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.
参考文献
| [1] | Matlock D K;Brautigam V E;Speer J G .Application of partitioning (Q&P) process to a medium carbon high steel[J].Materials Science 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:Physical Metallurgy and Materials Science,1979,10(07):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(02):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(03):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[J].ISIJ International,1992,32(12):1311-1318. |
| [7] | Koh-ichi SUGIMOTO .Effects of Retained Austenite Parameters on Warm Stretch-flangeability in TRIP-aided Dual-phase Sheet Steels[J].ISIJ International,1999(1):56-63. |
| [8] | 江海涛,唐荻,刘强,刘仁东,严玲.TRIP钢中残余奥氏体及其稳定性的研究[J].钢铁,2007(08):60-63,82. |
| [9] | 孙鹏,李麟,符仁钰,韦习成.HSLA-TRIP钢动态拉伸性能和残余奥氏体转变[J].钢铁,2004(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].Journal of Materials Processing Technology,1999(0):37-43. |
| [11] | P. Jacques;E. Girault;T. Catlin;N. Geerlofs;T. Kop;S. van der Zwaag;F. Delannay .Bainite transformation of low carbon Mn-Si TRIP-assisted multiphase steels: influence of silicon content on cementite precipitation and austenite retention[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(0):475-479. |
| [12] | 李麟,韦习成,付仁钰,罗思东.高强度低合金TRIP钢的研究现状及应用前景[J].特殊钢,2002(z1):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 International,1993,33(07):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 International,1991,31(09):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. |
| [16] | 高绪涛,赵爱民,赵征志,张明明,张宇光.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. |
| [17] | 定巍,江海涛,唐荻,田志强,殷安民.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(04):72-75,80. |
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%