Das, Samar and Ghosh, Arindam and Chatterjee, S and Ramachandrarao, P (2003) Microstructural characterization of controlled forged HSLA-80 steel by transmission electron microscopy. Materials Characterization, 50 (4-5). pp. 305-315.
Restricted to NML users only. Others may use ->
In this study, transmission electron microscopy (TEM) was used to evaluate the effect of controlled forging followed by cooling at various rates on microstructure of an HSLA-80 steel. The observations demonstrate that water-quenched steel has finer multiphase constituents of lath martensite, bainite and twined martensite, whereas air-cooling has resulted in a mixture of bainitic ferrite, retained austenite or MA constituents along with some Widmanstatten ferrite. When the steel is cooled in sand, the maximum volume fraction of polygonal ferrite (PF) was produced which, in turn, increased volume fraction of MA constituents. Precipitation of fine -Cu, Nb and Ti carbides and carbonitrides was observed and identified using energy dispersive spectrometric analysis (EDS) and electron diffraction.
|Uncontrolled Keywords:||Steel; EDS; TEM|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||30 Sep 2009 16:17|
|Last Modified:||14 Dec 2011 14:47|
Repository Staff Only: item control page