scholarly journals Transient Evolution of Inclusions during Calcium Modification in Linepipe Steels

2014 ◽  
Vol 54 (12) ◽  
pp. 2772-2779 ◽  
Author(s):  
Ying Ren ◽  
Lifeng Zhang ◽  
Shusen Li
Keyword(s):  
Linepipe Steels ◽  
Calcium Modification

Microstructural Control in Thick-Walled Nb-Ti-V Microalloyed Linepipe Steels

2004 ◽  
Vol 467-470 ◽  
pp. 223-228
Author(s):  
K.M. Banks
Keyword(s):  
Grain Size ◽  
Laboratory Simulation ◽  
Microalloyed Steels ◽  
Processing Parameter ◽  
Strip Rolling ◽  
Bearing Steels ◽  
Simulation Results ◽  
Linepipe Steels ◽  
Ferrite Grain Size ◽  
Microstructural Control

Various microstructure models for Nb-bearing steels were tested under industrial strip rolling conditions to establish a relationship between grain size and toughness in Ti-Nb-V microalloyed steels. For similar Nb contents, microstructure models for Nb steels were found to adequately describe recrystallisation kinetics in more complex Ti-Nb-V steels. For thick-walled linepipe (11.6mm), a minimum of 0.04%Nb is required to achieve adequate toughness. Retained strain was the dominant processing parameter factor affecting ferrite grain size. The predicted minimum amount of retained strain after the last pass required for sufficient grain refinement concurred with laboratory simulation results. For the rolling schedules investigated, metadynamic recrystallisation was predicted to occur during roughing, whilst static recrystallisation was predominant during finishing.

Modification of inclusions in linepipe steels by Ca-containing ferrosilicon during ladle refining

2018 ◽  
Vol 47 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Ming Li ◽  
Shusen Li ◽  
Ying Ren ◽  
Wen Yang ◽  
Lifeng Zhang
Keyword(s):  
Ladle Refining ◽  
Linepipe Steels
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