用G1eeble-1500型热力模拟试验机研究了含钛高强度钢变形奥氏体在连续冷却过程中的相变规律,用膨胀法结合金相法建立了该钢变形和未变形奥氏体的连续冷却转变曲线(CCT),并探讨了该钢的热轧可行性.结果表明:高温变形促进该钢铁素体和珠光体相变,同时抑制了贝氏体相变,扩大了铁素体转变区;试验钢变形奥氏体的CCT曲线具有较宽的铁素体转变区,贝氏体的开始转变温度较低,可把此温度之上作为卷取区.这为热轧生产含钛高强度钢提供了基本条件.
参考文献
[1] | N. NAKATA;M. MILITZER .Modelling of microstructure evolution during hot rolling of a 780 MPa high strength steel[J].ISIJ International,2005(1):82-90. |
[2] | Chengjia Shang,Xuemin Wang,Xinlai He,Shanwu Yang,Yi Yuan.A Special TMCP Used to Develop a 800MPa Grade HSLA Steel[J].北京科技大学学报(英文版),2001(03):224-228. |
[3] | Misra RDK;Nathani H;Hartmann JE;Siciliano F .Microstructural evolution in a new 770 MPa hot rolled Nb-Ti microalloyed steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):339-352. |
[4] | C. J. Heckmann;D. Ormston;F. Grimpe .Development of low carbon Nb-Ti-B microalloyed steels for high strength large diameter linepipe[J].Ironmaking & Steelmaking: Products and applications,2005(4):337-341. |
[5] | Maria Jose Cancio;Guillermo Echaniz;Teresa Estela Perez .Characterisation of microalloy precipitates in the austenitic range of high strength low alloy steels[J].Steel Research,2002(8):340-346. |
[6] | 衣海龙,杜林秀,王国栋,刘相华.含铌微合金低碳钢的连续冷却过程的相变[J].东北大学学报(自然科学版),2005(08):743-746. |
[7] | 蔡爱国 .铌钒微合金中碳钢的微观组织与强度的关系[J].钢铁研究学报,1996,8(02):35-39. |
[8] | 张红梅,王国栋,刘相华.形变热处理工艺对低碳微合金管线钢晶粒细化的影响[J].机械工程材料,2002(01):13-15,34. |
[9] | Khlestov V M;Konopleva E V;Mcqueen H J .Kinetics of austenite transformation during thermomechanical processes[J].Canadian Metallurgical Quarterly,1998,37(02):75-88. |
[10] | Wang Guodong;Liu Xianghua.R&D of New Generation Steels[A].Sanya:The Chinese Society for Metals (CSM),2005:91-97. |
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%