研究了快速加热连续退火工艺对V微合金化低Si含P系TRIP钢显微组织特征与力学性能的影响.结果表明,快速连续退火过程中,随着退火温度的升高,拉伸强度增加明显,然而为了保证其综合性能,并不能一味地提高其临界退火温度.加热速率80℃/s,退火温度为880℃时,残余奥氏体形态不仅仅局限于细小的块状结构；而且在贝氏体铁素体板条间能观察到大量的薄膜状残余奥氏体.细小、弥散的V(C,N))分布于铁素体或贝氏体基体中,大部分析出粒子直径在4-9 nm之间,实验钢具有优异的强度与塑性配合:Rm=1010 MPa,RP0.2=690 MPa,δ=23.6％,n=0.27,r=1.17,强塑积达到23836MPa.％.退火温度过高或过低,都会减少残余奥氏体的体积分数、改变其形貌并增大其尺寸,导致综合力学性能下降.
参考文献
| [1] | Balk S C,Kim S,Jin Y S,Kwon O.ISIJ Int,2001; 41:290 |
| [2] | Thomson R C,Miller M K.Acta Mater,1998; 46:2203 |
| [3] | Kim S J,Lee C G,Lee T H,Oh C S.ISIJ Int,2002; 42:1452 |
| [4] | Pereloma E V,Russell K F,Miller M K,Timokhina I B.Scr Mater,2008; 58:1078 |
| [5] | Pereloma E V,Timokhina I B,Hodgson P D.Mater Sci Eng,1999; A273-275:448 |
| [6] | Jiao S,Hassani F,Donaberger R L,Essadiqi E,Yue S.ISIJ Int,2002; 42:299 |
| [7] | De Meyer M,Vanderschueren D,De Cooman B C.ISIJ Int,1999; 39:813 |
| [8] | Chen Y,Wang L H,Dong L G,Li F P,Zhang Y.J Iron Steel Rea Int,2007; 14(suppl 1):368 |
| [9] | Jacques P J,Girault E,MerteNS A,Verlinden B,van Humbeeck J,Delannay F.ISIJ Int,2001; 41:1068 |
| [10] | Mahieu J,Maki J,De Cooman B C,Claessens S.Metall Trans,2002; 33A:2573 |
| [11] | Maki J,Mahieu J,De Cooman B C,Claessens S.Curr Opin Solid State Mater Sci,2004; 8:285 |
| [12] | Sakuma Y,Matsumura O,Akisue O.ISIJ Int,1991; 31:1348 |
| [13] | Basuki A,Aernoudt E.Scr Mater,1999; 40:1003 |
| [14] | Jimenez-Melero E,van Dijk N H,Zhao L,Sietsma J,Offerman S E,Wright J P,van der Zwaag S.Aeta Mater,2009; 57:533 |
| [15] | Chen H C,Era H,Shimizu M.Metall Trans,1989; 20A:437 |
| [16] | Lesch C,Alvarez P,Bleck W,Gil Sevillano J.Metall Mater Trans,2007; 38A:1882 |
| [17] | Salvatori I,Moore W B R.ISIJ Int,2000; 40(suppl 1):179 |
| [18] | Reis A C C,Bracke L,Petrov R,Kaluba W J,Kestens L.ISIJ Int,2003; 43:1260 |
| [19] | Funakawa Y,Shiozaki T,Tomita K,Yamamoto T,Maeda E.ISIJ Int,2004; 44:1945 |
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