Understanding of the Chip Formation Process of Til5V3Al3Sn3Cr Alloy
Titanium alloys like Ti 15V 3Al 3Sn 3Cr,a precipitation hardenable metastable β-titanium alloy,are widely used in aerospace applications. Machining of Ti 15V 3Al 3Sn 3Cr,however,is difficult and expensive as its machinability is extremely poor. A thorough understanding of the chip formation process of Ti 15V 3Al 3Sn 3Cr is needed to improve related metal cutting operations. Within the current study, the chip formation process of Ti 15V 3Al 3Sn 3Cr has been investigated. Chips from different material states have been produced in orthogonal cutting experiments using a wide range of cutting speeds and cutting depths. The chips were analyzed by means of optical microscopy, scanning electron microscopy (SEM),atomic force microscopy (AFM),X-ray diffraction (XRD) and nanoindentation measurements with respect to microstructural changes compared to the base material. During the experiments,depending on the cutting conditions, continuous or segmented chips were formed in which the segments were separated by a so-called shear band, a narrow zone showing a texturized, heavily deformed, nano-crystalline microstructure. In this paper,the process of shear band formation and possibilities to improve machining of Ti 15V 3Al 3Sn 3Cr are discussed.
Machining titanium alloys chip analyses Ti 15V 3Al 3Sn 3Cr nanoindentation
Pawel Rokicki Kai Nowag Lenka Fusova Zdenek Spotz Karel Saksl Carsten Siemers
Slovak Academy of Sciences,Institute of Materials Research,Watsonova 47,040 01 Kosice,Slovakia,pawel Swiss Federal Laboratories for Materials Testing and Research,Feuerwerkerstrasse 39,3602 Thun,Switze Technische Universitdt Braunschweig,Institut fuer Werkstoffe,Langer Kamp 8,38106 Braunschweig,German
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
714-718
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）