Results 141 to 150 of about 405 (179)

Influence of stepped austempering process on the fracture toughness of austempered ductile iron

Metallurgical and Materials Transactions A, 2001
This 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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Microstructure evolution of carbidic austempered ductile iron at different austempering temperatures

Journal of Materials Science, 2020
This 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, Fu, Hanguang, Absi, Rafik, Bennacer, Rachid, Darcherif, Moumen, Ma, Shengqiang, Lin, Jian, Guo, Xingye   +7 more
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Tribological behavior of austempered ductile iron (ADI) obtained at different austempering temperatures

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, Xiangqian Gao, Xiaolong Wang, Xin Wang, Yanfeng Ge, Bailing Jiang   +5 more
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Study of Austempered Ductile Iron (ADI) on Varying Austempering Temperatures

2018
Austempered 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, Sahil Sharma, Dilkaran Singh   +2 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, 2012
Abstract 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, Gabriel O. Ribeiro, Denilson J. Carmo, Jefferson J. Vilela   +3 more
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The effects of austempering temperature and time onto the machinability of austempered ductile iron

Materials Science and Engineering: A, 2005
Abstract 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, Cakir, MUSTAFA CEMAL, Salar, B, Bayram, A   +3 more
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Effect of Austempering Temperature on Microstructure and Properties of Carbidic Austempered Ductile Iron

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, Guo Lu Li, Xue Bo Zhao, Xiao Yan Hao, Jian Jun Zhang   +4 more
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Austempering and Austempered Ductile Iron Microstructure in Copper Alloyed Ductile Iron

Journal of Materials Engineering and Performance, 2003
The 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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Martempering and Austempering

Abstract Martempering and austempering processes may eliminate the need for conventional oil quenching and tempering. This article presents the suitability of steels for martempering and austempering. It discusses the compositions of oils suitable for marquenching and modified marquenching and also presents safety precautions recommended
Lauralice C.F. Canale, Xinmin Luo, George E. Totten   +2 more
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Austempered Steel

2013
Abstract This article provides a detailed discussion on the factors involved in the selection of steels for austempering, including section thickness limitations of steel parts and modifications of austempering practice. The selection of steel for an austempered component is based on the processing characteristics of the heat treating ...
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