Effect of EAM Pulsed Current on 1450 MPA Martensitic Steel

2014 ◽  
Author(s):  
Megan A. Lobdell ◽  
John T. Roth ◽  
Chetan P. Nikhare ◽  
Dennie Parsons ◽  
Dae-Ho Yang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Electric Current ◽  
Martensitic Steel ◽  
Heat Treating ◽  
Pulsed Current ◽  
High Tensile Strength ◽  
Pulse Period ◽  
Lower Strength ◽  
Pulsed Electric Current ◽  
Current Duration

Martensitic steel is often used to fabricate parts that require high tensile strength. However, this quality, and the material’s low ductility, requires manufacturing equipment with higher tonnage capacity. This paper explores a potential way to reduce the tonnage requirement by temporarily reducing the steel’s required flow stress. Previous studies with other metals have shown that using a pulsed electric current will provide lower strength, as well as, an increase in ductility, without the sensitivity to temperature that heat treating has. This project investigates how martensitic steel reacts to pulsing electric current in terms of the tensile strength and elongation. The project consists of two studies. First, where the parameters considered were current density (CD), pulse duration (PD), pulse period (PP), and pressurized air (PA). Second is a series of tests where current duration was based off the material’s strength. The results from the first study show that the electricity can increase the material’s achievable elongation; the second study achieved reducing and limiting the material’s strength.

LUCEFIN GROUP C30 (1.0528), C30E (1.1178), C30R (1.1179)

Alloy Digest ◽  
2020 ◽  
Vol 69 (9) ◽  
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Medium Carbon ◽  
Alloy Steels ◽  
Cold Worked ◽  
Lower Carbon

Abstract Lucefin Group C30, C30E, and C30R are medium-carbon, non-alloy steels that are used in the normalized, cold worked, or quenched and tempered condition. C30E and C30R may also be flame or induction hardened. C30, C30E, and C30R are widely used for small, moderately stressed parts, where higher strength levels are needed than can be achieved in the lower carbon grades, and also where toughness is more important than high tensile strength. 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: CS-206. Producer or source: Lucefin S.p.A.

ISO 185/JL/225

Alloy Digest ◽  
2020 ◽  
Vol 69 (9) ◽  
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Heat Treating ◽  
International Organization ◽  
Gray Cast ◽  
Damping Capacity ◽  
Lower Strength ◽  
Test Pieces ◽  
Lower Carbon

Abstract ISO 185/JL/225 is an intermediate-tensile-strength gray cast iron that has a predominantly pearlitic matrix, and a tensile strength of 225–325 MPa (33-47 ksi), when determined on test pieces machined from separately cast, 30 mm (1.2 in.) diameter test bars. Compared with the lower strength gray cast iron grades, ISO 185/JL/225 contains lower carbon and silicon contents, while still maintaining excellent thermal conductivity, damping capacity, and machinability. This datasheet provides information on composition, physical properties, tensile properties, and compressive strength as well as fatigue. It also includes information on heat treating. Filing Code: CI-73. Producer or source: International Organization for Standardization (ISO).

VASCO 9-4-20

Alloy Digest ◽  
1997 ◽  
Vol 46 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Ultimate Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Temperature Performance

Abstract Vasco 9-4-20 (0.20 wt% C) is a premium quality aircraft steel that combines high tensile strength with good fracture toughness. It is a heat-treatable alloy capable of developing an ultimate tensile strength greater than 190 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-489. Producer or source: Vasco, An Allegheny Teledyne Company.

NJZ ALLOY No. 55

Alloy Digest ◽  
1976 ◽  
Vol 25 (12) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
New Jersey ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
High Stiffness ◽  
Zinc Cadmium ◽  
Forming Characteristics

Abstract NJZ Alloy No. 55 is a zinc-cadmium alloy characterized by high tensile strength and hardness but low ductility. It has high stiffness and resiliency but low drawing and forming characteristics. Its applications include hardware and medallions. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Zn-30. Producer or source: New Jersey Zinc Company.

