Phase field modeling of isothermal 尾 鈫?#xa0;蠅 phase transformation in the Zr-Nb alloys

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• 作者：Bin Tang^a ; ^{toby198489@163.com} ; Y.-W. Cui^b ; Hongchao Kou^a ; Hui Chang^a ; Jinshan Li^a ; Lian Zhou^a
• 关键词：Isothermal 蠅 phase ; Phase field modeling ; Zr&ndash ; Nb alloys ; Diffusion
• 刊名：Computational Materials Science
• 出版年：2012
• 期刊代码：31_09270256
• 类别：et
• 出版时间：August, 2012
• 卷：61
• 期：Complete
• 页码：76-82
• 文件大小：1439 K

摘要

A phase field model has been developed to simulate the microstructural evolution during the isothermal 尾 鈫?#xA0;蠅 phase transformation in the Zr-Nb alloys. This model captures the essential physics of a mixed diffusive-displacive mechanism that leads to 尾 鈫?#xA0;蠅 transformation, and appropriately described the microstructural evolution and transformation kinetics. The Nb rich layers around the 蠅 particles can develop to a net shape structure, which results in the change of 蠅 morphology and the existence of stabilized 蠅 + 尾 microstructure with small 蠅 particles homogeneous distribute in the 尾 matrix.