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Materials Science and Technology Volume 28, 2012 - Issue 3
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Original Article

Low carbon high manganese bainitic steel

N BhowmikDepartment of Metallurgy and Materials Engineering, Bengal Engineering and Science University, Shibpur, Howrah711 103, India
,
S K GhoshDepartment of Metallurgy and Materials Engineering, Bengal Engineering and Science University, Shibpur, Howrah711 103, IndiaCorrespondence[email protected]
,
A HaldarR&D Division, Tata Steel Limited, Jamshedpur831 001, India
&
P P ChattopadhyayDepartment of Metallurgy and Materials Engineering, Bengal Engineering and Science University, Shibpur, Howrah711 103, India
Pages 282-287 | Received 09 Mar 2011, Accepted 31 Mar 2011, Published online: 12 Nov 2013
 
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Abstract

The present study concerns the mechanical properties of low carbon (0·05 wt-%) high Mn bainitic steel. The continuous cooling transformation diagram exhibited bainitic transformation without any prior diffusive transformation of austenite even for a cooling rate as low as 0·5°C/s. The bainitic steels have shown continuous elongation behaviour with attractive combination of strength (>1200 MPa) and elongation (>14%). The bainitic microstructure obtained after annealing treatment has yielded excellent combination of strength, uniform elongation, yield ratio and static toughness value.

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