在DIL 805A膨胀仪上测定了Nb微合金化1000 MPa级冷轧双相钢连续加热及两相区保温过程中的热膨胀曲线,根据杠杆定律计算的奥氏体体积分数与定量金相测量值符合较好.740、770和800℃保温100 s的过程中,奥氏体的等温相变动力学曲线明显分为两个阶段,两个阶段可分别由JMAK方程描述.第Ⅰ阶段时间指数较大,奥氏体体积分数增长较快,奥氏体长大由C的扩散控制；第Ⅱ阶段时间指数降低,奥氏体体积分数的增长明显变慢,奥氏体长大转变为由Mn的扩散控制.在较低的保温温度下,奥氏体长大可以更快的由C扩散控制转变为由Mn扩散控制.
参考文献
| [1] | 顾海麟,羊军,史刚,王武荣,韦习成.先进高强度钢板车身应用现状及成形性能初探[C].中国汽车工程学会汽车材料分会第17届学术年会论文集,2010:93-99. |
| [2] | 康永林.现代汽车板工艺及成形理论与技术[M].北京:冶金工业出版社,2009 |
| [3] | 李麟,史文.先进高强度汽车钢板产业化的历程[J].上海金属,2010(04):60-61. |
| [4] | 韩会全,霍刚,崔席勇,刘彦春,王国栋,刘相华.600 MPa级冷轧连续退火双相钢临界区加热温度研究[J].金属热处理,2009(06):76-80. |
| [5] | 景财年,刘在学,王作成,王明刚,金成俊.临界区退火处理对0.15C-1.5Mn-1.5Al冷轧TRIP钢相变和力学性能的影响[J].北京科技大学学报,2008(06):610-614. |
| [6] | 黄群飞,何燕霖,罗娟娟,史文,李麟.马氏体体积分数对双相钢变形行为的影响[J].钢铁,2009(04):60-63. |
| [7] | Speich G R;Demarest V A;Miller R L .Formation of austenite during intercritical annealing of dual-phase steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1981,12:1419-1428. |
| [8] | Yi J J;Kim I S;Choi H S .Austenitization during intercritical annealing of an Fe-C-Si-Mn dual-phase steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1985,16(07):1237-1245. |
| [9] | Datta D P;Gokhale A M .Austenitization kinetics of pearlite and ferrite aggregates in a low carbon steel containing 0.15 wt pct C[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1981,12(03):443-450. |
| [10] | 雷廷权;潘杰 .低碳低合金钢临界区奥氏体化动力学的研究[J].金属学报,1985,21(05):348-358. |
| [11] | 周向阳;曹凤豫;李承基 .Fe-C-Mn双相钢奥氏体形成动力学[J].北京科技大学学报,1989,11(05):419-425. |
| [12] | Chang-Seok Oh;Heung Nam Han;Chang Gil Lee .Dilatometric Analysis on Phase Transformations of Intercritical Annealing of Fe-Mn-Si and Fe-Mn-Si-Cu Low Carbon TRIP Steels[J].Metals and Materials International,2004(5):399-406. |
| [13] | J. HUANG;W.J. POOLE;M. MILITZER .Austenite Formation during Intercritical Annealing[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(11):3363-3375. |
| [14] | Kop TA.;Van der Zwaag S.;Sietsma J. .Dilatometric analysis of phase transformations in hypo-eutectoid steels[J].Journal of Materials Science,2001(2):519-526. |
| [15] | J. MAHIEU;J. MAKI;B.C. De COOMAN .Phase Transformation and Mechanical Properties of Si-Free CMnAl Transformation-Induced Plasticity-Aided Steel[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2002(8):2573-2580. |
| [16] | Chupatanakul S;Nash P .Dilatometric measurement of carbon enrichment in austenite during bainite transformation[J].Journal of Materials Science,2006,41(15):4965-4969. |
| [17] | 刘庄;吴肇基;吴景之.热处理过程的数值模拟[M].北京:科学出版社,1996 |
| [18] | J. F. Caseiro;J. A. Oliveira;A. Andrade-Campos .Thermomechanical modelling strategies for multiphase steels[J].International Journal of Mechanical Sciences,2011(9):720-733. |
| [19] | 雍岐龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006 |
| [20] | Peranio, N.;Li, Y.J.;Roters, F.;Raabe, D. .Microstructure and texture evolution in dual-phase steels: Competition between recovery, recrystallization, and phase transformation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(16/17):4161-4168. |
| [21] | Roumen PETROV;Leo KESTENS;Yvan HOUBAERT .Recrystallization of a Cold Rolled Trip-assisted Steel during Reheating for Intercritical Annealling[J].ISIJ International,2001(8):883-890. |
| [22] | Yang D Z;Brown E L;Matlock D K et al.Ferrite recrystallization and austenite formation in cold-rolled intercritically annealed steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1985,16(08):1385-1392. |
| [23] | 雍岐龙;李永福;赵昆渝 .形核长大机制与恒温相变动力学时间指数[J].云南工学院学报,1990,6(03):1-8. |
| [24] | 邝霜,康永林,于浩,齐秀美,刘仁东.Fe-C-Mn系冷轧双相钢两相区奥氏体化过程模拟[J].北京科技大学学报,2008(08):858-863. |
| [25] | Garcia C I;Deardo A J .Formation of austenite in 1.5 pct Mn steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1981,12(03):521-530. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%