Diffusion Induced Changes in Cast and Wrought M2 High-Speed Steel Subject to Homogenisation Annealing

2019 ◽  
Vol 22 ◽  
pp. 24-33 ◽  
Author(s):  
Alexander S. Chaus ◽  
Martin Sahul ◽  
Matej Bračík
Keyword(s):  
High Temperature ◽  
High Speed ◽  
High Speed Steel ◽  
Eutectic Carbide ◽  
M2 High Speed Steel ◽  
Primary Focus ◽  
Induced Changes ◽  
Kinetics Of

The influence of annealing at 1200 °C for 2, 4 and 8 h on the carbide microstructure of AISI M2 type high-speed steel obtained by both the foundry and conventional metallurgy technologies has been studied. The primary focus was on the kinetics of eutectic carbide decomposition and dissolution in both the cast and wrought M2 high-speed steels under the effect of high temperature.

Kinetics of borided AISI M2 high speed steel

Vacuum ◽  
2011 ◽  
Vol 86 (4) ◽  
pp. 391-397 ◽  
Author(s):  
I. Ozbek ◽  
C. Bindal
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
M2 High Speed Steel ◽  
Kinetics Of

Diffusion Induced Changes in Eutectic Carbides in Wrought M2 High-Speed Steel at Austenitising

2015 ◽  
Vol 365 ◽  
pp. 5-10 ◽  
Author(s):  
Alexander S. Chaus ◽  
Matej Beznák ◽  
Miroslav Sahul
Keyword(s):  
High Speed ◽  
Diffusion Processes ◽  
Volume Fraction ◽  
High Speed Steel ◽  
Heat Treatments ◽  
Austenite Grain Size ◽  
Eutectic Carbides ◽  
M2 High Speed Steel ◽  
Primary Focus ◽  
Primary Carbides

The influence of heat treatments on the microstructure of AISI M2 type high-speed steel obtained using conventional metallurgy has been studied. The primary focus was on the effects of austenitisation temperatures on the behaviour of the initial eutectic carbides during austenitisation. In order to investigate kinetics of both the microstructure and phase transformations in eutectic carbides upon heat treatments with respect to diffusion processes, different techniques of electron scanning microscopy and energy dispersive X-ray spectrometry have been used. The effect of the austenitisation temperature on the primary austenite grain size, martensite microstructure and volume fraction, size distribution, and morphology of the primary carbides of eutectic origin as well as their behaviour during heat treatment in the wrought M2 high-speed steel was thoroughly investigated.

Diffusion Induced Changes in Eutectic Carbides in Inoculated M2 High-Speed Steel at Austenitising

2014 ◽  
Vol 353 ◽  
pp. 61-66 ◽  
Author(s):  
Alexander S. Chaus ◽  
Matej Beznák ◽  
R. Šuba ◽  
M. Bajčičák
Keyword(s):  
Thermal Stability ◽  
Chemical Composition ◽  
High Speed ◽  
High Speed Steel ◽  
Eutectic Carbides ◽  
M2 High Speed Steel ◽  
Induced Changes ◽  
Thermal Stability Of ◽  
Cast Microstructure

Three types of eutectic carbides, M2C, M6C and MC, were revealed in the as cast microstructure of the AISI M2 type high-speed steel inoculated with different additions to the melt. The thermal stability of these carbides were analysed in the range of austenitising temperature from 1180°C up to 1260°C. It was found that the M6C and MC eutectic carbides were stable up to 1240°C and 1260°C, respectively. The M2C carbide started to decompose at substantially lower austenitising temperature and its thermal stability was shown to depend on both the morphology and the chemical composition, and the origin of the inoculating additions used before casting.

CRUCIBLE CPM REX 121

Alloy Digest ◽  
2001 ◽  
Vol 50 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
High Temperature ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Maximum Hardness ◽  
Temperature Performance ◽  
Red Hardness ◽  
Cutting Speeds

Abstract CPM Rex 121 is a super high-speed steel with significantly higher wear resistance and red hardness than other high-speed steels. It is best suited for applications requiring high cutting speeds. It may provide an alternative to carbide where carbide cutting edges are too fragile. The annealed hardness is approximately 350-400 HB, and maximum hardness is approximately 72 HRC. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity as well as fracture toughness. It also includes information on high temperature performance and wear resistance as well as heat treating and surface treatment. Filing Code: TS-591. Producer or source: Crucible.

LATROBE M2 EUR

Alloy Digest ◽  
2010 ◽  
Vol 59 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
General Purpose ◽  
Steel Company ◽  
M2 High Speed Steel ◽  
Specialty Steel

Abstract M2 EUR is the European version of the general purpose ASTM M2 high speed steel. This datasheet provides information on composition, physical properties, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-691. Producer or source: Latrobe Specialty Steel Company.

Metallographic analysis of M2 high speed steel granules

2019 ◽  
pp. 78-85
Author(s):  
L. E. Afanasieva
Keyword(s):  
Solid Solution ◽  
Cellular Structure ◽  
High Speed ◽  
Solution Structure ◽  
Supersaturated Solid Solution ◽  
High Speed Steel ◽  
Metallographic Analysis ◽  
M2 High Speed Steel ◽  
Melt Composition

The article is devoted to the metallographic analysis of the M2 high-speed steel granules. The study is based on the investigation of the microstructure of the M2 high-speed steel granules obtained by melt atomization. It is demonstrated that granules of similar size can harden both by chemically separating and chemically non-separating mechanism. These last ones have supersaturated solid solution structure of the liquid melt composition, a dispersed dendritic-cellular structure and an increased microhardness HV = 10267±201 MPa.

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