锻造变形方式对叶片钢1Cr12Ni2Mo2VN横向冲击韧性的影响  

Effect of Forging Method on Horizontal Impact Toughness of Blade Steel 1Cr12Ni2Mo2VN

作　　者：陈列[1] 曹小军[1] 佐辉[1] 钱才让 刘雅政[2] 李俊儒[2] 甄建才[1] 晁智勇[1] 

机构地区：[1]西宁特殊钢股份有限公司,西宁810005 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《特殊钢》2015年第2期28-31,共4页Special Steel

基　　金：国家(863计划)课题资助项目(2012AA03A502)

摘　　要：分析了常规锻造-拔长,镦粗-拔长,镦粗-拔长-镦粗-拔长,镦粗-换向拔长4种锻造方式对叶片钢1Cr12Ni2Mo2VN(%:0.10C,0.17Si,0.74Mn,0.014P,0.002S,11.8Cr,2.43Ni,1.65Mo,0.32V,0.035 2N)2.5t电渣锭锻造成Φ220 mm棒材横向冲击韧性的影响。结果表明,单道次大压下量的镦拔锻造及镦拔次数的增加可显著提高叶片钢的横向冲击韧性,2镦2拔后的棒材经1050℃1h油冷,660℃2h空冷后的横向冲击功为141 J,横纵向冲击值比可达90%以上,组织均匀,晶粒细化。The effect of four forging methods i.e.conventional forging-stretching,upsetting-stretching,upsettingstretching-upsetting-stretching and upsetting-changing direction stretching on horizontal impact toughness of φ200 mm bar products forged from 2.5 t ESR ingot of blade steel lCrl2Ni2Mo2VN（/%：0.10 C,0.17 Si,0.74 Mn,0.014 P,0.002 S,11.8Cr,2.43 Ni,1.65 Mo,0.32 V,0.035 2N） has been analyzed.The results show that the upsetting-stretching forging with single pass large reduction and increasing upsetting-stretching forging times are available to obviously increase the horizontal impact toughness of blade steel;with upsetting-stretching-upsetting-stretching process the horizontal impact energy of bar product heated at 1 050 ℃ for 1 h,oil cooling and at 660 ℃ for 2 h,air cooling is 141 J,the ratio of horizontal and longitudinal impact energy is more than 90%,and steel structure is uniformity with finer grains.

关 键 词：叶片钢1Cr12Ni2Mo2VN 镦拔锻造 横向冲击韧性 

分 类 号：TG316[金属学及工艺—金属压力加工] TG142.1[一般工业技术—材料科学与工程]