鞠新华,田志红,崔桂彬,孟杨,蔡宁

• 1:首钢技术研究院

摘要(Abstract)：

利用EBSD技术开发了一种残留奥氏体(以下简称残奥)形态、尺寸的定量分析方法,并用该方法结合XRD法对Q&P钢中残奥的机械稳定性进行了研究。研究表明,在变形的初期,Q&P钢残奥的机械稳定性首先受其碳含量的影响,碳含量越低,残奥的稳定性越差。在变形的初期这部分含碳量低的残奥会首先发生马氏体转变。在Q&P钢变形的不同阶段,各种尺寸、各种形态的残奥的稳定性会发生变化。Q&P钢中长宽比大于5的残奥的稳定性最差,在拉伸变形的初期这部分残奥会优先转变成马氏体,相对转变量超过47%。尺寸过小或过大的残奥都不是很稳定,在拉伸的初期就容易发生马氏体转变。

关键词(KeyWords)： Q&P钢;残奥;形态;尺寸;EBSD

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 鞠新华,田志红,崔桂彬,孟杨,蔡宁

DOI: 10.13289/j.issn.1009-6264.2014.10.023

参考文献(References)：

• [1]Matlock D K,Brautigam V E,Speer J G.Application of partitioning(Q&P)process to a medium carbon high steel[J].Mater Sci Forum,2003,426-432:1089-1094.
• [2]Bhadeshia H K D H,Edmons D V.The bainite transformation in a silicon steel[J].Metallurgical and Materials Transactions A,1979,10(7):895-907.
• [3]Sinhe A K.Ferrous Physical Metallurgy[M].Butterworths,London,1989.
• [4]Zackay V F,Parker E R,Fahr D,et al.The enhancement of ductility on high-strength steels[J].Trans of ASM,1967,60(2):252-258.
• [5]康永林,王波.TRIP钢板的组织、性能与工艺控制[J].钢铁研究学报,1999,11(3):62-66.KANG Yong-lin,WANG Bo,The microstructure,properties and process controlling of TRIP steel[J].The Research of Steel and Iron,1999,11(3):62-66.
• [6]Sugimoto Koh-ichi,Usui Noboru,Kobayashi Mitsuyuki,et al.Effects of volume fraction and stability of retained austenite on ductility of TRIP-aided dual-phase steels[C].ISIJ International,1992,32(12):1311-1318.
• [7]Sugimoto Koh-ich,Nagasaka Akihiko,Kobayashi Mitsuyuki,et al.Effects of retained austenite parameters on warm stretch-flangeability in TRIP-aided dual-phase sheet steels[C].ISIJ International,1999,39(1):56-63.
• [8]江海涛,唐荻,刘强,等.TRIP钢中残余奥氏体及其稳定性[J].钢铁,2007,42(8):60-63.JIANG Hai-tao,TANG Di,LIU Qiang.et al.The retained austenite and its stability in TRIP steel[J].The Steel and Iron,2007,42(8):60-63.
• [9]孙鹏,李麟,符仁钰,等.HSLA-TRIP钢动态拉伸性能和残余奥氏体转变[J].钢铁,2004,39(10):63-67.SUN Peng,LI Lin,FU Ren-yu,et al.The dynamic tensile property and the transformation of retained austenite[J].The Steel and Iron,2004,39(10):63-67.
• [10]Arif Basuki,Etienne Aernoudt.Influence of rolling of TRIP steel in the intercritical region on the stability of retained austenite[J].Materials Processing Technology,1999,89-90:37-43.
• [11]Jacques P,Girault E,Catlin T,et al.Bainite transformation of low carbon Mn-Si TRIP-assisted multiphase steels influence of silicon content on cementite precipitation and austenite retention[J].Materials Science and Engineering A,1999,273-275:475-479.
• [12]李麟,韦习成,付仁钰.高强度低合金TRIP钢的研究现状及应用前景[J].特殊钢,2002,23(增刊):1-5.LI Lin,WEI Xi-cheng,FU Ren-yu.The research status and application prospective of high strength low alloy TRIP steel[J].Special Steel,2002,23(supplement):1-5.
• [13]Sugimoto K,Kobayashi M,Shirsawa H.Effects of second phase morphology on retained austenite morphology and tensile properties in a TRIP-aided dual-phase steel sheet[J].ISIJ Int,1993,33(7):775-782.
• [14]Tsukatani I,Hashimoto S,Inoue T.Effects of silicon and manganese addition on mechanical properties of high-strength hot-rolled sheet steel contained retained austenite[J].ISIJ Int,1991,31(9):992-1000.
• [15]祝丽叶.冷轧TRIP钢显微组织和织构的研究[D].北京:北京科技大学,2007:32.ZHU Li-ye.Research of texture and microstructure in cold rolled TRIP steel[D].Beijing:University of Science and Technology Beijing,2007:32.
• [16]高绪涛,赵爱民,赵征志,等.热轧TRIP钢残余奥氏体及其稳定性研究[J].材料工程,2011,11:39-43.GAO Xu-tao,ZHAO Ai-min,ZHAO Zheng-zhi,et al.Investigation of retained austenite and its stability in hot rolled TRIP steel[J].Materials Engineering,2011,11:39-43.
• [17]定巍,江海涛,唐荻,等.低硅TRIP钢的力学性能及残余奥氏体稳定性研究[J].材料工程,2010,4:72-80.DING Wei,JIANG Hai-tao,TANG Di,et al.Mechanical property and retained austenite of low-Si TRIP steel[J].Materials Engineering,2010,4:72-80.

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