Solidification of high speed steels

Abstract

high speed steels. That steel presented a great advantage over high carbon steels, which had been largelyHigh speed steels are ferrous based alloys of the applied so far in cutting tools, since it became hard Fe-C-X multicomponent system where X represents a group of alloying elements when air cooled from a temperature from which most comprising mainly Cr, W or Mo, V, and Co. These steels required water quenching for hardening.2-4 The steels are mainly used for cutting tools, since they most important development during the following are characterised by their capacity to retain a high with a view to leaner alloy contents and cheaper alloying elements, mainly substituting for tungsten

Phase Transformations in High Alloy Cold Work Tool Steel

“…The obtained results extend the data obtained by others authors related to ledeburitic tool steels [1], [11], [16], [17], [23], [27], [31] and [32]. The results may be useful for the next thermodynamic analysis of phase transitions using the Thermo-Calc and Dictra software.…”

“…The small amount of austenite dendrites was also present. This type of microstructure is quite differrent compared to [11], [16] to [18], [22], [23], [27], [28], [31] and [32], where microstructures containing a large amount of austenite dendrites or a large amount of primary carbides in dependence from the chemical composition of the ledeburitic tool steels are present.…”

“…The main advantages of PM high alloy tool steel are the homogeneous distribution and fine size of carbides and uniform chemical composition in cross section, thereby better properties are achieved [11] and [12]. Due to specific properties cold work tool steels have found a wide spectrum of applications in various industries at blanking, forming, shearing, punching and other applications [13] to [15].…”

Avaliação da perda de massa de revestimento duro depositado por soldagem com arame tubular de liga FeCrC-Ti

“…Uma possibilidade de obtenção de carbonetos é quando da solidificação de materiais com altos teores de Carbono e de elementos formadores de carbonetos como Vanádio, Molibdênio, Tungstênio e Titânio Os carbonetos podem ser obtidos pelo controle das variáveis de processo que proporcionam a solidificação em condições tais que favoreçam a formação de carbonetos duros em uma matriz dúctil [12,13]. Nesses casos os revestimentos podem ser aplicados por processos de soldagem, nos quais também ocorre a fusão do material base [14,15].…”

Freeform Laser Consolidated H13 and CPM 9V Tool Steels

“…When the tool steel contains carbon higher than roughly 1.3%, the primary solidification phase would be austenitic c [35]. However, a high-rate solidification (such as, induced by laser deposition) would be kinetically favorable to the c as the primary solidification phase, even though the carbon content is \1.3%, in which with normal equilibrium solidification the primary phase should be ferritic d instead [36,37].…”