Application of cold drawn lamellar microstructure for developing ultra-high strength wires
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.
lamellar composite strengthening mechanism wire drawing amorphous phase mechanical property
S.Goto R.Kirchheim T.Al-Kassab C.Borchers
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,Ger
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）