|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Technical Division Student Poster Competition
||SPG-25: Effect of Milling Time on Morphology and Properties of a New Mechanical Alloyed Fe-base ODS Alloy Powder
||Xu Haijian, Lu Zheng, Wang Dongmei, Liu Chunming
|On-Site Speaker (Planned)
Fe-base oxide dispersion strengthened (ODS) alloys are the leading candidates of fuel cladding for Generation IV nuclear reactors due to their excellent properties such as excellent radiation tolerance and high-temperature creep strength. Mechanical milling with the aim of a fine dispersion of oxides in the metal matrix becomes the main process for the production of ODS alloy. In order to clarify the influence of milling time on the precursor powders for Fe-base ODS alloy with nominal compositions (wt.%): Fe-15Cr-2W-0.3Ti-0.3Zr-0.3Y2O3, the morphology and properties of mechanical alloying (MA) powders with different milling time were investigated. It was found that the powder was fractured and welded with rotation and vibration of container during mechanical milling. The mean powder size increased (0-1h) initially then decreased (2-60h). Extending milling time to 70h, the mean powder size increased again. The Vickers-hardness increased rapidly at the initial stage of milling, following reached a saturation value.
||Definite: None Selected