全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2009 

Q&P钢塑性变形机制及组织-性能研究

, PP. 19-23

Keywords: Q&P钢,精细组织结构,力学性能,韧性断裂

Full-Text   Cite this paper   Add to My Lib

Abstract:

研究淬火和碳再分配(Q&P)热处理工艺对低碳硅-锰系Q&P钢的显微组织及精细结构的影响,并和常规工艺实验进行对比。通过SEM,TEM分析,经Q&P工艺热处理后的钢板可获得板条马氏体和残余奥氏体两相组织,残余奥氏体呈膜状。利用XRD技术并结合软件编程的手段对残余奥氏体进行了定量分析。采用MTS万能拉伸机测定了其力学性能并进行了断口观察,拉伸试样纤维区为比较典型的韧窝状形貌,体现出良好的韧性断裂特征。结果表明Q&P工艺处理后的钢板具有高的抗拉强度(1000MPa以上)和良好的塑性,残余奥氏体在组织中起到了相变诱发塑性的作用。

References

[1]  徐祖耀.马氏体相变与马氏体[M].北京:科学出版社,1980.418-420.
[2]  GERDEMANN F L H,SPEER J G,MATLOCK D K.Microstructure and hardness of steel grade 9260 heat-treated by the Quenching and Partitioning (Q&P) process[A].Materials Science and Technology[C].New Orleans,LA,USA:Association for Iron and Steel Technology,2004.439-449.
[3]  SPEER J G,EDMONDS D V,RIZZO F C.Partitioning of carbon from supersaturated plates of ferrite,with application to steel processing and fundamentals of the bainite transformation[J].Current Opinion in Solid State & Materials Science,2004,8(3):219-237.
[4]  MATLOCK D K,BRUTIGAM V E,SPEER J G.Application of the quenching and partitioning (Q&P) process to a medium-carbon,high-Si micro-alloyed bar steel[J].Materials Science Forum,2003,426-432(2):1089-1094.
[5]  SPEER J G,RIZZO F C,MATLOCK D K,et al.The "quenching and partitioning" process:Background and recent progress[J].Materials Research,2005,8(4):417-423.
[6]  SPEER J G,STREICHER A M,MATLOCK D K,et al.Quenching and partitioning:a fundamentally new process to create high strength TRIP sheet microstructures[A].The Thermodynamics,Kinetics,Characterization and Modeling of Austenite Formation and Decomposition[C].Chicago,IL,USA:Minerals Metals and Mater,2003.502-522.
[7]  MATLOCK D K,DE COOMAN B C,SCHROTH J G,et al.Carbon partitioning into austenite after martensite transformation[J].Acta Materialia,2003,51(9):2611-2622.
[8]  韦习成,李麟,符仁钰.Trip钢显微组织与性能关系的评述[J].钢铁研究学报,2001,13(5):71-76.
[9]  郭峰,李志.断裂韧度与钢组织性能的关系[J].失效分析与预防,2007,2(4):59-64.
[10]  SALEH M H,PRIETNER R.Retained austenite in Dual-phase silicon steels and its effect on mechanical properties[J].Material Processing Technology,2001,113(3):587-593.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133