NDLI: Mechanical properties and microstructure analysis of 0.5% Niobium alloyed ductile iron under austempered process in salt bath treatment

Content Provider	IEEE Xplore Digital Library
Author	Abdullah, B. Alias, S.K. Jaffar, A. Abd Rashid, A. Ramli, A.
Copyright Year	2010
Description	Author affiliation: Faculty of Biotechnology & Life Sciences, Universiti Industri Selangor, Malaysia (Ramli, A.) \|\| Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, MALAYSIA (Abdullah, B.; Alias, S.K.; Jaffar, A.; Abd Rashid, A.)
Abstract	The purpose of this work was to compare the mechanical and physical properties for 0.5% Niobium alloyed ductile iron (0.5% Nb-DI) with commercial ductile iron (DI) before and after austempering process. The materials for this investigation were produced by conventional CO2 sand casting process and machined to TS EN 10001 standards for tensile test and ASTM E23 for Charpy impact test. Hardness test, density test and polarization test were also done to the samples. Microstructure observations were made after 2% Nital chemical etched and the fractured surfaces obtained through broken samples of tensile and impact test were evaluated through Scanning Electron Microscopy (SEM). The samples were austenitized at 900°C for 1 hour followed by austempered in a salt bath at 350°C for 3 different holding times which were 1 hour, 2 hours and 3 hours subsequently. The samples were then let cooled to room temperature. All testing were done before and after heat treatment process. The newly developed Nb alloyed DI possessed significant improvement in term of mechanical properties and corrosion behavior in comparison with pure ductile iron. Enhanced properties of the materials make them suitable for various technical and industrial applications.
Starting Page	610
Ending Page	614
File Size	968045
Page Count	5
File Format	PDF
ISBN	9781424481002
e-ISBN	9781424481026
DOI	10.1109/ICMET.2010.5598431
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-10
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heat treatment Mechanical properties Silicon Iron Mechanical factors Nickel Copper Niobium Manganese
Content Type	Text
Resource Type	Article

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