Ultrasonic Transmission Characteristics of Continuous Casting Slab for Medium Carbon Steel

2005 ◽  
Vol 297-300 ◽  
pp. 2201-2206
Author(s):  
Jun Youn Lee ◽  
Soon Bok Lee ◽  
Jae Kyung Yi
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Surface Defects ◽  
Medium Carbon Steel ◽  
Carbon Steels ◽  
Ultrasonic Waves ◽  
Transmission Characteristics ◽  
Medium Carbon ◽  
Continuous Casting Slab ◽  
On Line

Until now, surface defects of continuous casting slab have been removed by the enforced surface scarfing to produce high quality steel materials. An evaluation technique for surface and internal defects of slab is required to enhance the production of medium carbon steels and acquire defect-map. Accordingly as a preliminary step, longitudinal wave testing and Rayleigh wave testing were carried out on slab specimens of medium carbon steel to get basic transmission characteristics of ultrasonic waves. This research provides as basic data for on-line defect estimation using a laser ultrasonic or EMAT in non-contact ultrasonic detecting techniques in future.

Influence of on-line tempering parameters on microstructure of medium-carbon steel

2017 ◽  
Vol 24 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Hua Zhang ◽  
Yan-xin Wu ◽  
Jian-xun Fu ◽  
Jie Xu ◽  
Qi-jie Zhai
Keyword(s):  
Carbon Steel ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
On Line

New Development and Application of Microalloyed Medium Carbon Steel for Auto Forging Products

2012 ◽  
Vol 706-709 ◽  
pp. 2842-2847 ◽  
Author(s):  
Ying Jian Zhang ◽  
Han Dong ◽  
Wei Jun Hui ◽  
Jun Peng
Keyword(s):  
Carbon Steel ◽  
New Technologies ◽  
Medium Carbon Steel ◽  
Carbon Steels ◽  
Connecting Rod ◽  
Medium Carbon ◽  
New Development ◽  
The Cost ◽  
Processing Properties ◽  
Quenching And Tempering

Microalloyed medium carbon steels have been applied for auto forging products at the aim of lower cost since 1980’s in China. Without quenching and tempering processes, the cost of heat treatment was greatly decreased, so they are widely applied in car forgings such as crankshaft, connecting rod. Recently, with the aim of improving performance and reducing production cost, new technologies, such as: reductions of microalloyed elements, tailored components, and mechanical properties forecast, have been developed in China auto industry. The designation, processing, properties prediction and microstructure of auto components have been controlled comprehensively. With the development of new technologies, microalloyed medium carbon steel gradually began to be applied to product important parts, and replace Quenching and Tempering steels. Both steel makers and end product users are expressed their desire to share benefits of technological innovation. The technologies will have a huge developing space and very bright developing prospects in motor parts industry in future.

Mechanical Properties of Plain Carbon Steels with Ultrafine (α+θ) Microstructures

2011 ◽  
Vol 682 ◽  
pp. 109-113
Author(s):  
Hai Yan Zhu ◽  
Long Fei Li ◽  
Wang Yue Yang ◽  
Zu Qing Sun
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Hot Deformation ◽  
Tensile Tests ◽  
Total Elongation ◽  
Medium Carbon Steel ◽  
Carbon Steels ◽  
Eutectoid Steel ◽  
Medium Carbon ◽  
Undercooled Austenite

Mechanical properties of a medium-carbon steel with the ultrafine (α+θ) microstructures obtained by hot deformation of undercooled austenite and annealing were investigated by tensile tests, in comparison with that of a eutectoid steel. The results indicated that in the case of hot deformation of undercooled austenite to strain of 1.61 at 650°C at 0.01s-1 and annealing at 650°C for 30min, the ultrafine (α+θ) microstructures consisting of ultrafine ferrite grains and dispersed cementite particles were similar in the medium-carbon steel and the eutectoid steel, but the mechanical properties of the eutectoid steel were better that maybe be attributed to the relatively coarser size and the higher amount of cementite particles. With the increase of temperature for hot deformation of undercooled austenite to 700°C, the ultrafine (α+θ) microstructure of the medium-carbon steel changed obviously with the presence of some spheroidized pearlite colonies, and demonstrated the best balance of strength and elongation, the yield strength of about 545MPa, the tensile strength of about 635MPa, and the total elongation of about 35%.

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

AISI 1025

Alloy Digest ◽  
1972 ◽  
Vol 21 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Carbon Steel ◽  
Physical Properties ◽  
Heat Treating ◽  
General Purpose ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Steel Mills ◽  
Cold Worked

Abstract AISI 1025 is a low-to-medium-carbon steel used in the hot-worked, cold-worked, normalized or water-quenched-and-tempered condition for general-purpose construction and engineering. It is also used for case-hardened components. 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, joining, and surface treatment. Filing Code: CS-47. Producer or source: Carbon and alloy steel mills.

AISI 1551

Alloy Digest ◽  
1980 ◽  
Vol 29 (2) ◽  
Keyword(s):  
Carbon Steel ◽  
Heat Treating ◽  
Medium Carbon Steel ◽  
High Manganese ◽  
Hand Tools ◽  
Medium Carbon ◽  
Steel Mills ◽  
Cold Worked ◽  
Hot Rolled ◽  
Good Workability

Abstract AISI 1551 is a medium-carbon steel containing relatively high manganese (0.85-1.15%) for a carbon steel. It can be used in the hot-rolled, annealed, normalized, cold-worked or liquid-quenched-and-tempered condition for numerous applications. It has a combination of good machinability and good workability. Its many uses include hand tools, machinery parts, springs and agricultural machinery. 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, joining, and surface treatment. Filing Code: CS-80. Producer or source: Carbon steel mills.

SAE 1037

Alloy Digest ◽  
1979 ◽  
Vol 28 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Carbon Steel ◽  
Low Cost ◽  
Heat Treating ◽  
General Purpose ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Steel Mills ◽  
Medium Strength ◽  
Hot Rolled

Abstract SAE 1037 is a carbon steel that provides medium strength and medium toughness at low cost. It is used in the hot-rolled, normalized, oil-quenched-and-tempered and water-quenched-and-tempered conditions. This medium-carbon steel is used for construction and for general-purpose engineering. 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, joining, and surface treatment. Filing Code: CS-76. Producer or source: Carbon steel mills.

SAE 1026

Alloy Digest ◽  
1976 ◽  
Vol 25 (6) ◽  
Keyword(s):  
Fracture Toughness ◽  
Carbon Steel ◽  
Heat Treating ◽  
Medium Carbon Steel ◽  
High Manganese ◽  
Medium Carbon ◽  
The Core ◽  
Steel Mills ◽  
Cold Worked ◽  
Good Workability

Abstract SAE 1026 is a low-to-medium-carbon steel used in the annealed, hot-worked, normalized, cold-worked or water-quenched-and-tempered condition for a variety of engineering and construction applications. It combines good workability (hot or cold), good machinability and good weldability. It has relatively high manganese (0.60-0.90%); this provides increased hardenability which is reflected in all uses and gives somewhat increased hardness and strength in the core of carburized parts and in uncarburized applications. 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, joining, and surface treatment. Filing Code: CS-60. Producer or source: Carbon steel mills.

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