变形制度对低碳锰钢组织性能的影响.pdfVIP

17 3 Vo l17 N o3 2 0 0 9 6 MATER IALS SCIENCE TECHNOLOGY Jun. , 2009 1 1 1 2 3 3 李 龙, 唐正友 , 丁 桦 , 杜林秀 , 宋红梅 , 郑 芳 ( 1. , 11000 , Em ai:l longli2002@ mai.l edu. cn; 2. , 11000 ; 3. , 201900) : 为了获得细晶铁素体/贝氏体的复相组织, 通过控轧控冷工艺研究了低碳锰钢在奥氏体 变形时变 形量终轧温度和卷取温度对组织演变和力学性能的影响规律. 研究表明, 增加变形量( 对应道次间隔时间 缩短) 可以细化铁素体晶粒, 但当终轧温度降低到 800 时, 变形量的增加以及开冷温度的降低不利于贝氏 体组织的获得. 通过调整变形量终轧温度可开冷温度并适当降低卷取温度, 可使实验钢获得晶粒尺寸约为 5 m 的铁素体和 10% ~ 20% 的贝氏体组织, 低碳锰钢强塑性能良好. : 低碳锰钢; 变形量; 终轧温度; 贝氏体; 力学性能 : TG1 21 : A : 1005- 0299( 2009) 03- 0373- 0 Influences of deform ation param eters on m icrostructures and m echan ical prop erties of low carbon m anganese steel 1 1 1 2 3 3 LI Long, TANG Zhengyou , D ING Hua, DU L inxiu , SONG Hongmei, ZHENG Fang ( 1. School ofM aterials and M etallu rgy, Northeastern Un ivers ity, Shenyang 11000 , China, Em ai:l longli2002@ m ai.l edu. cn; 2. The StateK ey Lab. of Rolling and Au tom ation of Northeastern Un iversity, Shenyang 11000 , China; 3. Baosteel Technology Center, Baoshan Iron S teel Group Co. , Shanghai 201900, Ch ina) Abs tract: In order to obtain the finegrained ferrite/bainite dup lex m icrostructure, influences of deformation amount, fin ish rolling temperature and coiling temperature on m icrostructures andm echan ical properties of low carbon m anganese steelw ere studied by thermomechan ical controlled process (TMCP) expermi ents. The re su lts ind icate that the increase in deformation amount refines the ferrite grain but retards the formation of bain ite at the fin ish rolling temperature of