scholarly journals The Behaviour of Graphitized Steels in Machining Processes

2016 ◽  
Vol 879 ◽  
pp. 1600-1605
Author(s):  
H. Roelofs ◽  
N. Renaudot ◽  
D. Smolenicki ◽  
J. Boos ◽  
F. Kuster
Keyword(s):  
Interface Temperature ◽  
Case Hardening ◽  
Low Carbon ◽  
Machining Processes ◽  
Working Zone ◽  
Test Methodology ◽  
Case Hardening Steel ◽  
Graphite Inclusions ◽  
Optimum Working

Graphitized steels are claimed to perform excellent in machining processes. They therefore can be considered as environmental friendly alternatives to the widely used Pb-alloyed steels. Due to liquid metal embrittlement and in-situ lubrication Pb improves machinability in a narrow tool-chip interface temperature window corresponding to low machining speeds. Although graphite inclusions are also supposed to generate in-situ lubrication, the mechanism and the corresponding optimum working zone is not very clear. The present work applies a new test methodology (including in-situ tribology, analysis of material flow and chip formation, optimum working zone analysis) to investigate the effects of graphite inclusions on turning and drilling operations. A Pb-alloyed low carbon free-cutting steel and Pb-alloyed case hardening steel were used as reference steels.

AISI 8615

Alloy Digest ◽  
1965 ◽  
Vol 14 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Alloy Steel ◽  
Heat Treating ◽  
Case Hardening ◽  
Low Carbon ◽  
Heavy Duty ◽  
Core Strength ◽  
Nickel Chromium ◽  
Steel Mills ◽  
Case Hardening Steel

Abstract AISI 8615 is a low-carbon, nickel-chromium-molybdenum alloy steel capable of producing high core strength and toughness. It is a case hardening steel recommended for heavy duty gears, cams, shafts, chains, fasteners, piston pins, etc. 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: SA-180. Producer or source: Alloy steel mills and foundries.

AISI 3120

Alloy Digest ◽  
1960 ◽  
Vol 9 (4) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
Case Hardening ◽  
Low Carbon ◽  
Steel Mills ◽  
Shock Resistance ◽  
Case Hardening Steel

Abstract AISI 3120 is a low-carbon, chromium-nickel case-hardening steel offering good toughness and shock resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-97. Producer or source: Alloy steel mills and foundries.

scholarly journals Carbon Particle In-Situ Alloying of the Case-Hardening Steel 16MnCr5 in Laser Powder Bed Fusion

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 896
Author(s):  
Matthias Schmitt ◽  
Albin Gottwalt ◽  
Jakob Winkler ◽  
Thomas Tobie ◽  
Georg Schlick ◽  
...  
Keyword(s):  
Laser Beam ◽  
Mechanical Strength ◽  
Carbon Content ◽  
Metal Powder ◽  
Case Hardening ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Carbon Particles ◽  
Case Hardening Steel

The carbon content of steel affects many of its essential properties, e.g., hardness and mechanical strength. In the powder bed fusion process of metals using a laser beam (PBF-LB/M), usually, pre-alloyed metal powder is solidified layer-by-layer using a laser beam to create parts. A reduction of the carbon content in steels is observed during this process. This study examines adding carbon particles to the metal powder and in situ alloying in the PBF-LB/M process as a countermeasure. Suitable carbon particles are selected and their effect on the particle size distribution and homogeneity of the mixtures is analysed. The workability in PBF-LB is then shown. This is followed by an evaluation of the resulting mechanical properties (hardness and mechanical strength) and microstructure in the as-built state and the state after heat treatment. Furthermore, potential use cases like multi-material or functionally graded parts are discussed.

AISI C1117

Alloy Digest ◽  
1960 ◽  
Vol 9 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
Case Hardening ◽  
Low Carbon ◽  
Steel Mills ◽  
Case Hardening Steel

Abstract AISI C1117 is a low-carbon free-machining case-hardening steel. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: CS-14. Producer or source: Carbon and alloy steel mills.

JALCASE No. 4

Alloy Digest ◽  
1956 ◽  
Vol 5 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Case Hardening ◽  
Low Carbon ◽  
Steel Corporation ◽  
Case Hardening Steel

Abstract JALCASE No. 4 is a low-carbon, free machining case-hardening steel, equivalent to AISI C-1117. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: CS-5. Producer or source: Jones & Laughlin Steel Corporation.

scholarly journals In situ Observation of Abnormal Grain Growth of Austenite in Case Hardening Steel

2020 ◽  
Vol 106 (12) ◽  
pp. 924-933
Author(s):  
Yuta Imanami ◽  
Takashi Iwamoto ◽  
Kimihiro Nishimura
Keyword(s):  
Grain Growth ◽  
Abnormal Grain Growth ◽  
Case Hardening ◽  
Case Hardening Steel

scholarly journals In-situ Observation of Abnormal Grain Growth of Austenite in Case Hardening Steel

2021 ◽  
Vol 61 (11) ◽  
pp. 2813-2821
Author(s):  
Yuta Imanami ◽  
Takashi Iwamoto ◽  
Kimihiro Nishimura
Keyword(s):  
Grain Growth ◽  
Abnormal Grain Growth ◽  
Case Hardening ◽  
Case Hardening Steel

AISI 4320

Alloy Digest ◽  
1959 ◽  
Vol 8 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Heat Treating ◽  
Case Hardening ◽  
High Toughness ◽  
Nickel Chromium ◽  
Steel Mills ◽  
Shock Resistance ◽  
Case Hardening Steel

Abstract AISI 4320 is a nickel-chromium-molybdenum case hardening steel having high toughness and shock resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-80. Producer or source: Alloy steel mills and foundries.

LUCEFIN GROUP 20NiCrMo2-2(1.6523), 20NiCrMoS2-2 (1.6526)

Alloy Digest ◽  
2020 ◽  
Vol 69 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Fatigue Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Medium Size ◽  
Case Hardening ◽  
Low Carbon ◽  
High Fatigue

Abstract Lucefin Group 20NiCrMo2-2 and 20NiCrMoS2-2 are low-carbon, Ni-Cr-Mo, alloy case-hardening steels that are used in the carburized or carbonitrided, and subsequently quench hardened and tempered, condition. These steels are, in general, used for medium-size case-hardened parts requiring high fatigue strength and wear resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and joining. Filing Code: SA-866. Producer or source: Lucefin S.p.A..

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