Varahram

Perseh

2021

Mat Design & Process Comms

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Austempered ductile iron (ADI) is one of the most widely used types of ductile iron produced by austempering heat treatment. ADI heavy section parts are employed in different industries owing to their unique mechanical properties. Cooling rate in thick parts is significantly low, so heavy section ductile iron parts should have an adequate austemperability for preventing pearlite formation in the middle of the casting. In order to achieve the proper austemperability and fully ausferritic structure, alloying elements like nickel are added to the melt. The objective of this work is to study the role of austempering parameters on nickel alloyed ADI specimens fabricated from 75‐mm‐thick Y‐block. Austempering temperature and time as main parameters in the austempering process are taken as the control variables. The heat treatment of austempering was performed at 320°C and 380°C for 60, 120, 180, and 240 min. It was possible to determine the best austempering conditions among those investigated in the paper, and the results showed that austempering at a higher temperature contributes to higher strength and hardness compared to lower austempering temperature. Furthermore, specimens that were austempered at 320°C for 120 min had better mechanical properties among other samples.

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Austempered Ductile Iron (ADI) Alternative Material for High-Performance Applications

Cited by 24 publications

References 5 publications

Tensile properties and fracture toughness at service temperatures of an optimized pearlitic ductile iron alloy for automotive crankshafts

Tensile properties and fracture toughness at service temperatures of an optimized pearlitic ductile iron alloy for automotive crankshafts

Effect of Austempering Times on the Microstructures and Mechanical Properties of Dual-Matrix Structure Austempered Ductile Iron (DMS-ADI)

Investigation into microstructure and mechanical properties of heavy section nickel alloyed austempered ductile iron in accordance with austempering parameters

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