利用共聚焦激光扫描显微镜原位观察不同升温速率下双相不锈钢中奥氏体(γ)向高温铁素体(δ)转变的全过程.结果表明,γ→δ相变存在两种转变机制:即形核-长大机制和相界迁移机制.在升温速率较高的情况下相变以形核-长大为主,在升温速率较低的情况下以相界迁移为主,多数情况下两种转变机制共存.利用固态相变形核理论分析了不同相变机制产生的原因,并通过扩散控制长大理论对δ的长大速度及其影响因素做出探讨.
参考文献
| [1] | Iza-mendia A;Pinol-juea A;Urcola J J et al.Microstructural and mechanical behavior of a duplex stainless steel under hot working conditions[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29:2975-2985. |
| [2] | Hutchinson W H;Ushioda K;Runnsj G .Anisotropy of tensile behavior in a duplex stainless steel sheet[J].Materials Science and Technology,1985,1:728-731. |
| [3] | W.Reick .Recrystallization-Transformation Combined Reactions during Annealing of a Cold Rolled Ferritic-Austenitic Duplex Stainless Steel[J].ISIJ International,1998(6):567-571. |
| [4] | 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. |
| [5] | Zhongzhu LIU;Yoshinao KOBAYASHI;Jian YANG;Kotobu NAGAI;Mamoru KUWABARA .'In-situ' Observation of the δ/γ Phase Transformation on the Surface of Low Carbon Steel Containing Phosphorus at Various Cooling Rates[J].ISIJ International,2006(6):847-853. |
| [6] | 梁高飞,王成全,方园.AISI 304不锈钢加热过程中高温δ相形核与生长的原位观察[J].金属学报,2006(08):805-809. |
| [7] | Mark REID;Dominic PHELAN;Rian DIPPENAAR .Concentric Solidification for High Temperature Laser Scanning Confocal Microscopy[J].ISIJ International,2004(3):565-572. |
| [8] | McDonald NJ;Sridhar S .Observations of the advancing delta-ferrite/gamma-austenite/liquid interface during the peritectic reaction[J].Journal of Materials Science,2005(9/10):2411-2416. |
| [9] | 戚正风.固态金属中的扩散与相变[M].北京:机械工业出版社,1998 |
| [10] | Mcdonald N J;Sridhar S.Peritectic reaction in the iron-carbon,iron-nickel,and iron-chromium-nickel system[A].,2003:381-393. |
| [11] | Vitek J M;Vitek S A;David S A .Numerical modeling of diffusion-controlled phase transformations in ternary systems and application to the ferrite/austenite transformation in the Fe-Cr-Ni system[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1995,26:2007-2025. |
| [12] | 石德珂.材料科学基础[M].北京:机械工业出版社,2002 |
| [13] | 陆世英.不锈钢[M].北京:原子能出版社,1995 |
| [14] | 范弗莱克 L H.材料科学与材料工程基础[M].北京:机械工业出版社,1984 |
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%