国家自然科学基金(10477010)

作品数:17被引量:108H指数:7
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相关作者:许庆彦柳百成石玉峰潘冬于静更多>>
相关机构:清华大学中航工业北京航空材料研究院北京航空航天大学更多>>
相关期刊:《Transactions of Nonferrous Metals Society of China》《稀有金属材料与工程》《Tsinghua Science and Technology》《特种铸造及有色合金》更多>>
相关主题:定向凝固MICROSTRUCTURE枝晶生长DIRECTIONAL_SOLIDIFICATION熔模铸造更多>>
相关领域:金属学及工艺一般工业技术自动化与计算机技术机械工程更多>>
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Effect of cooling rate on solidification parameters and microstructure of A1-7Si-0.3Mg-0.15Fe alloy被引量:10
《Transactions of Nonferrous Metals Society of China》2014年第6期1645-1652,共8页陈瑞 石玉峰 许庆彦 柳百成 
Projects (2005CB724105,2011CB706801) supported by the National Basic Research Program of China;Projects (10477010,51171089) supported by the National Natural Science Foundation of China;Projects (2009ZX04006-041-04,2011ZX04014-052) supported by the Important National Science&Technology Specific,China
The effects of cooling rate on the solidification parameters and microstructure of Al-7Si-0.3Mg-0.15 Fe alloy during solidification process were studied.To obtain different cooling rates,the step casting with five dif...
关键词:aluminium alloys cooling rate thermal analysis solidification parameters MICROSTRUCTURE 
考虑包晶相的Ti-Al合金定向凝固枝晶生长数值模拟
《铸造》2012年第12期1415-1421,共7页徐吉祥 许庆彦 程锦 张虎 柳百成 
国家重点基础研究发展计划项目(2005CB724105,2011CB706801);国家自然科学基金项目(10477010,51171089)
考虑二元合金包晶反应和包晶转变过程,采用改进的CA方法建立了Ti-Al合金定向凝固过程中的组织演变数值计算模型,对液态金属冷却定向凝固过程中Ti-47.8Al(原子分数,%)合金包晶相的形成和具有不同优先生长方向的柱状晶的竞争生长进行了模...
关键词:TI-AL合金 定向凝固 包晶反应 微观组织模拟 温度梯度 
Simulation and experimental validation of three-dimensional dendrite growth被引量:1
《Transactions of Nonferrous Metals Society of China》2012年第11期2756-2761,共6页石玉峰 许庆彦 柳百成 
Projects (2005CB724105, 2011CB706801) supported by the National Basic Research Program of China;Projects (10477010, 51171089) supported by the National Natural Science Foundation of China;Project (2007AA04Z141) supported by the High-Tech Research and Development Program of China;Projects (2009ZX04006-041-04, 2011ZX04014-052) supported by the Important National Science & Technology Specific
A three-dimensional (3-D) modified cellular automaton (MCA) method was developed for simulating the dendrite morphology of cubic system alloys. Two-dimensional (2-D) equations of growth velocities of the dendrit...
关键词:modified cellular automation 3-D dendrite morphology dendrite growth directional solidification NH4Cl-H2O transparent alloy 
基于改进元胞自动机模型的三元合金枝晶生长的数值模拟被引量:9
《物理学报》2012年第10期455-462,共8页石玉峰 许庆彦 柳百成 
国家重点基础研究发展计划(批准号:2005CB724105和2011CB706801);国家自然科学基金(批准号:10477010和51171089);国家高技术研究发展计划(批准号:2007AA04Z141);国家科技重大专项(批准号:2009ZX04006-041-04和2011ZX04014-052)资助的课题~~
在二元合金元胞自动机模型的基础上,通过耦合多元合金热力学相平衡求解器PanEngine,建立了三元合金改进的元胞自动机模型,可模拟初生相枝晶的生长过程.模型考虑了曲率过冷和成分过冷对界面平衡溶质成分的影响,通过不同组元的无量纲溶质...
关键词:改进的元胞自动机 三元合金 枝晶生长 
Progress on modeling and simulation of directional solidification of superalloy turbine blade casting被引量:6
《China Foundry》2012年第1期69-77,共9页Xu Qingyan Liu Baicheng Pan Dong Yu Jing 
financially supported by the National Basic Research Program of China (No.2005CB724105,2011CB706801);National Natural Science Foundation of China (No.10477010);National High Technology Research,Development Program of China (No.2007AA04Z141);Important National Science & Technology Specific Projects (No.2009ZX04006-041,2011ZX04014-052)
Directional solidified turbine blades of Ni-based superalloy are widely used as key parts of the gas turbine engines.The mechanical properties of the blade are greatly influenced by the final microstructure and the gr...
