Journal ArticleDOI
Mechanical properities of an HSLA bainitic steel subjected to controlled rolling with accelerated cooling
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TLDR
In this article, the effects of processing parameters such as cooling start temperature and cooling rates on the final microstructure and mechanical properties of a low carbon bainitic steel were studied.Abstract:
Controlled rolling followed by accelerated cooling was utilised in laboratory simulations to study the microstructure and mechanical properties of an HSLA low carbon bainitic steel. The effects of processing parameters, such as cooling start temperature and cooling rates, on the final microstructure and mechanical properties were studied. Optical microscopy and transmission electron microscopy were used to evaluate the complex microstructures consisting of polygonal ferrite, pearlite, bainite and martensite/retained austenite constituent. The use of the multiple regression analysis allowed establishment of the relationships between mechanical properties and accelerated cooling variables: cooling rates and cooling start temperatures.read more
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Stability of (Ti, M)C (M = Nb, V, Mo and W) carbide in steels using first-principles calculations
TL;DR: In this article, the lattice parameters, formation energies and bulk moduli of (Ti, M)C and M(C, Va) with the B1 crystal structure have been investigated using first-principles calculations, where M = Nb, V, Mo and W.
Journal ArticleDOI
Influence of Mo content on microstructure and mechanical properties of high strength pipeline steel
TL;DR: In this paper, the effect of the Mo content on the microstructure and mechanical properties of high strength pipeline steel X80 was investigated using optical microscopy and scanning electron microscopy.
Journal ArticleDOI
Effect of vanadium and titanium modification on the microstructure and mechanical properties of a microalloyed HSLA steel
TL;DR: In this paper, modifications to the base DMR-249A steel composition have been investigated with the objective of producing thicker gage plates (24mm) capable of meeting the specified properties in the normalized condition.
Journal ArticleDOI
Impact toughness and microstructure relationship in niobium- and vanadium-microalloyed steels processed with varied cooling rates to similar yield strength
TL;DR: In this article, the authors describe the relationship between microstructure and impact toughness behavior as a function of cooling rate for industrially processed Nb- and V-microalloyed steels of almost similar yield strength.
Journal ArticleDOI
Effect of cooling rate on the microstructure and mechanical properties of Nb-microalloyed steels
TL;DR: In this article, the effect of cooling rate on the microstructure and mechanical properties of Nb-microalloyed steels that were processed as structural beams at three different cooling rates was described.
References
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Journal ArticleDOI
Microstructure and Mechanical Properties of Bainite Containing Martensite and Retained Austenite in Low Carbon HSLA Steels
TL;DR: The microstructure of a new low carbon HSLA steel with a high tensile strength and a high toughness in the as-hot forged condition for automotive parts was observed in detail in an 0.17 to 0.04 o C/s was characterized to be martensite-austenite constituent islands in featureless matrix.
Journal ArticleDOI
Accelerated cooling: a physical metallurgy perspective
TL;DR: In the early days of accelerated cooling, it was used exclusively on hot strip mills, mainly to reduce the length of run-out tables otherwise required for low temperature coiling.
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