公开(公告)号：US11359638B2

公开(公告)日：2022-06-14

申请号：US16636516

申请日：2018-10-31

申请人： HITACHI METALS, LTD.

发明人： Meichuan Chen ,  Tadashi Fujieda ,  Kousuke Kuwabara

IPC分类号： F04D29/02 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y40/20 ,  B22F3/24 ,  B22F9/08 ,  C22C30/00 ,  B22F10/20 ,  B33Y80/00 ,  B22F5/00

摘要： An object of the invention is to provide an alloy article that exhibits even better mechanical properties than conventional high entropy alloy articles without sacrificing high corrosion resistance thereof. An alloy article according to the invention comprises matrix phase crystal grains being equiaxed crystals with an average crystal grain size of 150 μm or less, the alloy article having a metallic composition including: Co, Cr, Fe, Ni and Ti, each within a range of 5 atomic % or more and 35 atomic % or less; Mo within a range of more than 0 atomic % and less than 8 atomic %; and a balance comprising inevitable impurities, wherein in the matrix phase crystal grains, ultrafine particles with an average particle size of 100 nm or less and oxide particles with an average particle size of 100 nm or less are dispersedly precipitated.