Alloy fabricated by arc melting consists of continuous nbssi matrix and dispersive distributed nb particles . the metastable nbasi phase is found to have a tetragonal crystal structure with space group p42 / n and lattice parameters a = 1 . 021nm , c = 0 . 519nm O 0 )金屬間化合物的顯微組織由連續(xù)的nb3si基體、彌散分布的nb粒子組成,其中亞穩(wěn)態(tài)相nb3si為四方結(jié)構(gòu),空間群p42 n ,點(diǎn)陣常數(shù)a l