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DOI: 10.1155/2014/856408
¤ OpenAccess: Gold
This work has “Gold” OA status. This means it is published in an Open Access journal that is indexed by the DOAJ.

Heat Treatment in High Chromium White Cast Iron Ti Alloy

Khaled M. Ibrahim,Mervat Ibrahim

Materials science
Eutectic system
Carbide
2014
The influence of heat treatment on microstructure and mechanical properties of high chromium white cast iron alloyed with titanium was investigated. The austenitizing temperatures of 980°C and 1150°C for 1 hour each followed by tempering at 260°C for 2 hours have been performed and the effect of these treatments on wear resistance/impact toughness combination is reported. The microstructure of irons austenitized at 1150°C showed a fine precipitate of secondary carbides (M 6 C 23 ) in a matrix of eutectic austenite and eutectic carbides (M 7 C 3 ). At 980°C, the structure consisted of spheroidal martensite matrix, small amounts of fine secondary carbides, and eutectic carbides. Titanium carbides (TiC) particles with cuboidal morphology were uniformly distributed in both matrices. Irons austenitized at 980°C showed relatively higher tensile strength compared to those austenitized at 1150°C, while the latter showed higher impact toughness. For both cases, optimum tensile strength was reported for the irons alloyed with 1.31% Ti, whereas maximum impact toughness was obtained for the irons without Ti-addition. Higher wear resistance was obtained for the samples austenitized at 980°C compared to the irons treated at 1150°C. For both treatments, optimum wear resistance was obtained with 1.3% Ti.
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    Heat Treatment in High Chromium White Cast Iron Ti Alloy” is a paper by Khaled M. Ibrahim Mervat Ibrahim published in 2014. It has an Open Access status of “gold”. You can read and download a PDF Full Text of this paper here.