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1、第 5卷第 3期 材null 料null 与null 冶null 金null 学null 报 Volnull5 Nonull3null l : 2006- 05- 29.null T e : (1980- ), 3 , a+ , v V 3 , E-mai:l dinghao0400731 sina. com; (1958- ), o , g , v q , p V 3 =2006年 9月 Journal ofMaterials andM etallurgy Sept. 20060null06C- 0null6Si- 1null5Mn- 0null6CrM M丁null 昊1, 唐正友1, 李
2、null 龙1, 王魁周1, 丁null 桦1, 2( 1. v null 8 , a+ 110004;2. v null A / # A 1 S E L i , a+ 110004)K null 1 : G leeble- 1500 / M E 0null06C- 0null6Si- 1null5M n- 0null6CrM M M M w L (CCTw L ). ; A F 4 , f 9 M F . T V , l 10null /sH , 9 F , f 8 8 s 4 f 9 F A ; 7 10 20null /sS = H , M M H f 8 8 s M t . CCTw
3、L V , L M f 8 _M 8 M 780 550null W , 2 20null /sS = V f 8 F .1 o M : M ; M ; E ; CCTw L m s | : TG 151null2null null D S M : Anull null c I | : 1671null6620( 2006)03null0203null05Study on continuous cooling transformation of dual phase steelwith 0null06C- 0null6Si- 1null5Mn- 0null6CrDINGHao1, TANG Z
4、hengnullyou1, LILong1, WANG Kuinullzhou1, DINGHua1, 2(1null SchoolofM aterials andM etallurgy, Northeastern University, Shenyang110004, China;2nullThe StateKey Labnull ofRolling and Automation ofNortheasternUniversity, Shenyang 110004, China)Abstract: The continuous cooling transformation curves wit
5、hout and with deformation of a dual phase steel( 0null06C- 0null6Si- 1null5M n - 0null6Cr) were studied by G leeble- 1500 thermal- mechanical simulationnullM icrostructureswere observed by using an optical m icroscope and the hardness of the specimens wasmeasurednull The results showed that the volu
6、me fraction of bainite and V ickers hardness increased obviouslywith the cooling rate increasingwhen the cooling rate was lower than 10null /s; while the volume fraction ofbainite ( both at undeformed and deformed states) and hardness tended to vary gently in the cooling raterange of10 20null /snull
7、 From CCT curves, it can be drawn thatnull null transformation temperature is between780 550null for the deformed steel and bainite can be gained in the cooling rate of 2 20null /snullKey words: dual phase steels; continuous cooling transformation; thermal- mechanical simulation;CCT curvenull null M
8、 ( dual phase steel) M 8 / f 8F F z ,F 1 f 8 F . I D : 1 DeCosmoM, GalantucciLM, TricaricoLnull Design of processparameters for dual phase steel production w ith strip rollingusing the finite- elementmethod J null Journal ofM aterialsProcessing Technology, 1999, 92- 93: 486- 493null 2 KotR A, Bramfi
9、tt B Lnull Fundamentals ofDual- Phase SteelsM null Warrendale, P A: M etallurgical Society of AIME, 1981null 3 KoniecznyAleksyAnull M ? N Jnull r nullW M , 2003, (1): 34- 38null 4 f , , null M ? Z J null) , 2001, 1: 5- 8null 5 Yan Bnull & M Jnull - L 6 r nullW M , 2003, (5): 32- 38null 6 m , nullM -
10、 8 M null :8 , 1988null 7 a null ) M null : , 1989null 8 S , null f 8 M w L M null : , 1988null( 202: ) I D 1 Lu K. Nanocrystalline metals crystallized from amorphoussolids: Nanocrystallization, structure, and properties J.M aterials Science and EngineeringR, 1996, 16: 161- 221. 2 GleiterH. Nanostru
11、ctured materials: basic concepts andm icrostructure J. ActaM aterialia, 2000, 48: 1- 29. 3 Valiev R Z, Islamgaliev R K, Alexandrov I V. Bulknanostructured materials from severe plastic deformation J.Progress inM aterials Science, 2000, 45: 103- 189. 4 Valiev R Z, Alexandrov I V. Nanostructured mater
12、ials fromsevere plastic deformation J. Nanostructured M aterials,1999, 12: 35- 40. 5 TsujiN, Ueji R, M inam ino Y. Nanoscale crystallographicanalysis of ultrafine grained IF steelfabricated byARB process J. ScriptaMaterialia, 2002, 47: 69- 76. 6 KamikawaN, TsujiN, M inam inoY. M icrostructure and texturethrough thickness of ultralow carbon IF steel sheet severelydeformed by accumulative roll- bonding J. Science andTechnology ofAdvancedMaterials, 2004, 5: 163- 172. 7 Han B Q, Yue S. Processing of ultrafine ferrite steels J.Journal of M ate
