高等级管线钢的超细晶粒控制.pdfVIP

2011 2 Feb. 2011 19 1 HENAN M ETALLURGY V o.l 19 N o. 1 * 1, 2 1 朱国辉 毛卫民 ( 1. ; 2. ) , CSP X 100 /X 120 CONTROL OF ULTRA- F INE GRA IN IN H I GH GRADE P I PEL INE STEEL S 1, 2 1 Zhu Guohu i M ao W emi in ( 1. Un iv ers iy o f Science and T echno logy Beijing; 2. A nhui U niversi y of T echno logy) AB STRACT F undamen a l o f ma eria ls science and key echno logy in con ro lling u l ra- f ine g ra in size in high s reng h p ipeline s eels w as discu ssed. The pr inciple, process ing and applicab le in indu s ries for he con ro l of ul ra- fine gra in s ize by m eans of s ra in induced phase ransform a ion or u l ra- f ine au s en i e enhanced phase ransform a ion w ere ana ly zed. T he resu l s show ha he key for con ro lling gra in size is enough large s rain accumu la ion in processing. In indu s ries, h is larg e s ra in accumu la ion could on ly be ob a ined pass by pass in m ul i- pass ro lling. T he key for accum ula ing large enough s ra in in m ul i- pass ro lling is o suppress he s a ic recrys a lliza ion dur ing pass in erva ls. The prelmi inary discu ssion on developing echno logy fo r pipe line s ee l produc ion by CSP processing w as conduc ed. The m icro s ruc ura l charac erizing o f u l ra- f ine ba in i e as w ell as i s ref in ing m echan ism s w as ques ioned. K EY WORD S pipe line s ee ls u l ra- fine gra in defo rma ion and recrys a lliza ion phase ransform a ion m icro s ruc ur a l charac er iza ion 0 ;