Investigation of structure dependence of diffusivity, solubility, and permeability of hydrogen in hot rolled low carbon steels

1990 ◽  
Vol 6 (4) ◽  
pp. 357-363 ◽  
Author(s):  
K. S. Forcey ◽  
I. Iordanova ◽  
D. K. Ross
Keyword(s):  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Structure Dependence ◽  
Hot Rolled

Relevance of ROT control for hot rolled low carbon steels

2001 ◽  
Vol 72 (5-6) ◽  
pp. 221-224 ◽  
Author(s):  
Madakasira Phaniraj ◽  
Shama Shamasundar ◽  
Ashok Kumar Lahiri
Keyword(s):  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Hot Rolled

scholarly journals Oriented Nucleation in Low-Carbon Steels

Texture ◽  
1974 ◽  
Vol 1 (3) ◽  
pp. 183-194 ◽  
Author(s):  
R. L. Every ◽  
M. Hatherly
Keyword(s):  
High Energy ◽  
Carbon Steels ◽  
Low Carbon ◽  
Line Broadening ◽  
Low Carbon Steels ◽  
X Ray ◽  
Cell Structures ◽  
Cold Rolled ◽  
Hot Rolled ◽  
Energy Components

The preferred orientations in hot-rolled, cold-rolled (70 % reduction), and annealed low-carbon steels (capped and aluminium-killed grades) have been investigated. Particular attention has been paid to the factors that control texture formation during annealing.The elastic energy stored in the cold-rolled steels is orientation dependent and the sequence, estimated from a Fourier analysis of X-ray line broadening, is V110>V111>V211>V100; the values range from 3.51 to 1.14 cal/g atom. The high energy components ({110}, {111}) have elongated cell structures but those of lower energy are equiaxed. In capped steels the high energy components recover and recrystallize most rapidly. In aluminium-killed steels both recovery and recrystallization are inhibited at low temperatures ≤ 500℃ and recrystallization begins first in the {111} components. It is shown that these effects are associated with precipitation and/or segregation of AlN during recovery. The recrystallization texture is determined primarily by oriented nucleation.

scholarly journals Effect of the Chemical Composition on the Structural State and Mechanical Properties of Complex Microalloyed Steels of the Ferritic Class

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 646 ◽  
Author(s):  
Alexander Zaitsev ◽  
Anton Koldaev ◽  
Nataliya Arutyunyan ◽  
Sergey Dunaev ◽  
Dmitrii D’yakonov
Keyword(s):  
Mechanical Properties ◽  
Structural State ◽  
Strength Properties ◽  
Carbon Steels ◽  
Microalloyed Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Transmission Electron ◽  
Ferrite Fraction ◽  
Hot Rolled

The most promising direction for obtaining a unique combination of difficult-to-combine properties of low-carbon steels is the formation of a dispersed ferrite microstructure and a volumetric system of nanoscale phase precipitates. This study was aimed at establishing the special features of the composition influence on the characteristics of the microstructure, phase precipitates, and mechanical properties of hot-rolled steels of the ferritic class. It was carried out by transmission electron microscopy and testing the mechanical properties of metal using 8 laboratory melts of low-carbon steels microalloyed by V, Nb, Ti, and Mo in various combinations. It was found that block ferrite prevails in the structure of steel cooled after hot rolling at a rate of 10–15 °C/s. Lowering of the microalloying components content leads to a decrease in the block ferrite fraction to 20–35% and the dominance of polygonal ferrite. The presence of nanoscale carbide (carbonitride) precipitates of austenitic and interphase/mixed types was detected in the rolled steels. It was established that the tendencies of changes in the characteristics of the structural state and present phase precipitates correlate well with obtained values of strength properties. The advantages of titanium-based microalloying systems in comparison with vanadium-based are shown.

Low-Carbon Steels

2015 ◽  
pp. 233-275
Keyword(s):  
High Strength ◽  
Carbon Steels ◽  
Interstitial Free ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Trip Steels ◽  
Hsla Steels ◽  
Twip Steels ◽  
Cold Rolled ◽  
Hot Rolled

This chapter discusses various alloying and processing approaches to increase the strength of low-carbon steels. It describes hot-rolled low-carbon steels, cold-rolled and annealed low-carbon steels, interstitial-free or ultra-low carbon steels, high-strength, low-alloy (HSLA) steels, dual-phase (DP) steels, transformation-induced plasticity (TRIP) steels, and martensitic low-carbon steels. It also discusses twinning-induced plasticity (TWIP) steels along with quenched and partitioned (Q&P) steels.

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