国家自然科学基金(51235010)

作品数:26被引量:188H指数:9
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相关作者:湛利华黄明辉贾树峰阳凌王萌更多>>
相关机构:中南大学西北工业大学北京宇航系统工程研究所香港理工大学更多>>
相关期刊:《锻压技术》《中国有色金属学报》《Journal of Materials Science & Technology》《塑性工程学报》更多>>
相关主题:蠕变时效蠕变2219铝合金CREEP时效更多>>
相关领域:金属学及工艺一般工业技术航空宇航科学技术自然科学总论更多>>
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Non-isothermal creep age forming of Al-Cu-Li alloy:Experiment and modelling被引量:2
《Chinese Journal of Aeronautics》2023年第5期566-581,共16页Changhui WU Heng LI Tianjun BIAN Chao LEI Liwen ZHANG 
supported by the National Natural Science Foundation of China(Nos.51905424,51522509,and 51235010).
Non-isothermal Creep Age Forming(CAF),including loading,heating,holding,cooling and springback stages,is an advanced forming technique for manufacturing high performance large integral panels at short production perio...
关键词:Al-Cu-Li alloy Creep aging forming MICROSTRUCTURES SPRINGBACK Mechanical properties Thickness 
Microstructures and properties evolution of Al-Zn-Mg-Cu alloy under electrical pulse assisted creep aging被引量:1
《Advances in Manufacturing》2022年第4期596-609,共14页Tian-Jun Bian Heng Li Chao Lei Chang-Hui Wu Li-Wen Zhang 
The research is supported by the Natural Science Foundation of China(Grant Nos.51905424,51522509,51235010)。
Creep aging(CA)is a promising forming technology for integral panels with complex structures.However,how to balance excellent corrosion resistance and strength is still a challenge for CA parts.By synchronously applyi...
关键词:Creep aging(CA) Electrical pulse RETROGRESSION Corrosion HARDNESS Al-Zn-Mg-Cu alloy 
Advances and challenges on springback control for creep age forming of aluminum alloy被引量:7
《Chinese Journal of Aeronautics》2022年第10期8-34,共27页Liwen ZHANG Heng LI Tianjun BIAN Changhui WU Yang GAO Chao LEI 
financial support from the Key Program of the National Natural Science Foundation of China (No.51235010);the National Science Fund for Excellent Young Scholars (No.51522509);the National Natural Science Foundation of China (NO.51905424)
Creep age forming(CAF)is an advanced forming technology that combines creep deformation and age hardening processes.When compared with the conventional forming technologies including roll bending and shot-peen forming...
关键词:Aluminum alloy Creep age forming Integrated manufacturing Springback compensation Tool design 
5A90铝锂合金的蠕变时效行为及机理被引量:2
《上海航天(中英文)》2020年第3期22-31,共10页傅进 雷超 边天军 郜阳 曹晓 任斐 李恒 
国家自然科学基金资助项目(51235010,51522509,51905424)。
研究了在不同时效温度和应力水平的影响下,5A90铝锂合金的蠕变时效行为和微观组织及力学性能演变规律和机理。实验采取先加载后加热的方法,即考虑了蠕变时效非等温阶段。结果表明:在恒定外加应力175MPa下,加热至100、130和160℃时的非...
关键词:5A90铝锂合金 蠕变时效 蠕变变形 沉淀相 位错 力学性能 
Dynamic interplay between dislocations and precipitates in creep aging of an Al-Zn-Mg-Cu alloy被引量:4
《Advances in Manufacturing》2019年第1期15-29,共15页Heng Li Tian-Jun Bian Chao Lei Gao-Wei Zheng Yu-Fei Wang 
the National Natural Science Foundation of China for Key Program (Grant No. 51235010);the National Science Fund for Excellent Young Scholars (Grant No. 51522509);the Marie Curie International Research Staff Exchange Scheme (IRSES, MatProFuture, Grant No. 318968) within the EC 7th Framework Programme (FP7).
Abstract Creep age forming (CAF) is an advanced forming technology used for manufacturing large complex integrated panel components. However, in creep aging (CA), unlike in sole creep or aging procedure, the dislocati...
