Jian Zhou, Yonglin Kang,  and Xinping Mao, Precipitation characteristic of high strength steels microalloyed with titanium produced by compact strip production, J. Univ. Sci. Technol. Beijing, 15(2008), No. 4, pp. 389-395. https://doi.org/10.1016/S1005-8850(08)60074-2
Cite this article as:
Jian Zhou, Yonglin Kang,  and Xinping Mao, Precipitation characteristic of high strength steels microalloyed with titanium produced by compact strip production, J. Univ. Sci. Technol. Beijing, 15(2008), No. 4, pp. 389-395. https://doi.org/10.1016/S1005-8850(08)60074-2
Materials

Precipitation characteristic of high strength steels microalloyed with titanium produced by compact strip production

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  • Corresponding author:

    Jian Zhou    E-mail: naivem@126.com

  • Received: 5 May 2007
  • Transmission electron microscopy (TEM) and physics-chemical phase analysis were employed to investigate the precipitates in high strength steels microalloyed with Ti produced by compact strip production (CSP). It was seen that precipitates in Ti microalloyed steels mainly included TiN, Ti4C2S2, and TiC. The size of TiN particles varied from 50 to 500 nm, and they could precipitate during or before soaking. The Ti4C2S2 with the size of 40-100 nm might precipitate before rolling, and the TiC particles with the size of 5-50 nm precipitated heterogeneously. High Ti content would lead to the presence of bigger TiC particles that precipitated in austenite, and by contrast, TiC particles that precipitated in ferrite and the transformation of austenite to ferrite was smaller. They were less than 30 nm and mainly responsible for precipitate strengthening. It should be noted that the TiC particles in higher Ti content were generally smaller than those in the steel with a lower Ti content.
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