Investigation of Micro-Hardness in Electrical Discharge Alloying of En31 Tool Steel with Cu–W Powder Metallurgy Electrode

2017 ◽  
Vol 43 (3) ◽  
pp. 1499-1510 ◽  
Author(s):  
Amoljit Singh Gill ◽  
Sanjeev Kumar
Keyword(s):  
Powder Metallurgy ◽  
Tool Steel ◽  
Electrical Discharge ◽  
Micro Hardness ◽  
Electrical Discharge Alloying

Micro-hardness evaluation for surface alloying of H11 die steel with Cu–Cr–Ni powder metallurgy tool in electrical discharge machining

2016 ◽  
Vol 232 (3) ◽  
pp. 438-450 ◽  
Author(s):  
Amoljit Singh Gill ◽  
Sanjeev Kumar
Keyword(s):  
Powder Metallurgy ◽  
Energy Dispersive Spectroscopy ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Energy Dispersive ◽  
Tool Electrode ◽  
Surface Alloying ◽  
Micro Hardness ◽  
X Ray Diffraction ◽  
X Ray

Electrical discharge machining is a non-conventional material removal process; recently, efforts have been made to use it as a surface alloying/modifying method. This study investigates and compares the micro-hardness of the surface machined by electrical discharge machining process using composite tool electrode (copper–chromium–nickel) manufactured by powder metallurgy and conventional copper tool. Design of experiment is used to find the best level of process parameters in order to achieve high micro-hardness. The machined surfaces are subsequently analyzed using different techniques like scanning electron microscopy, X-ray diffraction and energy-dispersive spectroscopy to ascertain the surface characteristics. Results indicate that the micro-hardness of the alloyed surface formed by powder metallurgy tool electrode is improved by 96.3% as compared to base material and 65.7% as compared to the surface machined by conventional copper electrode. Energy-dispersive spectroscopy of the surface machined using powder metallurgy electrode confirms significant material migration from tool and dielectric to the machined surface. The X-ray diffraction shows the formation of cementite (Fe3C), intermetallic compound of iron, chromium and nickel (FeCrNi) and chromium carbide (Cr7C3) on the surface machined using powder metallurgy electrode.

CARPENTER MICRO-MELT 10

Alloy Digest ◽  
1996 ◽  
Vol 45 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Tool Steel ◽  
Good Strength ◽  
Refined Microstructure ◽  
Strength And Toughness

Abstract Micro-Melt 10 is a high-vanadium tool steel A11 produced with a refined microstructure by powder metallurgy. The tool steel possesses superior wear resistance with good strength and toughness. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as forming and machining. Filing Code: TS-542. Producer or source: Carpenter.

YSS HAP72

Alloy Digest ◽  
2019 ◽  
Vol 68 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Powder Metallurgy ◽  
Tool Steel ◽  
High Speed ◽  
High Wear Resistance ◽  
Bend Strength ◽  
Temperature Performance ◽  
Very High

Abstract YSS HAP72 is a powder metallurgy high-speed tool steel with a very high wear resistance. This datasheet provides information on composition, hardness, and bend strength. It also includes information on high temperature performance. Filing Code: TS-779. Producer or source: Hitachi Metals America Ltd.

VANADIS 23

Alloy Digest ◽  
1998 ◽  
Vol 47 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tool Steel ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating

Abstract Vanadis 23 is a Cr-Mo-W-Va alloyed high-speed steel made by powder metallurgy. The tool steel offers an excellent combination of wear resistance and toughness. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on heat treating, machining, and surface treatment. Filing Code: TS-561. Producer or source: Uddeholm Corporation. See also Alloy Digest TS-552, March 1997.

VANADIS 4

Alloy Digest ◽  
1991 ◽  
Vol 40 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Tool Steel ◽  
High Performance ◽  
Cold Work ◽  
Heat Treating ◽  
Good Combination ◽  
Bend Strength ◽  
Cold Work Tool Steel

Abstract VANADIS 4 is a high performance cold work tool steel made by powder metallurgy. It offers an extremely good combination of resistance and toughness for high performance tools. This datasheet provides information on composition, physical properties, hardness, elasticity, and bend strength as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: TS-506. Producer or source: Uddeholm Corporation.

LESCO T-15 PM

Alloy Digest ◽  
1990 ◽  
Vol 39 (8) ◽  
Keyword(s):  
Powder Metallurgy ◽  
Physical Properties ◽  
Tool Steel ◽  
Abrasion Resistance ◽  
High Speed ◽  
Heat Treating ◽  
High Carbon ◽  
Steel Company ◽  
Good Retention ◽  
Hot Hardness

Abstract LESCOT-15 PM is a special purpose tungsten type high-speed tool steel containing cobalt for good retention of hot hardness and high carbon and vanadium for enhanced abrasion resistance. It is produced by powder metallurgy. This datasheet provides information on composition, physical properties, microstructure, hardness, and elasticity. It also includes information on heat treating and machining. Filing Code: TS-498. Producer or source: Latrobe Steel Company. Originally published August 1989, revised August 1990.

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