ISO 185/JL/275

Alloy Digest ◽  
2021 ◽  
Vol 70 (3) ◽  
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
Gray Cast Iron ◽  
Heat Treating ◽  
Gray Cast ◽  
Damping Capacity ◽  
Wear Properties ◽  
Lower Strength ◽  
Test Pieces ◽  
Lower Carbon

Abstract ISO 185/JL/275 is an intermediate-tensile-strength gray cast iron that has a pearlitic matrix and a tensile strength of 275–375 MPa (40–54 ksi), when determined on test pieces machined from separately cast, 30 mm (1.2 in.) diameter test bars. Compared with the lower strength gray cast iron grades, ISO 185/JL/275 contains lower carbon and silicon contents, while still maintaining good thermal conductivity and damping capacity. Owing to its higher tensile strength and hardness, it exhibits superior wear properties. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on casting and heat treating. Filing Code: CI-79. Producer or source: International Organization for Standardization.

Effect of Pulsed Current on the Microstructure and Distribution of C and Mn in an Fe-0.5C-1.5Mn Alloy

2010 ◽  
Vol 146-147 ◽  
pp. 1612-1616
Author(s):  
Hai Chuan Wang ◽  
Peng Hong ◽  
Zhi You Liao ◽  
Xin Li ◽  
Jie Lie ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Current ◽  
Pulsed Electric Field ◽  
Pulsed Current ◽  
Banded Structure ◽  
Electric Treatment ◽  
Pulsed Electric Current ◽  
Acicular Structure ◽  
Pulsed Voltage

A pulsed electric current (19 kHz, 0-8 volts) has been applied to a molten Fe-0.5C-1.5Mn alloy to investigate its effect on the microstructure and the distribution of carbon and manganese. It has been shown that the pulsed electric field can improve the microstructure from a coarse banded structure to a compact acicular structure by increasing the pulsed voltage from 4 volts to 8 volts. The pulsed electric treatment also has an effect on the C and Mn distribution with a tendency for C and Mn to migrate to the cathode.

scholarly journals Welding of DOCOL 1200M using micro-jet cooling

2020 ◽  
Vol 92 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Abilio Silva ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Adam Jurek
Keyword(s):  
Tensile Strength ◽  
Welded Joint ◽  
High Strength ◽  
High Tensile Strength ◽  
Lower Strength ◽  
Plastic Properties ◽  
Supporting Structure ◽  
Jet Cooling

In welding elements of the supporting structure of the means of transport, attention is paid to the high strength and good plastic properties of the welded joint. In the construction of transport means, DOCOL 1200M  steel from the AHSS group is increasingly used due to their high tensile strength of steel at the level of 1200 MPa. The welds have much lower strength than the native material. In this paper, it was decided to check the weldability of  DOCOL 1200M steel with the use of micro-jet cooling

CMW 73

Alloy Digest ◽  
2000 ◽  
Vol 49 (11) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Copper Base ◽  
Copper Base Alloy

Abstract CMW 73 is a heat treatable copper-base alloy having high tensile strength and hardness coupled with fair electrical and thermal conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: CU-129. Producer or source: CMW Inc. Originally published as Mallory 73, June 1963, revised November 2000.

REVERE No. 454

Alloy Digest ◽  
1962 ◽  
Vol 11 (12) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Good Corrosion Resistance

Abstract REVERE No. 454 is a manganese bronze having high tensile strength and good corrosion 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: Cu-123. Producer or source: Revere Copper and Brass Inc..

ZEPHOR BRONZE

Alloy Digest ◽  
1966 ◽  
Vol 15 (1) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Elastic Limit ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Good Resistance ◽  
Corrosion Resistant ◽  
Rolling Mills

Abstract ZEPHOR BRONZE is a 5% tin-phosphor bronze possessing high tensile strength, high elastic limit, good resistance to fatigue and corrosion. It is recommended for strong, corrosion resistant diaphrams, springs, and fasteners. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-160. Producer or source: Bridgeport Rolling Mills Company.

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