The different roles of reversed austenite, athermal martensite and tempered martensite on low-temperature toughness in ultra-low carbon medium Mn steel

2021 ◽  
pp. 129958
Author(s):  
Danqi Zhang ◽  
Gang Liu ◽  
Xinjun Sun
Keyword(s):  
Low Temperature ◽  
Low Carbon ◽  
Reversed Austenite ◽  
Tempered Martensite ◽  
Medium Mn Steel ◽  
Low Temperature Toughness ◽  
Mn Steel

On the intercritical annealing parameters and ensuing mechanical properties of low-carbon medium-Mn steel

2018 ◽  
Vol 733 ◽  
pp. 246-256 ◽  
Author(s):  
G.K. Bansal ◽  
D.A. Madhukar ◽  
A.K. Chandan ◽  
Ashok K. ◽  
G.K. Mandal ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intercritical Annealing ◽  
Low Carbon ◽  
Medium Mn Steel ◽  
Mn Steel

AISI 4815

Alloy Digest ◽  
1971 ◽  
Vol 20 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Low Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Good Combination ◽  
Low Carbon ◽  
Steel Mills ◽  
Temperature Performance ◽  
Low Temperature Toughness

Abstract AISI 4815 is a low-carbon, nickel-molybdenum carburizing steel. It is recommended for applications requiring a strong, tough core combined with a highly wear-resistant carburized case. It also offers a good combination of strength and low-temperature toughness for non-carburizing applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-259. Producer or source: Alloy steel mills and foundries.

SAE 4820

Alloy Digest ◽  
1985 ◽  
Vol 34 (6) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Low Temperature ◽  
Heat Treating ◽  
Good Combination ◽  
Low Carbon ◽  
Heavy Duty ◽  
Steel Mills ◽  
Wide Range ◽  
Low Temperature Toughness

Abstract SAE 4820 is a low-carbon (nominally 0.20%) carburizing steel containing nominally 3.5% nickel and 0.25% molybdenum. It is deal for used that require a strong, tough core along with a highly wear-resistant carburized case. In addition, it offers a good combination of strength and low-temperature toughness for non-carburized applications. It is recommended for a wide range of moderately heavy-duty applications. Among its many uses are carburized gears, carburized aerospace components and non-carburized machinery parts. 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-409. Producer or source: Alloy steel mills and foundries.

Fine structure of low-carbon steel after electrolytic plasma treatment

2021 ◽  
Vol 63 (9) ◽  
pp. 842-847
Author(s):  
Lyaila Bayatanova ◽  
Bauyrzhan Rakhadilov ◽  
Sherzod Kurbanbekov ◽  
Мazhyn Skakov ◽  
Natalya Popova
Keyword(s):  
Carbon Steel ◽  
Low Temperature ◽  
Transition Layer ◽  
Low Carbon Steel ◽  
Residual Austenite ◽  
Low Carbon ◽  
Tempered Martensite ◽  
Quantitative Estimates ◽  
Steel Layer ◽  
Lamellar Cementite

Abstract This work shows the results of research of the fine and dislocation structure of the transition layer of 18CrNi3Mo low-carbon steel after the influence of electrolytic plasma. Conducted research has shown that the modified steel layer, as a result of carbonitriding, was multiphase. Quantitative estimates were made for carbonitride М23(С,N)6 in various morphological components of α-martensite and on average by material in the transition layer of nitro-cemented steel. It was established that α-phase is tempered martensite after nitrocementation. Released martensite is represented by batch, or lath and lamellar low-temperature and high-temperature martensite. Inside the tempered martensitic crystals, lamellar cementite precipitates are simultaneously present, and residual austenite is found along the boundaries of the martensitic rails and plates of low-temperature martensite. It was determined that inside the crystals of all morphological components of α-martensite there are particles of carbonitride М23(С,N)6.

AISI 4820

Alloy Digest ◽  
1974 ◽  
Vol 23 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Good Combination ◽  
Low Carbon ◽  
Steel Mills ◽  
Low Temperature Toughness

Abstract AISI 4820 is a low-carbon carburizing steel containing nominally 3.5% nickel and 0.25% molybdenum. It is ideal for uses that require a strong, tough core along with a highly wear-resistant carburized case. In addition, it offers a good combination of strength and low-temperature toughness for non-carburized 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, and joining. Filing Code: SA-311. Producer or source: Alloy steel mills and foundries.

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