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国家自然科学基金(50431030): 作品数：25被引量：72H指数：4; 导出分析报告; 相关作者：陈国良陈光惠希东姚可夫侯怀宇更多>>; 相关机构：南京理工大学北京科技大学清华大学兰州理工大学更多>>; 相关期刊：《International Journal of Minerals,Metallurgy and Materials》《Transactions of Nonferrous Metals Society of China》《稀有金属材料与工程》《特种铸造及有色合金》更多>>; 相关主题：CU玻璃形成能力分子动力学模拟NI非晶合金更多>>; 相关领域：金属学及工艺一般工业技术理学机械工程更多>>

Nb对Zr基块体金属玻璃形成能力与显微硬度的影响被引量：2: 《有色金属》2011年第1期62-65,77,共5页曹扬陈光盛婧陈国良; 国家自然科学基金重点资助项目(50431030);江苏省高技术研究资助项目(BG2005005); 研究Nb元素掺杂对Zr基块体金属玻璃非晶形成能力与显微硬度的影响。采用水淬法制备直径13mm、长度为50~70mm的Zr基块体金属玻璃。金属玻璃成分为（Zr41.2Ti13.8Cu12.5Ni10Be22.5）100-xNbx（x=0,0.1,1,2,3,5）。当Nb元素掺杂量x=5时,XRD...; 关键词：金属材料块体金属玻璃玻璃形成能力玻璃转变显微硬度

Solute trapping model based on solute drag treatment: 《Transactions of Nonferrous Metals Society of China》2010年第5期877-881,共5页王海丰刘峰陈正杨伟; Projects(50501020, 50395103, 50431030) supported by the National Natural Science Foundation of China; Project(NCET-05-870) supported by Program for New Century Excellent Talents in University of China; Project(CX200706) supported by the Doctorate Foundation of Northwestern Polytechnical University,China; A solute trapping model is developed based on a so-called solute drag treatment.By adopting a basic approach of phase-field models,and defining the free energy density in the interfacial region,a suitable interface sh...; 关键词：solute trapping solute drag diffusive interface

Effect of nonlinear liquidus and solidus on dendrite growth in bulk undercooled melts被引量：1: 《Transactions of Nonferrous Metals Society of China》2010年第3期490-494,共5页陈正王海丰刘峰杨伟; Projects(50501020, 50395103, 50431030) supported by the National Natural Science Foundation of China;Project(NCET-05-870) supported by Program for New Century Excellent Talents in Chinese University;Project(CX200706) supported by the Doctorate Foundation of Northwestern Polytechnical University,China; On the base of nonlinear liquidus and solidus,an extended model for dendrite growth in bulk undercooled melts was developed under local non-equilibrium conditions both at the interface and in the bulk liquid.In terms ...; 关键词：dendrite growth undercooled melts Ni-based alloys

液态Cu等温凝固的分子动力学模拟被引量：2: 《北京科技大学学报》2009年第9期1127-1131,共5页王荣山侯怀宇陈国良; 国家自然科学基金资助项目(No.50431030); 使用Tight-binding势函数,对液态Cu在等温凝固过程中的结构变化进行了分子动力学模拟(MD模拟)计算,得到体系在不同温度下的双体分布函数和配位数分布等静态结构信息,对等温凝固过程中FCC短程有序结构可能发生的变化以及由此导致的H-A键...; 关键词：液态铜等温凝固分子动力学模拟

Novel titanium particles reinforced Zr-based bulk metallic glass composites prepared by infiltration casting: 《Journal of University of Science and Technology Beijing》2008年第4期505-508,共4页Cuimei Zhang Xidong Hui Meiling Wang Guoliang Chen; This study was financially supported by the National Natural Science Foundation of China (No.50431030, No.59871025, and No.50171006).; A novel Ti/Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 composite was successfully prepared by infiltrating the melt into sintered Ti preform. It shows that the introduction of Ti particles into the composite results in an increase...; 关键词：melt infiltration bulk metallic-glass Ti particles mechanical properties

Molecular dynamics simulation of Ni_3Al melting: 《Journal of University of Science and Technology Beijing》2008年第4期425-429,共5页Rongshan Wang Huaiyu Hou Xiaodong Ni Guoliang Chen; This study was financially supported by the National Natural Science Foundation of China (No.50431030).; With the Voter-Chen version of embedded-atom model （EAM） potential and molecular dynamics, the melting of Ni3Al alloy was simulated by one-phase （conventional） and two-phase approaches. It is shown that the simula...; 关键词：NI3AL melting point molecular dynamics simulation EAM potential

Zr基金属玻璃原子结构研究被引量：3: 《中国科学（G辑）》2008年第4期406-416,共11页惠希东刘雄军高蕊侯怀宇方华志刘梓葵陈国良; 国家自然科学基金(批准号:50431030,59871025);国家重点基础研究发展计划(编号:2007CB613901);高等学校学科创新引智计划(编号:B07003)资助项目; 报道了利用经典分子动力学、逆蒙特卡罗模拟与第一性原理分子动力学模拟、以及高分辨透射电镜技术等对Zr-Ni和Zr-Ti-Al-Cu-Ni金属玻璃的原子结构进行的研究.重点研究了玻璃结构中的短程序结构(SRO)与中程序结构(MRO),研究表明,在Zr基金...; 关键词：金属玻璃原子结构短程序中程序分子动力学逆蒙特卡罗

Pd_(77.5)Cu_6Si_(16.5)块体非晶合金的制备与热稳定性被引量：1: 《稀有金属材料与工程》2008年第A04期801-804,共4页姚可夫李杨杨依强陈娜; 国家自然科学基金委员会(50431030和50671050);国家重点基础研究项目(2007CB613905)资助; 采用玻璃包覆净化方法和水淬法,制备出了尺寸达7mm的Pd77.5Cu6Si16.5块体非晶合金样品。热分析结果表明,与熔体旋淬甩带法制备的Pd77.5Cu6Si16.5非晶条带样品相比,所制备的Pd77.5Cu6Si16.5块体非晶合金样品具有更低的玻璃转变温Tg、更...; 关键词：玻璃熔覆水淬块体非晶合金热稳定性

Pd-Si binary bulk metallic glass被引量：3: 《Science China(Physics,Mechanics & Astronomy)》2008年第4期414-420,共7页YAO KeFu CHEN Na; the National Basic Research Program of China (Grant No. 2007CB613905);the National Natural Science Foundation of China (Grant Nos. 50671050 and 50431030); Pd80+xSi20-x (x=0,1,and 2) binary metallic glasses with the diameter ranging from 7 to 8 mm were prepared by a combination of fluxing and water quenching or air cooling. Thermal analysis results show that with increas...; 关键词：fluxing BULK metallic GLASS BINARY alloys GLASS FORMING ability UNDERCOOLED liquid

高Cu高强Zr基块体非晶合金的制备与力学性能(英文)被引量：3: 《稀有金属材料与工程》2008年第2期320-324,共5页张翠梅惠希东刘雄军陈国良; National Nature Science Foundation of China(50431030and50471097); National Basic Research Program of China(2007CB613901); 利用铜模铸造的方法制备了(Zr41.2Ti13.8Ni10Be22.5)1-x/87.5Cu12.5+x (x=1.6,6,11.2)块体非晶合金及其复相组织,分析了合金的相组成、热稳定性、力学性能及断口形貌。结果表明:随着铜含量的不断增多,尽管过冷液相区(△Tx)逐渐增大,但...; 关键词：ZR基块体非晶合金玻璃形成能力压缩断裂强度

国家自然科学基金(50431030)