王翠萍,黄剑洪,卢勇,刘兴军.Co-Ti合金中γ相粗化动力学的实验研究和相场模拟[J].稀有金属材料与工程,2019,48(9):2799~2807.[wangcuiping,huangjianhong,luyong,liuxingjun.Experimental Research and Phase-field Simulation of Coarsening Kinetics of γ Precipitates in Co-Ti Alloys[J].Rare Metal Materials and Engineering,2019,48(9):2799~2807.]
Co-Ti合金中γ相粗化动力学的实验研究和相场模拟
投稿时间:2018-03-14??修订日期:2018-05-04
中文关键词:??Co-19.7Ti合金??相场法??粗化动力学??温度
基金项目:国家重点研发计划,科技部国际科技合作专项
中文摘要:
??????本研究结合实验和相场法研究了反相Co-19.7Ti合金中无序γ析出相的组织演变和粗化行为。实验和模拟结果皆表明γ析出相的形貌随时效时间增加由近球形转变成条状。γ析出相平均粒径的粗化动力学遵循r3 = kt,可获得如下 。γ析出相平均粒径随时效时间的变化分为两个阶段,阶段I增长快速而阶段II增长速度减缓。时效温度由700oC增至750oC,γ相粒径分布的峰值变大以及粒径分布的宽度变窄,模拟结果与实验结果取得良好的一致性。
Experimental Research and Phase-field Simulation of Coarsening Kinetics of γ Precipitates in Co-Ti Alloys
英文关键词:Co-19.7Ti alloy??Phase-field method??Coarsening kinetics??Temperature
英文摘要:
??????The microstructure evolution and coarsening behaviors of disordered γ phase in the inverse Co-19.7Ti alloy have been investigated by experiment and phase-field method. Both the experimental and simulated results show that the morphologies of γ particles evolved from near-circular shape to plate-like shape as the aging time increases. The coarsening kinetics for the mean particle size obeys the cube law r3 = kt, and it can be obtained as: . There exist two distinct stages of the mean particle sizes increase versus aging time, the growth rate is dramatically larger in stage I and has a relatively slower increase in stage II. The summit value of precipitate size distributions become larger and the breadth of the distributions decrease from 700oC to 750oC, the simulated results reproduce well the experimental results.
作者单位E-mail
王翠萍?材料学院及福建省材料基因工程重点实验室?wangcp@xmu.edu.cn?
黄剑洪?材料学院及福建省材料基因工程重点实验室?353678465@qq.com?
卢勇?材料学院及福建省材料基因工程重点实验室?luyong@xmu.edu.cn?
刘兴军?哈尔滨工业大学深圳亚洲AG手机|开户材料科学与工程系?lxj@xmu.edu.cn?
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