Effect of thermomechanical processing on microstructural evolution in precipitation strengthened ferrite steel
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
View Archive Info| Field | Value | |
| Title |
Effect of thermomechanical processing on microstructural evolution
in precipitation strengthened ferrite steel
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| Creator |
Pradhan, Ratikanta
Karmakar, Anish Ghosh, M Chakrabarti, Debalay Mukherjee, S |
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| Subject |
Materials Charcterization
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| Description |
The present study is focused on processing simulation in Gleeble® to understand the effect of thermomechanical processing
parameters, especially thin-slab casting rolling (TSCR) process, on the ferrite grain structure and precipitation
in a nano-precipitation strengthened ferritic steel. The double-hit compression test confirmed that heavy deformation
in the range of 900–850 °C can accumulate sufficient strain in deformed austenite that is required to achieve significant
ferrite grain refinement. Subsequent simulation of conventional hot-strip mill processing route showed fully ferritic
microstructure upon isothermal holding at and above 650 °C (for coiling simulation). Holding at lower temperatures
(≤ 600 °C) generate pearlite and bainite, which are undesirable for formability. Finally a TSCR-type of processing schedule
is applied maintaining a constant deformation temperature (870 °C) and isothermal holding temperature (650 °C) to
understand the effect of equalization entry temperature (Teet). A low equalization entry temperature (900 °C) was found to
be beneficial to generate fine ferrite grains with fine precipitates during processing by TSCR route which is a novel finding.
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| Publisher |
Springer nature, Switzerland
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| Date |
2019
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| Type |
Article
NonPeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://eprints.nmlindia.org/8103/1/Precipitation_strengthened_ferritic_steel_Springer_nature.pdf
Pradhan, Ratikanta and Karmakar, Anish and Ghosh, M and Chakrabarti, Debalay and Mukherjee, S (2019) Effect of thermomechanical processing on microstructural evolution in precipitation strengthened ferrite steel. SN Applied science . |
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| Relation |
https://doi.org/10.1007/s42452-019-0674-2
http://eprints.nmlindia.org/8103/ |
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