Based on thermodynamics and kinetics, precipitation behavior of microalloyed steels was analyzed. Deformation greatly promotes isothermal carbonitride precipitation and makes C-curve shift leftwards. The position and shape of C-curve also depend on the content of Nb and N. C-curve shifts leftwards a little when N content increases and the nose temperature is raised with increasing Nb content. Deformation shortened precipitation start time during continuous cooling, raised precipitation start temperature, accelerated precipitation kinetics of carbonitrides. With decreasing the finishing temperature and coiling temperature, the precipitates volume fraction increases and strength increment is raised during hot rolling. The simulated results are in agreementwith experiment results.
参考文献
| [1] | W J Liu;J J Jonas .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1988,19:1988. |
| [2] | W J Liu;J J Jonas .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1989,20:689. |
| [3] | O Shuji;H Tamotsu .[J].ISIJ International,1992,3:283. |
| [4] | M Prikryl;G C Weatherley;S V Subramanian .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1996,27:645. |
| [5] | A Yoshie;T Fujita;M Fujioka;K Okamoto, H Morikawa .[J].ISIJ International,1996,36(04):474. |
| [6] | B Dutta;C M Sellars .[J].Materials Science and Technology,1987,3:197. |
| [7] | A Satoshi;S Takehide;H Mitsuhiro .[J].ISIJ International,1992,3:275. |
| [8] | R C Sharma;V K Lakshmanant;J S Kirkaldy .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1984,3:545. |
| [9] | T Mori;M Tokizane;K Yamaguchi;E Sumani, Y Nakazima .[J].TETSU TO HAGANE-Journal OF THE IRON AND STEEL INSTITUTE OF JAPAN,1968,54:763. |
| [10] | H Ohtani;M hasebe;T Nishizawa .[J].Calphad-computer coupling of phase diagrams and thermochemistry,1989,13:187. |
| [11] | M Hillert;M Jarl .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1975,6:553. |
| [12] | S H Park;S Yue;J J Joans .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23:1641. |
| [13] | M Umemto;K Horiuchi;I Tamura .[J].Transactions of the Iron and Steel Institute of Japan,1982,22:854. |
| [14] | M Umemto;K Horiuchi;I Tamura .[J].Transactions of the Iron and Steel Institute of Japan,1983,23:690. |
| [15] | H Ohtsuka;M Umemoto;I Tamura .[J].TETSU TO HAGANE-Journal OF THE IRON AND STEEL INSTITUTE OF JAPAN,1987,73:144. |
| [16] | Jinbo QU .[D].沈阳:东北大学,1998. |
| [17] | C S Jnanmpa .[D].The University of Sheffield,1982. |
| [18] | S H Park;S Yue;J J Joans .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23:1641. |
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