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国家自然科学基金(50771081): 作品数：10被引量：42H指数：4; 导出分析报告; 相关作者：刘林傅恒志赵新宝张军张卫国更多>>; 相关机构：西北工业大学更多>>; 相关期刊：《中国有色金属学报》《材料科学与工程学报》《材料导报》《China Foundry》更多>>; 相关主题：定向凝固AM3SINGLE_CRYSTAL单晶高温合金定向凝固过程更多>>; 相关领域：金属学及工艺一般工业技术冶金工程更多>>

单晶高温合金定向凝固过程中杂晶的竞争淘汰机制(英文)被引量：7: 《稀有金属材料与工程》2011年第1期9-13,共5页赵新宝刘林张卫国屈敏张军傅恒志; National Natural Science Foundation of China (50771081);Hi-tech Research and Development Program of China ("863"Program) (2007AA03Z552);Research Fund of the State Key Laboratory of Solidification Processing (NWPU) (09-BZ-2010); 在高梯度定向凝固装置中采用枝晶方向与热流偏离的籽晶制备AM3晶体,分析晶体生长过程中杂晶的形核原理和不同晶粒的竞争淘汰机制。结果表明,枝晶方向与热流偏离造成的过冷可促使杂晶的形成。枝晶生长方向与热流偏离较大的晶粒在一定条...; 关键词：单晶高温合金杂晶形核竞争生长

Effect of solidification rate on MC-type carbide morphology in single crystal Ni-base superalloy AM3被引量：4: 《Transactions of Nonferrous Metals Society of China》2010年第10期1835-1840,共6页余竹焕刘林赵新宝张卫国张军傅恒志; Projects(50771081, 50931004) supported by the National Natural Science Foundation of China;Project(2010CB631202) supported by the National Basic Research Program of China; In order to study the effect of the withdrawing rate on carbide morphology,MC-type carbide in single crystal superalloy AM3 was systematically investigated with sample growth rates from 3.5 μm/s to 500 μm/s.The carb...; 关键词：single crystal Ni-base superalloy carbide morphology withdrawing rate

Effect of carbon additions on the microstructure of a single crystal Ni-based superalloy AM3被引量：2: 《China Foundry》2010年第4期352-356,共5页Yu Zhuhuan Liu Lin Zhao Xinbao Zhang Weiguo Zhang Jun Fu Hengzhi; supported financially by the National Natural Science Foundation of China (Grant No. 50771081,50931004);the National Basic Research Program of China (2010CB631202); The microstructure of experimental nickel-base single crystal superalloys with different levels of carbon has been studied. The results indicated that with increasing carbon addition, the liquidus temperature decrease...; 关键词：Ni-based superalloy single crystal CARBON SEGREGATION EUTECTIC

Effect of solidification parameters on the microstructures of a single crystal Ni-based superalloy AM3被引量：4: 《China Foundry》2010年第3期217-223,共7页Yu Zhuhuan Liu Lin Zhao Xinbao Zhang Weiguo Zhang Jun Fu Hengzhi; supported by the National Natural Science Foundation of China (Grant No.50771081,50931004);the National Basic Research Program of China (2010CB631202); A single crystal Ni-based superalloy AM3 was processed at withdraw rates of 3.5, 10, 50, 100, 200, and 500 μm·s-1, respectively.The as-cast microstructures and solidification segregation ratio were characterized wit...; 关键词：Ni-based superalloy single crystal withdraw rate solidi fi cation PDAS SDAS

镍基高温合金定向凝固过程中雀斑缺陷研究进展被引量：10: 《材料科学与工程学报》2010年第1期145-151,共7页高斯峰刘林胡小武葛丙明张军傅恒志; 国家重点基础研究发展计划资助项目(2006CB605202);国家自然科学基金资助项目(50771081,50827102); 本文简述了近年来定向和单晶镍基高温合金凝固过程中雀斑缺陷的研究进展,具体论述了雀斑缺陷的形成机制以及雀斑的预判模型,并从合金成分、凝固参数(抽拉速率和温度梯度)、凝固界面形态以及试样形状和尺寸等方面分析和论述了这些因素对...; 关键词：镍基高温合金雀斑定向凝固

Influence of directional solidification variables on primary dendrite arm spacing of Ni-based superalloy DZ125被引量：3: 《China Foundry》2009年第4期300-304,共5页Zhang Weiguo Liu Lin Huang Taiwen Zhao Xinbao Qu Min Yu Zhuhuan Fu Hengzhi; supported by the National Natural Science Foundation of China(50771081,50827102);the National Basic Research Program of China(2006CB605202); The primary dendrite morphology and spacing of DZ125 superalloy have been observed during directional solidification under high thermal gradient about 500 K/cm. The results reveal that the primary dendrite arm spacing...; 关键词：directional solidification thermal gradient cooling rate primary dendrite arm spacing SUPERALLOY

Effect of sample diameter on primary dendrite spacing of directionally solidified Al-4%Cu alloy被引量：4: 《中国有色金属学会会刊：英文版》2009年第1期1-8,共8页屈敏刘林唐峰涛张军傅恒志; Project(50771081) supported by the National Natural Science Foundation of China; The relationship between primary dendrite arm spacing and sample diameter was studied during directional solidification for Al-4%Cu (mass fraction) alloy. It is shown that primary dendrite spacing is decreased with th...; 关键词：AL-CU合金定向凝固间距调整机制实验

Al-4%Cu合金定向凝固枝晶/胞晶转变速率的研究: 《材料工程》2008年第12期1-5,共5页屈敏刘林张卫国赵新宝张军傅恒志; 国家自然科学基金资助项目(50771081); 通过实验和理论对比研究Al-4%(质量分数)Cu合金定向凝固胞晶/枝晶转变过程,得到胞晶/枝晶转变发生在尖端半径变化的拐点处。采用KGT模型与非平衡效应研究与胞晶/枝晶转变过程相对应的高速枝晶/胞晶转变特征。结果表明:尖端半径和界面温...; 关键词：定向凝固枝晶/胞晶转变界面温度尖端半径溶质截留

Al-Cu合金定向凝固枝晶尖端开裂及间距调整机制被引量：1: 《中国有色金属学报》2008年第10期1813-1818,共6页屈敏刘林唐峰涛张卫国黄太文傅恒志; 国家自然科学基金资助项目(50771081); 采用定向凝固技术研究Al-4%Cu(质量分数)合金凝固界面形态和胞/枝晶间距调整。结果表明,在v=30μm/s低速时,枝晶通过竞争淘汰调整一次枝晶间距;在v=300μm/s高速时,枝晶通过尖端开裂而不是以往的三次枝生长调整间距。尖端半径与枝晶间...; 关键词：AL-CU合金定向凝固枝晶间距尖端开裂

难熔元素对镍基单晶高温合金凝固特性及组织的影响被引量：12: 《材料导报》2008年第9期38-42,54,共6页刘刚刘林赵新宝闵志先葛丙明; 国家自然科学基金资助(50771081); 镍基单晶高温合金的性能与难熔元素Re、W、Ta等的含量之间有着紧密的联系。总结了在镍基单晶高温合金的发展过程中难熔元素添加的特点,综述了难熔元素对镍基单晶高温合金的凝固特性与凝固组织的影响,并指出了其中存在的问题,展望了未来...; 关键词：难熔元素单晶高温合金凝固特性

国家自然科学基金(50771081)