Paper Title:
Air-Cooled Mn-Series Bainitic Steel as 5Mn2SiNbTi of Grade YS 415 to 550MPa for Seamless Steel Pipe
  Abstract

The mechanical properties and microstructure of Mn-series bainitic steel as 5Mn2SiNbTi after air cooling and tempering have been investigated in this paper. The results show that the investigated steel show high strength (tensile strength up to 671MPa), low toughness (20J at -30°C) after hot rolling (final rolling at 1050°C) and air cooling. Medium temperature tempering can improve the toughness, without sacrificing strength of the steel. After tempering at 450°C for 1h, the steel obtained 632MPa tensile strength, 467MPa yield strength, 140J impact energy at -30°C, remaining 25.0% elongation. It is indicated that the tested steel can gain excellent combination of strength and toughness without precious alloy adding, control rolling and control cooling.

  Info
Periodical
Chapter
Chapter 3: Advanced Manufacturing Technology
Edited by
Jiuba Wen, Fuxiao Chen, Ye Han and Huixuan Zhang
Pages
471-474
DOI
10.4028/www.scientific.net/AMM.120.471
Citation
C. Feng, Z. X. Shen, Y. K. Zheng, "Air-Cooled Mn-Series Bainitic Steel as 5Mn2SiNbTi of Grade YS 415 to 550MPa for Seamless Steel Pipe", Applied Mechanics and Materials, Vol. 120, pp. 471-474, 2012
Online since
October 2011
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