Experimental Investigation and Computer Simulation of Diffusion in Fe-Mo and Fe-Mn-Mo Alloys with Different Optimization Methods
Experimental Investigation and Computer Simulation of Diffusion in Fe-Mo and Fe-Mn-Mo Alloys with Different Optimization Methods
复制标题
Fe-Mo和Fe-Mn-Mo合金中不同优化方法扩散的实验研究和计算机模拟
DOI：
10.1007/s11661-016-3822-y
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
鲁晓刚
中科院分区：
文献类型：
--
作者：
郑伟森;鲁晓刚
为了模拟微合金钢中涉及面心立方和体心立方相的扩散相变，对面心立方和体心立方Fe-Mo和Fe-Mn-Mo合金的扩散迁移率进行了实验研究和评价。采用扩散偶技术，分别用Sauer-Freise法和Whitre-Green法提取了Fe-Mo和Fe-Mn-Mo合金的互扩散系数。在现有实验导纳的基础上，用传统方法优化了Fe-Mo和Fe-Mn-Mo系中fcc和bcc相的迁移率参数。同时，开发了一种直接方法，用于直接将迁移率与扩散曲线进行拟合，而不是本工作中的扩散系数。对Fe-Mo和Fe-Mn-Mo系中扩散行为的满意描述证实了直接法的可靠性。特别是两种方法得到的两组扩散迁移率均能较好地模拟Fe-Mo和Fe-Mn-Mo系中面心立方和体心立方相之间的扩散现象。
In order to simulate the diffusional phase transformations involving the fcc and bcc phases for microalloyed steels, the diffusion mobilities for fcc and bcc Fe-Mo and Fe-Mn-Mo alloys were experimentally investigated and critically assessed. The diffusion-couple technique was employed to extract the interdiffusion coefficients in Fe-Mo and Fe-Mn-Mo alloys with the Sauer–Freise and Whittle–Green methods. Based on the present experimental interdiffsivities, the mobility parameters for the fcc and bcc phases in the Fe-Mo and Fe-Mn-Mo systems were optimized using the traditional method. Simultaneously, a direct method was developed and utilized to directly fit mobilities to the diffusion profiles rather than the diffusivities in the.present work. The satisfactory description of the diffusion behavior in the Fe-Mo and Fe-Mn-Mo systems has confirmed the reliability of the direct method. Particularly, the two sets of diffusion mobilities obtained with both methods could simulate the diffusion phenomenon between the fcc and bcc phases in the Fe-Mo and Fe-Mn-Mo systems successfully.
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DOI：
10.1016/j.calphad.2008.02.002
发表时间：
2008-06
影响因子：
2.4
作者：
R. Bernst;G. Inden;A. Schneider
通讯作者：
R. Bernst;G. Inden;A. Schneider
影响因子：
1.4
作者：
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影响因子：
9.4
作者：
H. Larsson;R. Reed
通讯作者：
H. Larsson;R. Reed
DOI：
10.1016/0364-5916(87)90013-7
发表时间：
1987-04
影响因子：
2.4
作者：
Huang Weitning
通讯作者：
Huang Weitning
DOI：
10.1179/msc.1974.8.1.407
发表时间：
1974-01
期刊：
Metal Science
影响因子：
--
作者：
P. Alberry;C. W. Haworth
通讯作者：
P. Alberry;C. W. Haworth