Phase-diagram study of alloys in the iron-chromium-molybdenum-nickel system

Abstract

Alloys in the iron-chromium-molybde num-nickcl syste m were examined after qu enching from 2,200, 2,000, 1,800, 1,650, and 1,500 F. Composit ional l imi ts of s tability of se ven phases were summarized in diagram s. F e, Mo was foun d. to be a stable phase; and a ternary phase, not previou sly r eported, was identifi ed to hav e the approximate composition of 4 p ercen t of chromium, 53 p ercent of iron, and 43 p er ce nt of molybdenum. T An1-!,; 1. N{anufacturer and chemical analyses of metal powders lVrctal powder I Ma nu facturer I C hem ieal a nalysis % i\t(ol ybcl cnum ___ Johnsan, ]Vrat h (' ~r & 00 _ 99.9 min im ulll . .1)0 _________ _ C harl es I fard y, In c ___ 99.9 minim ulll. i'> ickcL _________ Interna tiona l N ickel s pee trogmghic m ethod: 0.01 Co., co urtesy of A I, 0.00] 0, 0.001 C u, 0.1 FranciS B. F oley. Fe, 0.00 ] M.g, 0.001 Mil, 0.001 Pb, 0.01 S i. ])0 __ ----____ l )i,c.: intcgrati ng IV[ eta l S pec trogra phic method: 0. 1 Co . A ], 0.001 Ca, 0.01 Cr, 0. 1 C u ,O.O ] M g, 0.001 Pb,O.OI rl' i. C hern ieal methods: Chromi uln ______ Elect ro M eta llu rgica l 0.12 Co, 0.09 F e, 0.06 S i. C lwnical methods : 0.01 C, Co., cour tC'sy of 0.03 Fe, 0.01 Cu, 0.0 1 Pb, R ussell Franks. 0.0:!3 S, 0.5<1 0 , 0.0]2 J[ , 0.008 N.