利用高温共焦激光扫描显微镜,对低碳钢进行了马氏体相变的原位动态观察.结果表明,实验用低碳钢在连续冷却过程中形成板条马氏体,Ms点约为373℃,Mf点约为300℃.板条马氏体主要在退火孪晶处以及奥氏体晶界及其角隅处形核,或者在先形成的板条处形核,再以60°或120°角向奥氏体晶内生长.板条束的形成也有两种类型,一类以先形成的板条为基准逐步形成彼此平行的板条束,另一类则由先形成的板条触发60°或120°方向的板条.最终构成正三角形、平行四边形等几何形状.
参考文献
| [1] | Norio Y;Hiroyuki S;Toshihiko E .Solubility of MnS in Fe-Ni alloys as determined by in-situ observation of precipitation of MnS with a confocal scanning laser microscope[J].ISIJ International,1998,38(04):317-323. |
| [2] | 温娟;王立峰;刘晓岚.高温激光显微镜的介绍及其对钢铁原位观察的应用[J].首钢科技,2008(05):35-39. |
| [3] | D. Phelan;N. Stanford;R. Dippenaar .In situ observations of Widmanstatten ferrite formation in a low-carbon steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):127-134. |
| [4] | Dippenar R;Phelan D.High temperature solid state phase transformations[A].United States of America,2003:967-978. |
| [5] | B. COLETTI;S. VANTILT;B. BLANPAIN .Observation of Calcium Aluminate Inclusions at Interfaces between Ca-Treated, Al-Killed Steels and Slags[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,2003(5):533-538. |
| [6] | R. J. DIPPENAAR;D. J. PHELAN .Delta-Ferrite Recovery Structures in Low-Carbon Steels[J].Metallurgical and Materials Transactions, B. Process metallurgy and materials processing science,2003(5):495-501. |
| [7] | H. YIN;T. EMI;H. SHIBATA .MORPHOLOGICAL INSTABILITY OF δ-FERRITE/γ-AUSTENITE INTERPHASE BOUNDARY IN LOW CARBON STEELS[J].Acta materialia,1999(5):1523-1535. |
| [8] | Hongbin.YIN .Characteristics of Agglomeration of Various Inclusion Particles on Molten Steel Surface[J].ISIJ International,1997(10):946-955. |
| [9] | Dominic PHELAN;Rian DIPPENAAR .Instability of the Delta-ferrite/austenite Interface in Low Carbon Steels: The Influence of Delta-ferrite Recovery Sub-structures[J].ISIJ International,2004(2):414-421. |
| [10] | Taro KIZU;Yasunobu NAGATAKI;Toru INAZUMI .Intergranular and Internal Oxidation during Hot-rolling Process in Ultra-low Carbon Steel[J].ISIJ International,2002(2):206-214. |
| [11] | 苏德达;李家俊.钢的高温金相[M].天津:天津大学出版社:144-170. |
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%