Results 141 to 150 of about 402 (180)
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Microstructure evolution of carbidic austempered ductile iron at different austempering temperatures
Journal of Materials Science, 2020This work aims to elucidate the microstructure characteristics of each phase in carbidic austempered ductile iron and the nucleation and growth of acicular ferrite in an austempering temperature range of 250–450 °C. The research results showed that the carbides (Fe, Cr)3C obtained by the eutectic reaction had high indentation hardness and indentation ...
Yang, Penghui +7 more
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Influence of stepped austempering process on the fracture toughness of austempered ductile iron
Metallurgical and Materials Transactions A, 2001This research studied the effect of a two-step austempering process on the fracture toughness of ductile iron and compared it to that of the conventional upper- and lower-ausferrite austempered ductile irons (ADIs). The results showed that such a two-step austempering heat-treatment process yielded a fracture-toughness value equivalent to that of the ...
Cheng-Hsun Hsu, Tao-Liang Chuang
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Wear, 2020
Abstract The tribological behavior of austempered ductile iron (ADI) obtained at different austempering temperatures is investigated. The microstructure of ADI is consisted of spheroidal graphite, retained austenite and acicular ferrite. The volume fraction of retained austenite and the thickness of acicular ferrite increase with increasing ...
Yuzhou Du +5 more
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Abstract The tribological behavior of austempered ductile iron (ADI) obtained at different austempering temperatures is investigated. The microstructure of ADI is consisted of spheroidal graphite, retained austenite and acicular ferrite. The volume fraction of retained austenite and the thickness of acicular ferrite increase with increasing ...
Yuzhou Du +5 more
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The effect of reducing the austempering time on the fatigue properties of austempered ductile iron
Materials Science and Engineering: A, 2012Abstract The effect of reducing the austempering time on the high-cycle fatigue behavior of austempered ductile iron (ADI) has been investigated by subjecting samples to rotating bending and fatigue crack propagation tests. Starting from the same cast iron, two distinct types of ADI were austempered at the same temperature of 360 °C but for different
J. Felipe Dias +3 more
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Austempering and Austempered Ductile Iron Microstructure in Copper Alloyed Ductile Iron
Journal of Materials Engineering and Performance, 2003The variation in the austempered microstructure, the volume fraction of retained austenite, Xλ, the average carbon content of retained austenite, Cλ, their product XλCλ and the size of bainitic ferrite needles with austempering temperature for 0.6% Cu alloyed ductile iron have been investigated for three austempering temperatures of 270, 330, and 380 ...
Uma Batra, S. Ray, S. R. Prabhakar
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Study of Austempered Ductile Iron (ADI) on Varying Austempering Temperatures
2018Austempered ductile iron (ADI) proven itself as a significant manufacturing material due to its remarkable properties like withstanding high fatigue behavior, fracture toughness, wear resistance, ductility, etc. This paper reports the experimental results obtained on subjecting ADI specimens to thermal treatment, i.e., austempering and austenitization.
Gurmeet Singh +2 more
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The effects of austempering temperature and time onto the machinability of austempered ductile iron
Materials Science and Engineering: A, 2005Abstract Heat treating the ductile cast iron produced austempered ductile iron (ADI), which has outstanding mechanical properties that can be varied over a wide range by varying the heat treatment parameters. In the present work a series of test were conducted and the effects of austempering temperature and times onto the material properties was ...
Isik, YAHYA +3 more
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Advanced Materials Research, 2011
The microstructure and properties of austempered ductile iron with carbides was studied to increase the abrasive resistance of ADI. It was proven that the austempering temperature influences greatly the microstructure, impact toughness, hardness and abrasion resistance of CADI.
Jin Hai Liu +4 more
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The microstructure and properties of austempered ductile iron with carbides was studied to increase the abrasive resistance of ADI. It was proven that the austempering temperature influences greatly the microstructure, impact toughness, hardness and abrasion resistance of CADI.
Jin Hai Liu +4 more
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Materials & Design, 2008
Abstract Austempered ductile iron (ADI) has found enormous applications in recent years due to its high strength and hardness, coupled with substantial ductility and toughness. The high strength and hardness of ADI have caused many researchers and engineers to doubt the machinability of this material.
IŞIK, YAHYA, Cakir, MUSTAFA CEMAL
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Abstract Austempered ductile iron (ADI) has found enormous applications in recent years due to its high strength and hardness, coupled with substantial ductility and toughness. The high strength and hardness of ADI have caused many researchers and engineers to doubt the machinability of this material.
IŞIK, YAHYA, Cakir, MUSTAFA CEMAL
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Tensile properties of copper alloyed austempered ductile iron: Effect of austempering parameters
Journal of Materials Engineering and Performance, 2004A ductile iron containing 0.6% copper as the main alloying element was austenitized at 850 °C for 120 min and was subsequently austempered for 60 min at austempering temperatures of 270, 330, and 380 °C. The samples were also austempered at 330 °C for austempering times of 30–150 min.
U. Batra, S. Ray, S. R. Prabhakar
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