关键词:Ni-based superalloy MICROSTRUCTURE directional solidification MODELING 
Numerical simulation of microstructure evolution during directional solidification process in directional solidified (DS) turbine blades被引量:8
《Science China(Technological Sciences)》2011年第12期3191-3202,共12页ZHANG Hang XU QingYan TANG Ning PAN Dong LIU BaiCheng 
supported by the National Basic Research Program of China (Grant Nos. 2005CB724105, 2011CB706801);National Natural Science Foundation of China (Grant No. 10477010);National High Technology Research and Development Program of China (Grant No. 2007AA04Z141);Important National Science & Technology Specific Projects (Grant Nos. 2009ZX04006-041, 2011ZX04014-052)
Directional solidified(DS) turbine blades are widely used in advanced gas turbine engine. The size and orientation of columnar grains have great influence on the high temperature property and performance of the turbin...
关键词:directional solidified (DS) turbine blade Cellular Automation (CA) numerical modeling and simulation 
对流作用下枝晶形貌演化的数值模拟和实验研究被引量:9
《物理学报》2011年第12期376-386,共11页石玉峰 许庆彦 柳百成 
国家重点基础研究发展计划(批准号:2005CB724105,2011CB706801);国家自然科学基金(批准号:10477010,51171089);国家高技术研究发展计划(批准号:2007AA04Z141)资助的课题~~
合金凝固过程中存在于枝晶尖端液相区的强制对流和自然对流均能改变溶质扩散层厚度,从而会对枝晶形貌产生较大影响.在元胞自动机模型基础上,耦合液体流动方程、热传导方程和溶质对流扩散方程,建立了新的计算微观组织演化的数值模型,并...
关键词:元胞自动机 对流 NH4Cl-H2O溶液 定向凝固 
Three-dimensional microstructure simulation of Ni-based superalloy investment castings被引量:7
《Science China(Physics,Mechanics & Astronomy)》2011年第5期851-855,共5页PAN Dong XU QingYan LIU BaiCheng 
financially supported by the National Basic Research Program of China (Grant Nos. 2005CB724105 and 2011CB706801);the National Natural Science Foundation of China (Grant No. 10477010);the National High Technology Research, Development Program of China (Grant No. 2007AA04Z141);the Important National Science & Technology Specific Projects (Grant No. 2009ZX04006-041-04)
An integrated macro and micro multi-scale model for the three-dimensional microstructure simulation of Ni-based superalloy investment castings was developed, and applied to industrial castings to investigate grain evo...
关键词:MICROSTRUCTURE SIMULATION Ni-based superalloy investment casting 
采用正交设计优化单晶合金定向凝固数值模拟参数(英文)被引量:15
《稀有金属材料与工程》2010年第5期767-770,共4页金海鹏 李嘉荣 于静 刘世忠 
National Natural Science Foundation of China (10477010);Beijing Institute of Aeronautical Materials Foundation (KF40070122)
采用正交设计方法研究单晶高温合金定向凝固过程数值模拟所需参数对温度场和冷却曲线的影响。结果表明:单晶高温合金凝固曲线对模拟参数十分敏感,特别敏感于铸件与铸型之间的界面换热系数。通过正交设计获得边界条件参数使模拟结果与试...
关键词:数值模拟 单晶高温合金 定向凝固参数 热交换系数 正交设计 
镍基高温合金熔模铸件凝固过程宏/微观多尺度模拟被引量:6
《中国有色金属学报》2010年第2期329-338,共10页潘冬 许庆彦 柳百成 
国家重点基础研究发展计划资助项目(2005CB724105);国家自然科学基金资助项目(10477010);国家高技术研究发展计划资助项目(2007AA04Z141)
建立镍基高温合金熔模铸件凝固过程的宏/微观多尺度数理模型,基于射线追踪法处理热辐射,模拟铸件的温度分布,采用三维宏/微观网格嵌套和改进的CA方法模拟微观组织,并依据微观组织模拟结果处理结晶潜热,实现微观与宏观模拟的耦合。依据...
关键词:高温合金 熔模铸造 多尺度模拟 宏观缩孔缩松 微观缩松 微观组织 
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