The Effect of Holding Time on the Mechanical Properties of Austempered Ductile Iron PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Effect of Holding Time on the Mechanical Properties of Austempered Ductile Iron PDF full book. Access full book title The Effect of Holding Time on the Mechanical Properties of Austempered Ductile Iron by Dody Prayitno. Download full books in PDF and EPUB format.
Author: Dody Prayitno Publisher: ISBN: Category : Iron, Nodular Languages : en Pages : 280
Book Description
Project describes experiments done to study the effects of some variants in the austempering process on mechanical properties, especially fatigue of ADI. The calculation of the stress intensity factor is also looked into.
Author: Dody Prayitno Publisher: ISBN: Category : Iron, Nodular Languages : en Pages : 280
Book Description
Project describes experiments done to study the effects of some variants in the austempering process on mechanical properties, especially fatigue of ADI. The calculation of the stress intensity factor is also looked into.
Author: Ranjit Kumar Panda Publisher: LAP Lambert Academic Publishing ISBN: 9783659697043 Category : Languages : en Pages : 124
Book Description
Even since its discovery in 1948, the use of ductile iron is increasing continuously, this is due to the combination of its various excellent mechanical properties. Excessive amount of research is being carried out to develop even better properties. Austempererd ductile iron is the most recent development in the area of ductile iron or S.G. iron. This is formed by an isothermal heat treatment of the ductile iron. The newly developed austempered ductile iron is now replacing steel in many fields so it has becoming very important to various aspects of this material. In the present work the effect of copper along with the process variables (austempering temperature and austempering time) on the properties (Hardness, Tensile strength and Elongation) and microstructure of ductile iron is studied. With increasing austempering time hardness, tensile strength and elongation are increasing but with increasing austempering temperature hardness and tensile strength are decreasing and elongation increasing. Austempered ductile iron with copper is showing some higher strength, hardness and lower elongation than the austempered ductile iron without copper. In microstructure ferrite is increasing
Author: P. Atanda Publisher: ISBN: Category : Ductile iron Languages : en Pages : 11
Book Description
The effect of process parameters on the mechanical properties of iso-thermally treated ductile irons was investigated in this study. Sets of ductile irons produced by sandwich method from a rotary furnace melt were given iso-thermal austempering treatments using commercial neutral salt baths. The samples were preheated at 350°C and held for 1 h in a muffle furnace, followed by ausenitizing in an ausenitizing salt bath furnace containing a mixture of BaCl2 and NaCI, (in the ratio 3:2) at 900°C and soaking at that temperature for 1 h. The samples were immediately transferred to the austempering salt bath furnace containing a mixture of NaNO3 and KNO2 in the ratio 1:1. Sets of the samples were soaked at 300°C for between 5 to 240 min and were all later cooled in air. The austempering procedure was repeated at 350 and 400°C for a second and third groups of samples, respectively. The results showed that austempering at lower temperature (300°C) produced a relatively high tensile strength of 1400 MPa, after 150 min holding compared with austempering at the higher temperature (400°C) which produced a relatively lower strength of 1200 MPa at the same holding time. However, the optimal processing window for the austempering was established to be the intermediate temperature of 350°C after a holding time of 150 min. At this processing window, austempering yielded the optimum combination of mechanical properties of 1502 MPa UTS, 7.5 % elongation, and impact energy of 108 J. These properties correspond to a microstructure consisting of a plate-like morphology of ausferrite and retained austenite.
Author: Tapan Sarkar Publisher: ISBN: Category : Electronic books Languages : en Pages : 0
Book Description
In the present investigation mechanical properties of austempered ductile iron (ADI) joints have been studied using two developed electrodes containing with and without Ce content and co-related between microstructure and mechanical properties. Austenitization was done at 900°C for 2 h and austempering at 300 and 350°C for 1.5, 2 and 2.5 h holding time. At 300°C microstructure shows needle shaped bainitic ferrite with lower amount of retained austenite indicate higher hardness and lower impact toughness. However, at 350°C shows feathery shaped bainitic ferrite with higher amount of retained austenite to demonstrate lower hardness and higher impact value. Both the welded joints at both austempering conditions tensile samples broke from the base metal indicates 100% joint efficiency. Fatigue life was varied with varying the austempering temperature and shows higher fatigue life at 350°C austempering temperature presence of higher amount of retained austenite and finer the bainitic ferrite size with smaller graphite nodules. Ce in weld metals to refine the microstructure and shows higher impact toughness and fatigue strength with lower hardness value at both austempering temperatures.
