Paper Title:
Effect of Boron or Cuprum on Phase Transition and Mechanical Properties of High-Strength Steels for Oil Tank
  Abstract

Two kinds of oil tank steels were fabricated by added B(B-steel) and Cu(Cu-steel) , and their microstructures, tensile and Charpy impact properties, undercooled austenite transformation were investigated. In this work,0.0016%B can improve hardenability distinctly. The B-steel was mainly composed of bainite at the cooling rate of 3°Cs-1, but the Cu-steel completely consisted of bainite when the cooling rate exceed 20°Cs-1. The steels manufactured by thermo-mechanical controlled process , test results indicated that the B-steel had the higher yield and tensile strength than the Cu-steel ,because their volume fractions and morphologies of bainite. The Cu-steel had the higher impact energy than the B-steel because of their higher effective grain size. Majority of the precipitation particles which were compounded of Nb and Ti existed as(Nbx,Ti(1-x)) (CyN(1-y)).

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
1063-1066
DOI
10.4028/www.scientific.net/AMR.233-235.1063
Citation
L. Qi, A. M. Zhao, Z. Z. Zhao, "Effect of Boron or Cuprum on Phase Transition and Mechanical Properties of High-Strength Steels for Oil Tank", Advanced Materials Research, Vols. 233-235, pp. 1063-1066, 2011
Online since
May 2011
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$32.00
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