Application of cold drawn lamellar microstructure for developing ultra-high strength wires

作     者：S. Goto R. Kirchheim T . Al-Kassab C. Borchers 

作者机构：Faculty of Engineering and Resource Science Akita University Tegata Gakuencho Akita 010-8502 Japan Institute fuer Materialphysik University of Goettingen Friedrich-Hund-Platz 1 D-37077 Goettingen Germany 

出 版 物：《中国有色金属学会会刊：英文版》 (Transactions of Nonferrous Metals Society of China)

年 卷 期：2007年第17卷第6期

页      面：1129-1138页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Project supported by the Alexander von Humboldt Foundation of Germany 

主　　题：薄片复合物 金属丝 加固装置 机械性质 

摘      要：Composite materials having lamellar structure are known to have a good combination of high strength and ductility. They are widely used in the fields of automobiles, civil engineering and construction, machines and many other industries. An application of lamellar microstructure for developing ultra-high strength steel wires was studied and discussed. Based on the experimental results, the relationships between the strength increase and microstructure development during the cold wire drawing were studied to reveal the strengthening mechanism. As cold drawing proceeds, the wire strength extremely increases, the microstructure changes from large single crystal lamellar structure to very fine polycrystalline lamellar one which has nano-sized grains, high dislocation density and amorphous regions. From the results obtained, it is concluded that heavy cold drawing technique is an effective method for lamellar composite to get high strength wires. Furthermore, formation process of the best microstructure for producing the ultra-high strength wires was also discussed.