Author: John Chinella Publisher: ISBN: Category : Languages : en Pages : 58
Book Description
This study describes the resistance to penetration and the damage to austempered ductile iron (ADI) from ballistic impacL The resistance to penetration is determined with an average velocity with a 50% probability for complete penetration, the V-50 ballistic limit. The responses of the ADI material to impact are shown by observations of penetration modes, microstructural changes, and fracture topographies. Mechanical properties and ballistic limits are shown for two variations of the austemper process. ADI targets reveal a capability for multiple impacts without structural failures. Penetration modes include ductile hole growth, radial fracture, petaling, and scabbing. V-50 velocities of ADI with lower values of hardness and strength are equal or greater than the V-50 velocities of ADI with higher values of hardness and strength. Graphite spheroids of this ductile cast iron appear to affect plastic deformation and penetration modes by localizing stresses, microstructural changes, and fracture.
Author: D.O. Northwood Publisher: WIT Press ISBN: 1784663077 Category : Technology & Engineering Languages : en Pages : 179
Book Description
Containing selected papers on Materials Characterisation this volume presents the latest research in the field. Material and contact characterisation is a rapidly advancing field that requires the application of a combination of numerical and experimental methods. Contributions come from both industry and research communities using computational methods and performing experiments. Demand for high quality production from both industry and consumers has led to rapid developments in materials science and engineering. Current research is focussed on modification technologies that can increase the surface durability of materials. The characteristics of the system reveal which surface engineering methods should be chosen and as a consequence it is essential to study the combination of surface treatment and contact mechanics. The accurate characterisation of the physical and chemical properties of materials requires the application of both experimental techniques and computer simulation methods in order to gain a correct analysis. A very wide range of materials, starting with metals through polymers and semiconductors to composites, necessitates a whole spectrum of characteristic experimental techniques and research methods. The papers in this book examine various combinations of techniques across various topics.
Author: Rafael Colás Publisher: CRC Press ISBN: 1000031675 Category : Technology & Engineering Languages : en Pages : 3918
Book Description
The first of many important works featured in CRC Press’ Metals and Alloys Encyclopedia Collection, the Encyclopedia of Iron, Steel, and Their Alloys covers all the fundamental, theoretical, and application-related aspects of the metallurgical science, engineering, and technology of iron, steel, and their alloys. This Five-Volume Set addresses topics such as extractive metallurgy, powder metallurgy and processing, physical metallurgy, production engineering, corrosion engineering, thermal processing, metalworking, welding, iron- and steelmaking, heat treating, rolling, casting, hot and cold forming, surface finishing and coating, crystallography, metallography, computational metallurgy, metal-matrix composites, intermetallics, nano- and micro-structured metals and alloys, nano- and micro-alloying effects, special steels, and mining. A valuable reference for materials scientists and engineers, chemists, manufacturers, miners, researchers, and students, this must-have encyclopedia: Provides extensive coverage of properties and recommended practices Includes a wealth of helpful charts, nomograms, and figures Contains cross referencing for quick and easy search Each entry is written by a subject-matter expert and reviewed by an international panel of renowned researchers from academia, government, and industry. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
Author: Dody Prayitno
Author: Dody Prayitno
Author: Ranjit Kumar Panda
Author: P. Atanda
Author: Al Alagarsamy
Author: Eduard Dorazil
Author: Tapan Sarkar
Author: Y. Iio
Author: John Chinella
Author: D.O. Northwood
Author: Rafael Colás