终锻温度和锻压比对贝氏体非调质钢铁素体析出的影响  

Influence of Finishing Forging Temperature and Forging Ratio on Precipitation of Ferrite in Non-Quenched and Tempered Bainitic Steel

作　　者：彭金明[1] 汪宏斌[1] 罗毅[1] 吴晓春[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《特殊钢》2009年第1期66-67,共2页Special Steel

基　　金：先进钢铁材料国家研究中心课题资助项目(D.09-0110-07-002)

摘　　要：研究了终锻温度810～960℃和锻压比3～6对贝氏体钢(%:0.16C、0.91Si、1.98Mn、1.03Cr、0.17Mo、0.065V、0.001Ti)铁素体析出的影响。结果表明,贝氏体钢锻造过程中的变形提高了钢中奥氏体至铁素体相变的临界温度;在终锻温度为810～820℃时,钢中产生变形诱导铁素体相变,当锻压比由3增至6时,铁素体的体积分数由1.8%增至9.6%,铁素体由针状趋于演变为块状;终锻温度为940～960℃时,钢中铁素体主要为针状,随着锻压比由3增至6,钢中铁素体体积分数由3.0%降至0.6%。Influence of finishing temperature 810 -960 ℃ and forging ratio 3 -6 on precipitation of ferrite in bainitic steel- 0. 16C, 0. 91Si, 1.98Mn, 1.03Cr, 0. 17Mo, 0. 065V, 0. 001Ti has been studied. Results showed that the critical temperature of phase transformation for austenite to ferrite increased by deformation of the bainitie steel during forging; with forging finishing at 810-820 ℃ the deformation induced ferrite precipitation occurred in steel and with increasing forging ratio from 3 to 6, the volume fraction of ferrite in steel increased from 1.8% to 9. 6% accompanied acicular ferrite evolving to massive ferrite ; and with forging finishing at 940 - 960 ℃, most of ferrite in steel was acicular, with increasing forging ratio from 3 to 6 the volume fraction of ferrite in steel decreased from 3.0% to 0. 6%.

关 键 词：贝氏体钢 锻压比 铁素体 析出 

分 类 号：TG316[金属学及工艺—金属压力加工]