Hot Deformation Behavior of As-cast AISI M2 High-speed Steel Containing Mischmetal

Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold

“…Among them, M2 is one of the most popular one [1][2][3]. Traditionally, M2 high-speed steel manufacturing includes two steps, namely the mold casting and subsequent hot working like forging and rolling, which can break the coarse carbides network and refine structure [4,5].…”

“…Typical as-cast structure of M2 highspeed steel consists of dendrites surrounded by inter-dendritic network of eutectic carbides [1,2]. These carbides, however, are coarse and severely deteriorate the performances of M2 high-speed steel [2,3]. Thus it is essential to make the carbides refine and their homogeneity improve.…”

“…Up to now, most researchers have focused on forging [3], heat treatment [8][9][10][11], and addition of alloy elements [12,13], which can, to a certain extent, refine the carbides network and size, but few concentrate on the initial solidified process of M2 high-speed steel.…”

Effects of initial aging time on processing map and microstructures of a nickel-based superalloy

“…The optimum hot working parameters for Al6063/0.75Al 2 O 3 /0.75Y 2 O 3 nano-composite were identified, and the flow instability characteristics were validated by processing maps and micrographs [37]. Additionally, the processing maps were developed for some other important alloys or composites, such as Al-Cu-Li alloy [38], Al-Cu-Mg alloys microalloyed with Sn [39], DC cast Al-15% Si alloy [40], SiC particles reinforced metal matrix composites [41], as-cast AISI M2 high-speed steel containing Mischmetal [42], Aluminum-5 wt% B4C Composite [43], near-α titanium alloy IMI834 [44], extruded Mg-12Li-1Zn BCC alloy [45], as-cast Ti-43Al-4Nb-1.4W-0.6B alloy [46], (SiCpþMg2B2O5w)/6061 Al hybrid and SiCp/6061 Al composites [47], Al-Cu-Li-Sc-Zr alloy [48], 7005 aluminum alloy [49], and 800H alloy [50].…”

Concurrent Enhancement of Ductility and Efficiency for Annealing High‐Speed Steel via Tuning Cooling Rates

“…Crack nucleation and propagation occur readily at the interface between the matrix and carbides especially around those micrometer-sized PCs that are products of eutectic reaction. [6] Extensive efforts have been devoted to obtain PCs with homogenous distributions and fine dimensions such as deformation, [7,8] modification, [9,10] and carbide decomposition. [11,12] Recently, the correlation between ductility and submicrometer-sized ECs precipitated during annealing has been revealed.…”