国家自然科学基金(50974037)

作品数：10被引量：24H指数：3
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相关作者：崔建忠张志强乐启炽邵志文赵根发更多>>
相关机构：东北大学沈阳理工大学更多>>
相关期刊：《东北大学学报（自然科学版）》《铸造》《Transactions of Nonferrous Metals Society of China》《特种铸造及有色合金》更多>>
相关主题：ULTRASONICMECHANICAL_PROPERTIESNUMERICAL_SIMULATIONMAGNESIUM_ALLOYGRAIN_REFINEMENT更多>>
相关领域：金属学及工艺一般工业技术冶金工程更多>>
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Numerical simulation of acoustic pressure field for ultrasonic grain refinement of AZ80 magnesium alloy被引量：6
《Transactions of Nonferrous Metals Society of China》2011年第11期2476-2483,共8页邵志文 乐启炽 张志强 崔建忠 
Projects (2007CB613701,2007CB613702) supported by the National Basic Research Program of China;Projects (50974037,50904018) supported by the National Natural Science Foundation of China;Project (NCET-08-0098) supported by the Program for New Century Excellent Talents in University of China
Ultrasound with different intensities was applied to treating AZ80 alloy melt to improve its solidification structure.The average grain size of the alloy could be decreased from 303 to 148 μm after the ultrasound wit...
关键词：numerical simulation acoustic pressure ultrasonic treatment grain refinement magnesium alloy 
镀锌液的组元活度对镀液呈色特点的影响
《东北大学学报（自然科学版）》2011年第7期972-975,共4页乐启炽 崔建忠 
国家自然科学基金资助项目(50974037)
热镀锌液中适量添加过渡元素并通过镀后冷却条件控制,可在热镀钢板或钢构上直接获得具有特定色彩的镀锌层,是一种有应用前景的新工艺.从热力学角度理解热镀层呈色的机理与特点将有助于镀液组成的进一步优化.用Miedema模型、Tanaka关系...
关键词：热镀锌 镀液组成 浸镀温度 呈色 活度 
Structure and mechanical properties of AZ31 magnesium alloy billets by different hot-top semi-continuous casting technology被引量：1
《Rare Metals》2011年第4期414-418,共5页ZHANG Zhiqiang LE Qichi CUI Jianzhong 
supported by the Major State Basic Research Development Program of China (Nos. 2007CB613701 and 2007CB613702);the National Natural Science Foundation of China (Nos. 50904018, 51004032 and 50974037);the Program for New Century Excellent Talents in Chinese Universities (No. NCET-08-0098);the Fundamental Research Funds for the Central Universities of China (Nos. N090409002 and N090209002);the China Postdoctoral Science Foundation (No. 20100471468)
AZ31 alloy billets of 200 mm in diameter were produced by three different processes of conventional direct chill （DC） casting, low-frequency electromagnetic casting （LFEC） and low-frequency electromagnetic vibrati...
关键词：magnesium alloys electromagnetic field microstructure MACROSEGREGATION mechanical properties CASTING 
镁合金熔体中超声传播的数值模拟被引量：3
《铸造》2011年第3期271-275,共5页邵志文 乐启炽 张志强 崔建忠 
国家重点基础研究发展计划项目(2007CB613701);国家自然科学基金资助项目(50974037)
根据声波的折反射原理,分析和讨论了超声在变幅杆与镁合金熔体界面间的传播情况。在此基础上,分别采用积分法和有限元法对镁合金熔体中超声传播情况进行了数值模拟,由此给出了超声在镁合金熔体中的声压及声强特征量的分布。并且探讨了...
