主要采用热模拟技术研究了不同终轧工艺和不同回火温度对石油储备罐体用高强度钢板JGR610E显微组织的影响,并利用金相和萃取复型等分析方法对不同工艺下的显微结构和碳化物进行了分析.结果表明,JGR610E钢在860℃左右终轧温度、20℃/s冷却速度下可以获得板条状低碳贝氏体组织,经过620℃回火后得到具有良好强韧性能的板条贝氏体和针状铁素体混合组织,其析出相主要有两类,尺寸在300nm左右的为含有Fe和Mn的MxCy型碳化物,尺寸范围在50～100nm的为含有Ti和Nb的MC型碳化物,且在该回火温度下,有大量的尺寸范围在几个纳米至十几个纳米尺寸的Ti(CN)析出.
参考文献
| [1] | Guo Z;Kimura N;Tagashira S et al.Kinetics and Crystallography of Intragranular Pearlite Transformation Nucleated at (MnS+VC) Complex Precipitates in Hypereutectoid Fe-Mn-C Alloys[J].ISIJ International,2002,42:1038. |
| [2] | 杜则裕;张德勤;田志凌 .低碳低合金钢焊缝金属的显微组织及其影响因素[J].钢铁,1999,34:67. |
| [3] | 董成瑞;金同哲 .非调质钢研究与应用的进展[J].特殊钢,2001,17:6. |
| [4] | Eijk V D;Walmsley J .Mechanisms of Inclusion Formation in Low Alloy Steels Deoxidised With Titanium[J].Materials Science and Technology,2001,1:55. |
| [5] | H.Mabuchi .The Role of Mn Depletion in Intra-Granular Ferrite Transformation in the Heat Affected Zone of Welded Joints with Large Heat Input in Structural Steels[J].ISIJ International,1996(11):1406-1412. |
| [6] | Dowling J M;Corbett J M;Kerr H V .Inclusion Phases and the Nucleation of Acicular Ferrite in Submerged Arc Welds in High Strength Low Alloy Steels[J].Metallurgical and Materials Transactions,1986,17A:1611. |
| [7] | Clarke A J;Speer J G;Miller M K et al.Carbon Partitioning to Austenite From Martensite or Bainite During the Quench and Partition (Q&P) Process:A Critical Assessment[J].Acta Materialia,2008,56:16. |
| [8] | Lee SJ;Park JS;Lee YK .Effect of austenite grain size on the transformation kinetics of upper and lower bainite in a low-alloy steel[J].Scripta materialia,2008(1):87-90. |
| [9] | Ishikawa F;Takahash T;Ochi T .Intragranular Ferrite Nucleastion in Medium Carbon Vanadium Steels[J].Metallurgical and Materials Transactions,1994,25A:929. |
| [10] | Yamamoto K.;Hasegawa T. .Effect of Boron on Intra-granular Ferrite Formation in Ti-Oxide Bearing Steels[J].ISIJ International,1996(1):80-86. |
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%