The role of nanoscale strain-induced defects in the sharp increase of low-temperature toughness in low-carbon and low-alloy steels

AbstractIntragranular ferrite (IGF), which nucleates from specific inclusion surfaces in low alloy steels, is the desired microstructure to improve mechanical properties of steel such as the toughness. This microstructure is especially important in the coarse grain heat affected zone (CGHAZ) of weldments. The latest review paper focusing on the role of non-metallic inclusions in the IGF formation in steels has been reported by Sarma et al. in 2009 (ISIJ int., 49(2009), 1063–1074). In recent years, large amount of papers have been presented to investigate different issues of this topic. This paper mainly highlights the frontiers of experimental and theoretical investigations on the effects of inclusion characteristics, such as the composition, size distribution and number density, on the IGF formation in low carbon low-alloyed steels, undertaken by the group of Applied Process Metallurgy, KTH Royal Institute of Technology. Related results reported in previous studies are also introduced. Also, plausible future work regarding various items of IGF formation is mentioned in each section. This work aims to give a better control of improving the steel quality during casting and in the heat affected zone (HAZ) of weldment, according to the concept of oxide metallurgy.

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Nanoscale Mesoscopic Structural States in Low-Alloy Steels for Martensitic Phase Formation and Low-Temperature Toughness Enhancement

Physical Mesomechanics ◽

10.1134/s1029959920050021 ◽

2020 ◽

Vol 23 (5) ◽

pp. 376-383 ◽

Cited By ~ 1

Author(s):

V. E. Panin ◽

I. A. Shulepov ◽

L. S. Derevyagina ◽

S. V. Panin ◽

A. I. Gordienko ◽

...

Keyword(s):

Low Temperature ◽

Phase Formation ◽

Martensitic Phase ◽

Low Alloy Steels ◽

Alloy Steels ◽

Low Temperature Toughness ◽

Toughness Enhancement

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The role of reverse temper embrittlement on some low and high temperature crack extension processes in low carbon, low alloy steels: A review

International Journal of Pressure Vessels and Piping ◽

10.1016/0308-0161(92)90121-u ◽

1992 ◽

Vol 49 (3) ◽

pp. 339-386 ◽

Cited By ~ 11

Author(s):

J.J. Hickey ◽

J.H. Bulloch

Keyword(s):

High Temperature ◽

Crack Extension ◽

Temper Embrittlement ◽

Low Alloy Steels ◽

Low Carbon ◽

Alloy Steels ◽

Temperature Crack

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Understanding the Role of Copper Addition in Low-Temperature Toughness of Low-Carbon, High-Strength Steel

Metallurgical and Materials Transactions A ◽

10.1007/s11661-019-05462-z ◽

2019 ◽

Vol 50 (12) ◽

pp. 5627-5639 ◽

Cited By ~ 4

Author(s):

Xiaohui Xi ◽

Jinliang Wang ◽

Liqing Chen ◽

Zhaodong Wang

Keyword(s):

Low Temperature ◽

High Strength Steel ◽

High Strength ◽

Low Carbon ◽

Copper Addition ◽

Low Temperature Toughness

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TRI-MARK TM-811N2

Alloy Digest ◽

10.31399/asm.ad.sa0389 ◽

1983 ◽

Vol 32 (4) ◽

Keyword(s):

Low Temperature ◽

High Strength ◽

Heat Treating ◽

Low Alloy Steels ◽

Nickel Steel ◽

Fine Grained ◽

Subzero Temperatures ◽

Steel Weld Metal ◽

Alloy Steels ◽

Welding Electrode

Abstract TRI-MARK TM-811N2 is a flux-cored welding electrode for all position semiautomatic arc welding. It is designed to weld 2-3% nickel steels for applications requiring good toughness at subzero temperatures; in addition, it is used to weld various other high-strength low-alloy steels and various fine-grained steels with low-temperature toughness. Tri-Mark TM-811N2 is used to deposit typically 2.35% nickel steel weld metal with good low-temperature impact properties. It is used for shipbuilding, oil rigs and similar structures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: SA-389. Producer or source: Tri-Mark Inc..

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