关键词：镁合金熔体 超声 数值模拟 
DC casting of light alloys under magnetic fields被引量：2
《Transactions of Nonferrous Metals Society of China》2010年第11期2046-2050,共5页崔建忠 张志强 乐启炽 
Project(2005CB623707) supported by the National Basic Research Program of China; Projects(2007CB613701 and 2007CB613702) supported by the National Key Basic Research Program of China;Projects(50974037,51004032 and 50904018) supported by the National Natural Science Foundation of China;Project(NCET-08-0098) supported by the New Century Excellent Talents in University,Ministry of Education,China;Project(20100471468) supported by China Postdoctoral Science Foundation
The working principle of LFEC（Low frequency electromagnetic casting） process developed in Northeastern University, China was introduced and the metallurgical results of LFEC were discussed according to the casting p...
关键词：low frequency electromagnetic field light alloy DC casting grain refinement 
Microstructures and mechanical properties of Mg-2%Zn-0.4%RE alloys被引量：2
《Transactions of Nonferrous Metals Society of China》2010年第B07期352-356,共5页乐启炽 张志强 邵志文 崔建忠 谢一 
Projects(2007CB613701; 2007CB613702) supported by the National Basic Research Program of China;Project(NCET-08-0098) supported by the Program for New Century Excellent Talents in University;Project(50974037) supported by the National Natural Science Foundation of China;Project(90209002) supported by the Special Fund for Basic Scientific Research of Central Colleges in China
The solidification microstructures and hardness of Mg-2%Zn (mass fraction) based alloys with addition of 0.4%Ce, 0.4%Gd, 0.4%Y or 0.4%Nd (mass fraction) were investigated, and the effects of the rare earth elements on...
关键词：rare earth Mg-2%Zn alloy microstructure mechanical properties 
Direct-chilling casting of Mg alloy under electromagnetic and ultrasonic combined field被引量：2
《Transactions of Nonferrous Metals Society of China》2010年第B07期297-305,共9页崔建忠 张志强 乐启炽 
Projects(2007CB613701, 2007CB613702) supported by the National Basic Research Program of China;Projects(50974037, 50904018) supported by the National Natural Science Foundation of China;Project(NCET-08-0098) supported by New Century Excellent Talents in Chinese University;Project(N90209002) supported by the Special Foundation for Basic Scientific Research of Central Colleges
The effects of low frequency electromagnetic (LFEC) field and ultrasonic (US) field on the microstructures, macrosegregation of alloying elements and the mechanical properties of DC cast AZ80 alloy were studied. The r...
关键词：low frequency electromagnetic field ultrasonic field Mg alloy DC casting 
Effect of high-intensity ultrasonic field on process of semi-continuous casting for AZ80 magnesium alloy billets被引量：2
《Transactions of Nonferrous Metals Society of China》2010年第B07期376-381,共6页张志强 乐启炽 崔建忠 
Projects(2007CB613701,2007CB613702)supported by the National Basic Research Program of China;Projects(50974037,50904018)supported by the National Natural Science Foundation of China;Project(NCET-08-0098)supported by New Century Excellent Talents in University of China;Projects(N09040902,N090209002)supported by the Special Foundation for Basic Scientific Research of Central Colleges
Under the high-intensity ultrasonic field,AZ80 magnesium alloy was semi-continuously cast.The effects of ultrasonic intensity on the as-cast microstructures and mechanical properties were investigated.The results show...
关键词：magnesium alloy ultrasonic field semi-continuous casting MICROSTRUCTURE mechanical properties 
Numerical simulation of standing waves for ultrasonic purification of magnesium alloy melt被引量：3
《Transactions of Nonferrous Metals Society of China》2010年第B07期382-387,共6页邵志文 乐启炽 崔建忠 张志强 
Projects(2007CB613701,2007CB613702)supported by the National Basic Research Program of China;Projects(50974037,50904018)supported by the National Natural Science Foundation of China;Project(NCET-08-0098)supported by the Program for New Century Excellent Talents in University of China
It was attempted to enhance and accelerate the separation of oxidation inclusions from magnesium alloy melt by virtue of ultrasonic agglomeration technology.In order to investigate the feasibility and effectiveness of...
关键词：magnesium alloy melt PURIFICATION standing waves numerical simulation 
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