Effects of Severe Plastic Deformation on Grain Refinements and Fatigue Performance of the Metastable Beta-Titanium Alloy TIMETAL LCB
The effect of severe plastic deformation by rotary swaging on microstructure and resulting tensile properties as well as fatigue performance of TIMETAL LCB will be presented. Swaging to various degrees of deformation was performed at an elevated temperature of T=660°C. Part of the swaged material was annealed at T=760℃ to result in a fully recrystallized microstructure with about 20％ primary alpha particles. This material was tested with or without an additional final heat treatment at 540℃for 8 hours. Compared to the asreceived condition,swaging alone already resulted in marked increases in yield stress and tensile ductility. Aging of the recrystallization annealed material resulted in increases in Youngs modulus,yield stress and tensile strength while tensile ductility showed a significant drop. Best fatigue performance in combination with a low Youngs modulus was observed in the swaged conditions without any further heat treatments.
TIMETAL-LCB rotary swaging grain refinements fatigue performance
Jamal Atoura Jana Smilauerova Lothar Wagner
Institute of Materials Science and Engineering ,Clausthal University of Technology 38678 Clausthal-Z Department of Physics of Materials,Charles University ,CZ-121 16 Prague,Czech Republic
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
901-904
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）