ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The ferrite grain size refining is the unique mechanism for increasing both mechanicalstrength and formability of steels. Steel with an ultra-fine ferrite grained structure must show a goodrelation between mechanical strength, ductility and toughness, while the low carbon contentenhances good welding characteristics. The objective of this work is to investigate the influence ofwarm rolling on the evolution of texture in a microalloyed low carbon-manganese (0.11%C,1.41%Mn, 0.028%Nb and 0.012%Ti) steel with ultra-fine grains produced through out quenching,warm rolling, followed by sub and intercritical annealing. The evolution of restoration process -recovery and recrystallization - was followed by optical and scanning microscopy. After subcriticalannealing, the microstructure was formed by spheroidal iron carbides and a ferritic recoveredmatrix. Otherwise, after intercritical annealing, the microstructure was composed mainly by ultrafinegrain polygonal ferrite, MA (martensite-austenite) constituent and carbides. The mechanicalbehaviour of the steel was evaluated using tensile tests. The mechanical properties have beencorrelated with the evolution of texture in the ultra-fine grained ferrites
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.610.pdf
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