Phase Constitution and Heat Treatment Behavior of Ti-Mn and Ti-Mn-Al Alloys
Titanium exhibits many attractive properties and is considered ubiquitous, having the 9th-highest Clarke number among all elements. However, titanium is classified as a rare metal because its current refinement process is non-continuous and less productive than the extraction processes used to extract iron and aluminum. Furthermore, the principal beta-stabilizing elements for titanium can be very expensive,making many titanium alloys expensive. Manganese,a beta stabilizer for titanium alloys,is also considered ubiquitous, having the llth-highest Clarke number among all elements. Once a new continuous-refinement process for titanium is developed, a very important subsequent step will be to investigate the properties of Ti-Mn alloys in order to develop new alloys composed of ubiquitous metals. This study investigated the effect of aluminum addition on phase constitution,heat treatment behavior,and tensile properties of Ti-10 mass％ Mn-Al alloys through electrical resistivity,Vickers hardness and X-ray diffraction (XRD) measurements and tensile tests. In all STQed alloys,only beta phase was identified by X-ray diffraction. Resistivities at RT and LN increased monotonously with Al content. Upon isothermal aging at 673K,isothermal omega phase precipitated and then alpha phase precipitated in 0 and 1. 5A1 alloys, whereas only alpha phase precipitated in 3. 0 and 4. 5A1 alloys. In the case of Al addition in excess of 3mass％ .isothermal omega phase precipitation was suppressed. In STQed 1. 5A1 alloy for tensile test,about 95OMPa and about 20％ were obtained as tensile strength and elongation,respectively.
Ubiquitous element isothermal aging athermal omega isothermal omega alpha phase mechanical properties
M. Ikeda M. Ueda T. Kinoshita M. Ogawa M. Niinomi
Kansai University, Suita, Osaka, Japan Graduate student, Kansai University, Suita,Osaka, Japan Daido Steel Co. ,Ltd. ,Nagoya,Aichi, Japan Research Institute of Metals ,Tohoku University ,Sendai,Miyagi, Japan
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
850-852
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）