The effects of thermo-mechanical control process on microstructures and mechanical properties of a commercial pipeline steel

2002 ◽  
Vol 335 (1-2) ◽  
pp. 14-20 ◽  
Author(s):  
Ming-Chun Zhao ◽  
Ke Yang ◽  
Yiying Shan
Keyword(s):  
Mechanical Properties ◽  
Pipeline Steel ◽  
Control Process ◽  
Mechanical Control ◽  
Microstructures And Mechanical Properties

scholarly journals Effect of Tempering Temperature after Thermo-Mechanical Control Process on Microstructure Characteristics and Hydrogen-Induced Ductility Loss in High-Vanadium X80 Pipeline Steel

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2839
Author(s):  
Longfei Li ◽  
Bo Song ◽  
Biwen Yang ◽  
Lei Wang ◽  
Wensen Cheng
Keyword(s):  
Hydrogen Diffusion ◽  
Pipeline Steel ◽  
Control Process ◽  
Granular Bainite ◽  
X80 Pipeline Steel ◽  
Tempering Temperature ◽  
Mechanical Control ◽  
Ductility Loss ◽  
Vanadium Carbides ◽  
20 Nm

In this study, an optimum tempering temperature after a thermo-mechanical control process (TMCP) was proposed to improve the hydrogen-induced ductility loss of high-vanadium X80 pipeline steel. The results showed that with increasing tempering temperature from 450 to 650 °C, the size and quantity of granular bainite decreased but the spacing of deformed lath ferrite and the fraction of massive ferrite increased. The number of fine vanadium carbides increased as well. However, as the tempering temperature increased to 700 °C, the microstructure of T700 steel completely converted to massive ferrite and the grain size became larger. Additionally, the amount of nanoscale precipitates decreased again, and the mean size of precipitates evidently increased in T700 steel. The steel tempering at 650 °C, containing the most vanadium precipitates with a size less than 20 nm, had the lowest hydrogen diffusion coefficient and the best resistance to hydrogen-induced ductility loss.

scholarly journals Modelling of Microstructural Evolution and Mechanical Properties of Steel Plates Produced by Thermo-Mechanical Control Process.

1992 ◽  
Vol 32 (3) ◽  
pp. 395-404 ◽  
Author(s):  
Atsuhiko Yoshie ◽  
Masaaki Fujioka ◽  
Yoshiyuki Watanabe ◽  
Kiyoshi Nishioka ◽  
Hirofumi Morikawa
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Control Process ◽  
Steel Plates ◽  
Mechanical Control

Effect of TMCP Parameters on the Microstructure and Properties of the API X60 Pipeline Steels

2011 ◽  
Vol 391-392 ◽  
pp. 437-441
Author(s):  
Wen Ning Mu ◽  
Shuang Zhi Shi
Keyword(s):  
Mechanical Properties ◽  
Control Process ◽  
Polygonal Ferrite ◽  
Experimental Results ◽  
Technological Parameters ◽  
Pipeline Steels ◽  
Mechanical Control ◽  
Microstructure And Properties ◽  
Mixed Microstructure ◽  
Strength And Ductility

Effects of technological parameters of thermo mechanical control process (TMCP) on microstructure and mechanical properties of the API X60 pipeline steels have been investigated. The parameters of TMCP for obtaining better mechanical properties are given. The experimental results show that the mixed microstructure mostly composed of polygonal ferrite, pearlite/bainite and martensite-austenite constituent (M-A) has the optimum strength and ductility.

scholarly journals Effect of Thermo-Mechanical Control Process on Mechanical Properties of 9Cr-1Mo-V-Nb Steel

1990 ◽  
Vol 76 (7) ◽  
pp. 1108-1115 ◽  
Author(s):  
Akihiro MATSUZAKI ◽  
Yoshiyuki SAITO ◽  
Osamu WATANABE ◽  
Chiaki SHIGA ◽  
Ichiro NAKAGAWA
Keyword(s):  
Mechanical Properties ◽  
Control Process ◽  
Mechanical Control
Sign in / Sign up

Export Citation Format

Share Document