合金成分对1000 MPa级TRIP钢组织和力学性能的影响Effect of composition on microstructure and mechanical properties of 1000 MPa grade TRIP steel
彭继波,陈立本,姜沪,何燕霖,张功庭,李麟
摘要(Abstract)：
采用SEM、TEM以及XRD等技术研究了合金元素Al、V、Ti对1000 MPa级Fe-C-Mn-Si基TRIP钢显微组织和室温拉伸性能的影响。结果发现,添加钒-钛微合金元素可使钢中析出Ti C型碳化物纳米颗粒,产生析出强化作用,同时细化晶粒进一步提高TRIP钢的强塑积;通过热力学计算可以发现,添加Al元素会减少两相区奥氏体含量但可显著增加其碳含量,从而延迟贝氏体转变,增加残留奥氏体稳定性,提高TRIP钢的强塑积;此外,研究还对比了不同碳含量对TRIP钢力学性能的影响,结果发现,对于复合添加Al、V、Ti的TRIP钢而言,含碳0.3%左右的试验钢强塑积可达到25000 MPa·%以上,而碳含量降至0.21%时,后续冷却时组织中出现了马氏体相,TRIP效应减弱,力学性能明显降低。
关键词(KeyWords)： 合金元素;残留奥氏体;TRIP效应;力学性能
基金项目(Foundation):
作者(Author): 彭继波,陈立本,姜沪,何燕霖,张功庭,李麟
DOI: 10.13289/j.issn.1009-6264.2016.s1.010
参考文献(References)：
- [1]董瀚,曹文全,时捷,等.第3代汽车钢的组织与性能调控技术[J].钢铁,2011,46(6):1-11.DONG Han,CAO Wen-quan,SHI Jie,et al.Microstructure and performance control technology of the 3rdgeneration auto sheet steels[J].Iron and Steel,2011,46(06):1-11.
- [2]Zackay V F,Parker E R,Fahr D,et al.The enhancement of ductility in high-strength steels[J].ASM Trans Quart,1967,60(2):252-259.
- [3]米振莉,陈美芳,李志超,等.控轧控冷TRIP钢的微观相组成及其与力学性能的关系[J].北京科技大学学报,2012,34(9):1023-1027.MI Zhen-li,CHEN Mei-fang,LI Zhi-chao,et al.Phase composition of controlled rolling TRIP steel and its relationship with mechanical properties[J].Chinese Journal of Engineering,2012,34(9):1023-1027.
- [4]李麟,符仁钰.相变诱发塑性钢的研究进展[J].上海金属,2000,22(2):3-8.LI Lin,FU Ren-yu.Progress in phase transformation induce plastics steel[J].Shanghai Metals,2000,22(2):3-8.
- [5]朱娜琼.汽车用钢中碳化物析出行为及其组织和性能的研究与计算[D].上海大学,2013.ZHU Na-qiong.Study and calculation of the precipitation behavior of carbides in automotive steels and the microstructure and properties[D].Shanghai University,2013.
- [6]Miller R L.A rapid X-ray method for the determination of retained austenite[J].ASM Trans Quart,1964,57:892-899.
- [7]Guyon H,Heidtmann U.AHSS-Product range and product performance from a supplier point of view[C]∥European Automotive Supplier Conference,2004:33-72.
- [8]Samek L,De Moor E,Penning J,et al.Influence of alloying elements on the kinetics of strain-induced martensitic nucleation in low-alloy,multiphase high-strength steels[J].Metall Mater Trans A,2006,37(1):109-124.
- [9]林慧国,傅代直.钢的奥氏体转变曲线[M].北京:机械工业出版社,1988:114.
- [10]吴承建.金属材料学[M].北京:冶金工业出版社,2000.
文章评论(Comment)：
|
||||||||||||||||||
|
||||||||||||||||||