327 Wear Resistance of Alloy Tool Steel Surface-Modified by Quenching/Aluminum Film Deposition/Diffusion/Nitriding

Nd-YAG lasers have been successfully used in recent years as reliable heat source to surface modification of engineering materials such as laser surface re-melting. In the present study, X12 tool steel was surface modified by using pulse Nd-YAG laser technique. Laser parameters are selected of 12 J pulse energy, 15 Hz frequency, 20 mm defocus length, 6 ms pulse duration, and 5.6 mm /s mm scanning speed. These parameters were chosen after undertaking trials to give suitable parameters in this process. Optical microscopy and backscattered scanning electron microscopy (SEM) with EDS and X-ray diffraction techniques were used to analyse the microstructure changes of the surface of tool steel. Wear resistance test was achieved by using a pin on disk method. The reason for this work is to improve the wear resistance for surface layer of tool steel after changes the morphology of the structure by rapid solidification during laser re-melting. In general, the structure consists of the dendrite and cellular structures with δ ferrite formed under conditions of rapid solidification without the primary coarse carbides. After laser melting, the results of the structure at the surface layers show an increase in wear resistance.

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117 Evaluation of Thickness of the Surface Modified Layer of Alloy Tool Steel Treated by Cavitation Peening Using an Eddy Current Method

The Proceedings of Conference of Tohoku Branch ◽

10.1299/jsmeth.2011.46.38 ◽

2011 ◽

Vol 2011.46 (0) ◽

pp. 38-39

Author(s):

Yuichi SEKINE ◽

Hitoshi SOYAMA

Keyword(s):

Tool Steel ◽

Eddy Current ◽

Current Method ◽

Eddy Current Method ◽

Alloy Tool ◽

Modified Layer ◽

Surface Modified

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Tribological Properties of Duplex Layers Produced by Vacuum Titanizing Process Combined with the Electrolytic Deposition of Cobalt Alloy

Proceedings of the 8th International Scientific Conference "BALTTRIB 2015" ◽

10.15544/balttrib.2015.16 ◽

2015 ◽

Cited By ~ 1

Author(s):

E. Kasprzycka ◽

B. Bogdanski

Keyword(s):

Wear Resistance ◽

Corrosion Resistance ◽

Tool Steel ◽

Tribological Properties ◽

Steel Surface ◽

Electrolytic Deposition ◽

Cobalt Alloy ◽

Technological Processes ◽

Electrolytic Coating ◽

Steel Surfaces

A new technological processes combining a vacuum titanizing with a preliminary electrolytic deposition of Co-W alloy on the tool steel surface have been proposed to increase the corrosion resistance of carbide layers of TiC type. As a result, duplex layers of TiC+(Co-W) type on the steel surfaces have been obtained. It has been proved, that the wear resistance by friction of these duplex layers, produced by means vacuum titanizing of steel covered with electrolytic coating, is such good as the TiC carbide layers, produced on the steel surface without electrolytic coating, but their corrosion resistance is higher.

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PROPERTIES OF DUPLEX LAYERS PRODUCED IN A VACUUM CHROMIZING PROCESS ON STEEL COVERED WITH COBALT ALLOY

Tribologia ◽

10.5604/01.3001.0010.6595 ◽

2016 ◽

Vol 269 (5) ◽

pp. 63-72

Author(s):

Ewa KASPRZYCKA ◽

Bogdan BOGDAŃSKI

Keyword(s):

Wear Resistance ◽

Corrosion Resistance ◽

Tool Steel ◽

Diffusion Zone ◽

Steel Surface ◽

Structure And Properties ◽

Cobalt Alloy ◽

Depth Profiles ◽

Electrolytic Coating ◽

Concentration Depth Profiles

The paper presents the results of examinations of the structure and properties of duplex layers of the CrC+(Co-W) type, produced in a vacuum chromizing process on a tool steel surface covered with Co-W electrolytic alloy. A comparison of the CrC+(Co-W) type duplex layers with the CrC type single carbide layers, produced in vacuum chromizing process, were performed. Studies of layers thickness, their hardness, structure, and concentration depth profiles of elements in the diffusion zone of these layers were carried out. Tribological properties of the layers and corrosion resistance were determined. It has been proven that the wear resistance by friction of the CrC+(Co-W) type duplex layers, produced by means vacuum chromizing of tool steel covered with Co-W alloy electrolytic coating, is as good as single carbide layers of the CrC type, but their corrosion resistance is higher.

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CRUCIBLE CSM #2

Alloy Digest ◽

10.31399/asm.ad.ts0210 ◽

1968 ◽

Vol 17 (9) ◽

Keyword(s):

Physical Properties ◽

Tool Steel ◽

Die Casting ◽

Heat Treating ◽

Steel Company ◽

Heat Treated ◽

Alloy Tool ◽

Crucible Steel

Abstract Crucible CSM #2 is an alloy tool steel recommended for die casting dies and plastic molds. It is usually heat treated to two hardness levels, either 200 Brinell or 300 Brinell. CSM #2 machines readily and polishes easily at both hardness levels. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-210. Producer or source: Crucible Steel Company of America.

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SIMOCH

Alloy Digest ◽

10.31399/asm.ad.ts0186 ◽

1966 ◽

Vol 15 (12) ◽

Keyword(s):

Fracture Toughness ◽

Wear Resistance ◽

Impact Strength ◽

Cold Work ◽

Heat Treating ◽

High Impact ◽

High Shock ◽

Alloy Tool ◽

High Impact Strength ◽

Shock Resistance

Abstract SIMOCH is a low alloy tool steel having high shock resistance, high impact strength and excellent wear resistance. It is recommended for many hot work and cold work applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-186. Producer or source: Teledyne Vasco.

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COMPAX

Alloy Digest ◽

10.31399/asm.ad.ts0488 ◽

1988 ◽

Vol 37 (3) ◽

Keyword(s):

Wear Resistance ◽

Compressive Strength ◽

Physical Properties ◽

Surface Treatment ◽

Tool Steel ◽

Dimensional Stability ◽

Heat Treating ◽

High Toughness ◽

Steel Corporation

Abstract COMPAX is a chromium-molybdenum shock-resistant tool steel characterized by high toughness, good wear resistance, good through hardening and good dimensional stability during hardening. This datasheet provides information on composition, physical properties, hardness, elasticity, and compressive strength. It also includes information on heat treating, machining, joining, and surface treatment. Filing Code: TS-488. Producer or source: Uddeholm Steel Corporation.

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GRAPH-AIR

Alloy Digest ◽

10.31399/asm.ad.ts0075 ◽

1991 ◽

Vol 40 (6) ◽

Keyword(s):

Fracture Toughness ◽

Wear Resistance ◽

Compressive Strength ◽

Tensile Properties ◽

Tool Steel ◽

Heat Treating ◽

Steel Company

Abstract GRAPH-AIR is an air hardening, non-deforming tool steel with outstanding wear resistance and toughness. it contain uniformly distributed graphic particles for good machinability and non-seizing characteristics. This datasheet provides information on composition, hardness, tensile properties, and compressive strength as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-75. Producer or source: Latrobe Steel Company. Originally published October 1958, revised April 1984, June 1991.

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