Results 141 to 150 of about 815,373 (170)
Transactions of the Indian Institute of Metals, 2019 A transmission electron microscope was used to study the morphology of austenite and ferrite in austempered ductile iron obtained through conventional and two-step austempering process. In this investigation, two compositions of ductile iron with carbon equivalent 4.3% (alloy 1) and 3.1% (alloy 2) were selected. Both alloys were austenitized for 60 min
Vinayak Dakre +3 more
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Mechanical Characterization of Austempered Ductile Iron Obtained by Two Step Austempering Process
Transactions of the Indian Institute of Metals, 2017 Austempered ductile iron (ADI) is known to have a good combination of mechanical properties due its unique ausferrite microstructure. The strength of ADI is mainly a function of the austempering temperature and the stability of ausferrite matrix. To increase the stability of the ausferritic matrix, two stage austempering processes was developed. During
Vinayak Dakre +3 more
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The Effect of Two-Step Austempering on Abrasion Wear Characteristics of the Ductile Cast Iron
Lecture Notes in Mechanical Engineering, 2020 This paper focuses on the effect of two-step austempering on abrasion wear characteristics of the ductile cast iron. The single-step (conventional) and two-step austempering were employed for the samples. There were four treatments. For all samples, austenitization at 900 °C was done. The first treatment comprised of conventional austempering at 400 °C.
C. S. Wadageri +4 more
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Materials & Design, 2008 Abstract The aim of the present study is to characterize mainly fracture toughness as well as the other mechanical properties of austempered ductile iron produced using both single-step and two-step austempering processes. The effect of alloying with Ni and Mo has been investigated.
Ayman Elsayed +3 more
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Microstructures of Cu-Alloyed Ductile Cast Iron Treated by Two-Step Austempering
Solid State Phenomena, 2011 The excellent mechanical properties of austempered ductile iron are due to the unique matrix microstructure called “ausferrite”. Such microstructure is obtained from the first stage reaction during isothermal transformation of austenite into ferrite and high carbon austenite.
Usanee Kitkamthorn
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A heterostructured bainitic steel produced by two-step austempering and low-temperature ausforming
Scripta Materialia, 2023 Tianyu Zhang +9 more
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Materials & Design, 2003 Austempered ductile cast iron (ADI) has emerged as an important engineering material in recent years because of its excellent mechanical properties. These include high strength with good ductility, good wear resistance, fatigue strength and fracture toughness. It is therefore considered as an economical substitute for wrought or forged steel in several
Jianghuai Yang, Susil K. Putatunda
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Improvement in fracture toughness of austempered ductile iron by two-step austempering process
International Journal of Cast Metals Research, 2010 Abstract Ductile cast iron samples were austenitised at 900°C and subjected to two types of austempering called as conventional austempering and two-step austempering. Five different temperatures, 280, 300, 320, 350, 380 and 400°C, with an austempering time of 2 h, were chosen for conventional austempering.
K.S. Ravishankar +2 more
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Mechanical Properties of a Medium Carbon Low Alloy Steel Processed by Two Step Austempering Process
Materials Science Forum, 2010 A new bainitic steel with a combination of exceptionally high yield strength and fracture toughness has been developed. This steel has been synthesized by austempering a medium carbon low alloy steel by a novel two-step austempering process. The influence of this two-step austempering on the microstructure and the mechanical properties of this new ...
Susil K. Putatunda +2 more
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Materials Science and Engineering: A, 2004 Abstract The influence of a novel two-step austempering process on the microstructure and the near threshold fatigue crack growth behavior of austempered ductile cast iron (ADI) were investigated. Cylindrical tensile and compact tension (CT) specimens (for fatigue threshold tests) were prepared from an alloyed nodular ductile cast iron as per ASTM ...
Jianghuai Yang, Susil K. Putatunda
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