Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Aeronautica Et Astronautica Sinica》 1987-07
Add to Favorite Get Latest Update

A STUDY OF THE SUPERPLASTICITY OF LF6 ALUMINIUM ALLOY

Luo Zijian and Guo Naicheng (Northwestern Polytechnical University)Gong Quanyuan and Cao Yahui (Huanghe Machinery Manufacturing Factory)  
Tn this paper the superplasticity of cold-rolled sheet metal of LF6 aluminium alloy was studied. An extremely significant superplastic effect can be attained in cold-rolled condition without any special pre-treatment. Total elongation as high as 463%. can be achieved under the following conditions:490℃ and 3.33 ×10-4s-4.The corresponding strain rate sensitivity index m = 0.68 and flow stress o=2.8 MPa. As compared with the da- ta available in the literature, the above results are in the lead at home and abroad. The results of mechanical tests and metallographic examinations indicated that the presence of the particles of second phases such as B(Mg2Al3), MnAl6. and TiAl3 leads to the formation of fine and stable grains necessary for achieving superplasticity. The most probable deformation mechanisms for superplastic flow of LF6 aluminium alloy are grain boundary sliding accommodated by the sliding within grains. The results presented in this paper may pave the way for incorporating the pre-tre-amment necessary for superplastic forming of certain alloys in the processing of sheet products. As a result, the superplastic forming processes can be simplified and the application of the new technology to industry can be expanded. The achievements of this study have been put into practice and the results were excellent. The authors have made some suggestions to the metallorgical department in order to popularize the achievements as early as possible.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【References】
Chinese Journal Full-text Database 5 Hits
1 LIN Mu-sen*,PANG Bao-jun,ZHANG Wei,CHI Run-qiang(Hypervelocity Impact Research Center,Harbin Institute of Technology,Harbin 150001,Helongjiang,China);Experimental investigation on a dynamic constitutive relationship of 5A06 Al alloy[J];Explosion and Shock Waves;2009-03
2 Guo Nai-cheng, Luo Zi-jian (Faculty 402 ofNonhwestern Polytechnical University, Xi'an, 710072);A BACKWARD SIMULATION METHOD FOR SUPERPLASTIC BULGING OF THE CIRCULAR BLANK OF SHEET METAL[J];Acta Aeronautica Et Astronautica Sinica;1993-07
3 Wang Shuyun; Zhang Xiaobo; Cui Jianzhong; Zhang Caipei;Comparison on the Superplasticity or Two Al-Mg Alloys[J];HOT WORKING TECHNOLOGY;1997-01
4 Luo Zijian;Guo Naicheng;Gong Quanyuan;A General Method for Analysis of Pressure Forming of Viscoplastic Sheet Metal[J];Journal of Northwestern Polytechnical University;1987-04
5 Zhan Zhaolin (School of Mechanical engineering, YPU, Kunming, China, 650051);LD7 Aluminium Alloy Superplastic Study[J];JOURNAL OF YUNNAN POLYTECHNIC UNIVERSITY;1999-04
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Liu yiuwen Lin Wenjien Zhao Tinglian Zhou Dajieng(Jilin Institute of Technology)Li Eanren Sha Shauwen Wie Desheng(Wushi Power Machine Manufacaory);The Superplastic Effects and Dynamic Recrystal of Received LF6 AI-Alloy[J];;1984-04
2 XU Xiao chang 1, TAN Xiao qiong 2, TAN Yu hua 3(1.Mechanical Engineering Department Changsha Railway University, Changsha 410075, China; 2.Xiangtan Delicate Chemical Factory, Xiangtan 411100, China; 3.Mechanical Engineering Department Xiangtan Uni;Change of grain boundary morphology and influence of recrystallization in superplastic deformation[J];MATERIAL SCIENCE AND TECHNOLOGY;1999-04
3 BAI Zhen-hai, LUO Bing-hui, FAN Yun-qiang, XIE Shao-jun(Dept. of Materials Science and Engineering, CSU, Changsha 410083 , China; Institute of Technology Center South - West A-luminum Forming Plant, Chongqing,401326 China);A study on the efect of trace contents of Sc and Zr on microstructure and properties of Al - Mg alloys[J];Material Science and Technology;2002-03
4 Wang Lili and Hu Shisheng (University of Science and Technology of China);DYNAMIC STRESS-STRAIN RELATIONS OF AL ALLOY LF6R AND AL L4R UNDER HIGH STRAIN RATES[J];Acta Mechanica Solida Sinica;1986-02
