Development of 0.2C-CrMnMoV Ultra High Strength Steel
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
View Archive Info| Field | Value | |
| Relation |
http://eprints.nmlindia.org/6897/
http://ijset.com/ijset/publication/v3s2/IJSET_2014_206.pdf |
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| Title |
Development of 0.2C-CrMnMoV Ultra High Strength Steel
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| Creator |
Maity, S K
Rajak, A K Chandra Shekhar, M Singh, S D |
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| Subject |
Steel Metallurgy
Materials Science Structural Properties |
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| Description |
A study was carried out to develop a low alloy ultra high
strength steel by induction melting and thermomechanical
treatment (TMT) containing alloying elements like carbon,
manganese, molybdenum, chromium and vanadium. A
base alloy was prepared with 0.24%C, 1.16% Mn, 0.23%
Si, 5.61% Cr, 0.42%V, 1.01% Mo, 0.026%S and 0.032%P.
It showed tensile strength of 1467 MPa, yield strength of
about 1180 MPa, impact strength of 6.3J and elongation of
5.9% in as-tempered condition. Other alloy was prepared
by addition of 0.054% titanium with the base composition.
It displayed tensile strength, yield strength, impact
toughness and % elongation of 1615 MPa, 1240 MPa,
8.2J and 6.15%, respectively. The optical, SEM and TEM
microstructures confirmed that the base alloy and the
titanium alloy consisted with tempered lath martensites.
The remaining part of the ingot was further processed by
the thermomechanical treatment. The ingots were rolled in
two passes, initially at 950 C and subsequently at 850 C
followed by immediate cooling in oil. The TMT plates of
the base alloy confirmed the tensile strength of 1755 MPa,
yield strength in excess of 1460 MPa and impact strength
of 9.1J. The titanium added TMT plate displayed tensile
strength of 1860 MPa, yield strength of 1580 MPa and
impact strength of 10.1J. Microstructures of titanium
added alloy consisted finer lath martensite and precipitates
of titanium carbides/carbonitrides. It was observed that the
addition of titanium significantly improved the mechanical
properties of 0.2C-Cr Mn Mo V alloys and the mechanical
properties were also improved significantly by
thermomechanical treatment.
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| Publisher |
IJSET
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Identifier |
http://eprints.nmlindia.org/6897/1/maitySK-2014-1.pdf
Maity, S K and Rajak, A K and Chandra Shekhar, M and Singh, S D (2014) Development of 0.2C-CrMnMoV Ultra High Strength Steel. International Journal of Scientific Engineering and Technology, 3(2) (IF-0.4). pp. 101-108. |
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