关键词:Creep aging (CA) DYNAMIC INTERPLAY Dislocation PRECIPITATE PRE-DEFORMATION AL-ZN-MG-CU alloy 
Formation of a new intermediate phase and its evolution toward θ’ during aging of pre-deformed Al-Cu alloys被引量:2
《Journal of Materials Science & Technology》2019年第5期885-890,共6页Peipei Ma Chunhui Liu Ziyao Ma Lihua Zhan Minghui Huang 
financial support from the National Natural Science Foundation of China (Nos. 51601060, 51235010, 51671086);Natural Science Foundation of Hunan Province (No. 2018JJ3655);the Major Project for Defense Basic Preresearch Program;the National Key R&D Program of China (No. 2017YFB0306300);the National Key Basic Research Development Plan Funded Project of China (No. 2014CB046602);the Innovationdriven Plan in Central South University (No. 2015CX002);the Science and Technology Plan in Hunan Province (No. 2016RS2015);the Fundamental Research Funds for the Central Universities of Central South University (No. 1053320180612)
The frequent occurrence of hitherto unknown phase Pre-θ′-2 and unusual 1.5 cθ′thick θ′precipitate was observed by atomic-resolution scanning transmission electron microscopy in the well-studied Al-Cu alloys. Thi...
关键词:Aluminum ALLOYS PRECIPITATION DEFORMATION Age-harde ning 
电塑性及电流辅助成形研究动态及展望被引量:25
《航空学报》2018年第1期15-32,共18页丁俊豪 李恒 边天军 马俊 
优秀青年科学基金(51522509);国家自然科学基金重点项目(51235010);凝固技术国家重点实验室(西北工业大学)自主研究课题(KP201608)~~
航空航天等领域对高性能、轻量化和高功效构件精确成形成性的要求,迫切需要发掘和提高难变形材料的成形潜力。金属等材料在电流辅助加载时塑性提高和变形抗力降低的电塑性效应(EPE),与传统塑性加工技术相结合发展出的电流辅助成形(EAF)...
关键词:电塑性效应 电流辅助成形 难变形材料 成形极限 塑性加工 
2A12硬铝合金板热拉深成形极限图研究被引量:10
《锻压技术》2018年第1期170-176,共7页刘健 申儒林 湛利华 杨有良 胡立彬 李先梦 
国家重点研发计划(2017YFB0306300);国家自然科学基金重点项目(51235010);中南大学研究生自主探索创新项目(1053320170677)
通过自主设计的热拉深成形专用模具,进行了在350~450 ℃范围内的2A12硬铝合金极限应变实验,并获得了其在该温度范围内的成形极限图,进而分析了在热拉深成形过程中温度对2A12硬铝合金成形极限的影响规律.基于MSC.MARC软件,分别应用最大...
关键词:2A12硬铝合金 热拉深 成形极限图 最大载荷判断法 应变路径法 MSC.MARC 
高强铝合金板材电脉冲辅助时效热处理工艺研究被引量:2
《航空制造技术》2017年第23期42-47,53,共7页马云龙 湛利华 徐永谦 童璨瑜 谭景升 
国家重点研发计划资助项目(2017YFB0306300);国家自然科学基金重点基金资助项目(51235010);国家973计划资助项目(2014CB046602)
以2219铝合金轧制板材为研究对象,通过仿真分析、电脉冲辅助时效热处理试验、拉伸力学性能测试和透射电镜观察,系统研究了低密度电脉冲对板材时效热处理过程中电流密度分布、焦耳热效应及其时效后的力学性能与析出相微观组织的影响。结...
关键词:时效 电脉冲 2219铝合金 电流密度 焦耳热效应 力学性能 微观组织 
2A12硬铝合金热拉伸流变行为及本构建模被引量:5
《锻压技术》2017年第4期159-164,193,共7页李先梦 湛利华 申儒林 郭亮 
国家自然科学基金资助项目(51235010);湖南省自然科学基金资助项目(13JJ2009);中南大学"创新驱动计划"项目(2015CX002);高等学校博士学科点专项科研基金(20120162110003)
在变形温度350~500℃、应变速率0.01~1 s^(-1)条件下,利用Gleeble-3500热模拟实验机对2A12硬铝合金板进行热拉伸实验。结果表明:峰值应力随温度升高而减小,随应变速率提高而增大;随着应变速率减小,断裂总伸长率升高,而均匀伸长率降低;...
关键词:2A12硬铝合金 峰值应力 断裂总伸长率 均匀伸长率 本构模型 
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