scholarly journals Relation of the high-temperature treatment of high-speed steel to secondary hardening and red hardness

1920 ◽  
Vol 16 ◽  
pp. 521 ◽  
Author(s):  
H. Scott
Keyword(s):  
High Temperature ◽  
High Speed ◽  
High Speed Steel ◽  
Temperature Treatment ◽  
Secondary Hardening ◽  
High Temperature Treatment ◽  
Red Hardness

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.

AL TECH SUPER LMW-EXTRA

Alloy Digest ◽  
1981 ◽  
Vol 30 (10) ◽  
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Cutting Tool ◽  
High Speed Steel ◽  
Heat Treating ◽  
Temperature Performance ◽  
Heat Treated ◽  
Aircraft Alloys ◽  
Red Hardness ◽  
Specialty Steel

Abstract AL Tech Super LMW-Extra is high-molybdenum high-speed steel containing 8.25% cobalt to improved red hardness. It is most useful for cutting-tool applications in which wear resistance and high-temperature hardness are important properties. This grade should not be use where excessive shock or chatter are encountered. Super LMW-Extra is well suited to applications such as machining hard and heat-treated materials and machining both ferrous and nonferrous aircraft alloys. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on high temperature performance as well as heat treating and machining. Filing Code: TS-388. Producer or source: AL Tech Specialty Steel Corporation.

Effect of niobium and austenitizing temperature on the microstructures and properties of spray-deposited AISI M3:2 high speed steel

2021 ◽  
Vol 119 (1) ◽  
pp. 102
Author(s):  
Hebin Wang ◽  
Da Hong ◽  
Longgang Hou ◽  
Li Shen ◽  
Ping Ou ◽  
...  
Keyword(s):  
High Temperature ◽  
Grain Boundaries ◽  
High Speed ◽  
High Speed Steel ◽  
High Hardness ◽  
Spray Forming ◽  
Precipitation Strengthening ◽  
Austenitizing Temperature ◽  
The Matrix ◽  
Red Hardness

The microstructure and properties of niobium-containing AISI M3:2 high speed steels (HSSs) fabricated by spray forming and traditional casting have been investigated. The results show that fine and uniformly-distributed grains without macrosegregation appeared in the as-deposited HSSs that differ from those of as-cast HSSs. Nb mostly appears in primary MC carbides, whereas it contributes less to the formation of M6C carbides. The high stabilization of Nb-rich MC carbides can pin the grain boundaries during high-temperature austenitizing process, thus conferring a fine grains and raising the content of dissolved alloying elements. Enhanced precipitation strengthening and fine dispersion of NbC carbides throughout the matrix contribute to the high hardness and red hardness of Nb-containing HSS.

Structure and Phase Transformations upon Carburisation of High-Speed Steel

2006 ◽  
Vol 249 ◽  
pp. 269-274 ◽  
Author(s):  
Alexander S. Chaus
Keyword(s):  
Phase Transformations ◽  
High Speed ◽  
Metallic Matrix ◽  
High Speed Steel ◽  
Temperature Treatment ◽  
Alloying Elements ◽  
High Temperature Treatment ◽  
X Ray Diffraction ◽  
Carbide Phases ◽  
Structure And Phase Transformations

Diffusion effects of alloying elements on the structure and phase transformation during thermo-chemical treatment in AISI M2 high-speed steel additionally alloyed with vanadium, titanium and niobium have been investigated. The results of metallographic, X-ray diffraction, and electron microprobe analyses of the steels after casting, annealing, hot plastic deformation, carburising, quenching and tempering are discussed. The redistribution of alloying elements between the metallic matrix and carbide phases upon high-temperature treatment due to diffusion was shown to result in the structure and phase transformations in the steels studied.

VASCO M-33

Alloy Digest ◽  
1983 ◽  
Vol 32 (3) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Optimum Combination ◽  
Edge Strength ◽  
End Mills ◽  
Resistance To Wear ◽  
Red Hardness

Abstract VASCO M-33 is a high-molybdenum high-speed steel containing 8% cobalt which contributes materially to the superior red hardness of the steel. It is recommended highly for tools that require the optimum combination of high-temperature hardness, resistance to wear and cutting edge strength and retention. Typical applications for VASCO M-33 include broaches, end mills, lathe tools and drills. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-413. Producer or source: Teledyne Vasco.

Preparation of AlB12-Type Al-B Alloys

2017 ◽  
Vol 898 ◽  
pp. 872-878
Author(s):  
Qing Liang Wang ◽  
Xing Zhong Zhang ◽  
Hua Gui Huang ◽  
Li Shen ◽  
Jiu Zhou Zhao
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Close Contact ◽  
Vortex Method ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Immersion Method

AlB12-type Al-B alloys were prepared by high temperature treatment of AlB2-type Al-B alloy melts with different distribution morphologies of borides. The results show that when using the “immersion” method, the produced AlB2-type Al-B alloy melt (“alloy melt 1”) contain a small amount of AlB12 phase and many boride agglomerations. The AlB2-type Al-B alloy melt produced by using the “vortex” method (“alloy melt 2”) contains no AlB12 phase and exhibits a well dispersion of AlB2 particles. During the high temperature treatment, the AlB2 particles in close contact with each other in the alloy melts are prone to coalescence, causing the formation of relative large AlB12 particles. The high-speed stirring adopted during the high temperature treatment has an effect of prohibiting the coalescence of AlB2 particles in boride agglomerations.

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