Damping Capacity and Surface Hardness of Plasma Nitrided Ti-15Nb Alloy
The purpose of this study is to investigate the damping capacity and surface hardness of plasma nitrided Ti-15mass％Nb alloy with different plasma nitriding treatment process. In this experiments,material properties such as Youngs modulus,internal friction and micro Vickers hardness were measured,and X-ray diffraction profiles,optical microstructure and 3D laser microstructure were observed. In 723K plasma nitriding, there was little change in material properties. Titanium nitride layer was not recognized,but heat affected zone of about 18μm was observed in this microstructure. Inner side from there, the α martensite structure was remained. Although very high hardness of 1150HV0. 01 could be obtained, internal friction was decreased in 1023K plasma nitriding. Titanium nitride layer of about 2μm, nitrogen solubility zone and heat affected zone were observed in this microstructure. This heat affected zone was disappeared and the α martensite structure was reformed by the quenching. Further, high surface hardness and high internal friction could be achieved by quenching after the 1023K plasma nitriding.
α martensite internal friction Young s modulus damping alloy surface modification
Yoshikazu Mantani Sachio Nagata Kazuhiro Nakata
Suzuka National College of Technology ,Mie 510-0294 , Japan K. BRASH &Co. ,LTD. ,Osaka 541-0052, Japan Joiningand Welding Research Institute,Osaka University,Osaka 567-0047, Japan
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
888-891
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）