5 ZHAO Hui-jie, HE Song, GENG Hong-bin(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China);Tensile properties and microstructure of LF6 alloy welded joint subjected to thermal cycling[J];Transactions of The China Welding Institution;2004-01
6 Long Nidong(The Air Force College of Engineering);STUDY ON FRACTURE OF SUPERPLASTIC DEFORMATION IN LF6[J];JOURNAL OF AERONAUTICAL MATERIALS;1997-02
7 XU Hai wei, CHENG Xiao? nong, XU Xiao? jing (School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China);The Status and Trend of Research on High Strain Rate Superplasticity of Al-Based Materials[J];Journal of Jiangsu University of Science and Technology;2002-03
8 XU Xiao chang 1,WU Chun 1,TAN Yu hua 2 (1 Electro mechanic Engineering College,Central South University,Changsha 410075,China; 2 Department of Mechanical Engineering,Xiangtan University,Xiangtan Hu'nan 411105,China);Effect of Strain Rate on Super-Plastic Deformation of LY12CZ Aluminum Alloy[J];Heat Treatment of Metals;2002-08
9 LIU Li-ming~(1),~() XIAO Yu-de~(2),SU Jie~(2),ZHAO Jun~(2),LI Wen-xian~(2)(1.College of Mechanical & Electrical,Northwestern Polytechnical University,Xi′an Shaanxi 710072,China; 2.College of Materials Science and Engineering,Central South University,Changsha Hu′nan 410083,China);Ultrafine Recrystallized Structure and Superplasticity of Al-5.6Mg-0.30Zr Alloy[J];Heat Treatment of Metals;2006-12
10 Song Yuquan Cheng Yongchun Liu Shumei (Jilin University);EXPERIMENTAL MEASUREMENT AND ELABORATE ANALYSIS OF STRAIN-RATE SENSITIVITY EXPONENT IN TENSILE FORMING[J];Chinese Journal of Mechanical Engineering;2001-04
【Secondary References】
Chinese Journal Full-text Database 7 Hits
1 Hu Yi(Hefei University of Technology Hefei 230009 );Study on the Technology of Laser Superplastic Shaping[J];CHINESE JOURNAL OF QUANTUM ELECTRONICS;1998-06
2 YAN Hong (Kunming metallurgy research Institute,Kunming,Yunnan 650031,China);1999 Annual Review of Metal Materials and Their Processing in Yunnan[J];YUNNAN METALLURGY;2000-02
3 ZHANG Xin-ming,YE Ling-ying,DU Yu-xuan,LUO Zhi-hui School of Materials Science and Engineering,Central South University,Changsha 410083,China;Particle stimulated nucleation of recrystallization in 01420 Al-Li alloy[J];Journal of Central South University(Science and Technology);2007-01
4 ZHANG Xin-ming1,2,YE Ling-ying1,2,LIU Ying-wei1,2,TANG Jian-guo1,2 (1. Educational Key Laboratory of Non-ferrous Metal Materials Science and Engineering, Central South University,Changsha 410083,China; 2. School of Materials Science and Engineering,Central South University,Changsha 410083,China);Effects of intermediate annealing and rolling on plastic failure and grain refinement of Al-Mg-Li alloy[J];Journal of Central South University(Science and Technology);2009-01
5 ZHANG Xin-ming1,2,YE Ling-ying1,2,LIU Ying-wei1,2,DU Yu-xuan1,2,LUO Zhi-hui1,2(1.Educational Key Laboratory of Non-ferrous Metal Materials Science and Engineering,Central South University,Changsha 410083,China;2.School of Materials Science and Engineering,Central South University,Changsha 410083,China);Formation mechanism of gradient-distributed particles and their effects on grain structure in 01420 Al-Li alloy[J];中南工业大学学报(英文版);2008-02
6 LIU Teng 1, LIU Bing 2, LEI Yi 1, LIU Zhi yi 1 (1. Department of Mechanical Engineering, University of Petroleum (East China), Dongying 257062, P.R.China; 2.Department of Applied Physics, University of Petroleum (East China), Dongying 257062, P.R.;Cavity behavior in superplasticity induced by dynamic recrystallization of Al-Mg alloy[J];The Chinese Journal of Nonferrous Metals;2000-06
7 YE Ling-ying,ZHANG Xin-ming,LIU Ying-wei,DU Yu-xuan,LUO Zhi-hui(School of Materials Science and Engineering,Central South University,Changsha 410083,China);Formation mechanism of layered grain structure during superplastic pre-treatment in 01420 Al-Li alloy[J];The Chinese Journal of Nonferrous Metals;2007-11
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved