DOI码：10.1016/j.jnucmat.2022.154016
发表刊物：Journal of Nuclear Materials
关键字：ODS-Cu, Y2O3 sources, Cu6Y compound, Mechanical alloying
摘要：In order to reflect the superiority of using Cu 6 Y as the Y 2 O 3 source, three different Y sources addition, direct Y 2 O 3 by conventional mechanical alloying process, pure metal Y and Cu 6 Y compound by in-situ fabrication method, were compared in the ODS-Cu with 1.5 wt.% Y 2 O 3 . It was found that compared to Y 2 O 3 or pure metal Y, the brittle Cu 6 Y played the roles of both suitable Y precursor to enhance Y dis- solution and process control agent (PCA) to suppress the growth of mechanical alloying (MA) powders. The alloyed layer was thickened with the MA time, and the further MA gradually becomes difficult. It is inefficient to fully alloy the MA powders only by prolonging milling time. The samples by in-situ fab- rication method (Y and Cu 6 Y sourced) had more contaminations with Fe, because of the oxidation of milling mediums by Cu 2 O, which was used to oxide the Y precursors to form the Y 2 O 3 . The contami- nations contributed to the hard prior particles boundaries where fracture took place during the tensile tests, resulting in the poor tensile performance for the samples by in-situ fabrication method. Consider- ing that the Cu 6 Y sourced sample by in-situ fabrication method formed fine and high dense dispersive Y 2 O 3 particles with the size of 19 ±7 nm and a high number density of 1.8 ×10 21 /m 3 , it has a larger potential for improvement once the means to reduce Fe impurities and holes are developed.
第一作者：Bing Ma
论文类型：期刊论文
通讯作者：Laima Luo,Jing Wang
论文编号：154016
学科门类：工学
期号：571
是否译文：否
发表时间：2022-09-05
收录刊物：SCI