E36级船板钢正火工艺的研究.pdf

35 1 Vol1 35 No1 1 2010 1 HEAT TREATMENT OF METALS January 2010 E36 1 1 1 1 1 1 1 2 2 , , , , , , , , ( 11 上海大学 材料科学与工程学院, 上海 200072; 21南京钢铁股份有限公司产品研发中心, 江苏 南京 210035) : 0 mm ( TM CP) E3 , TMCP, , , , , ; , , 880~ 910 e , 100 m in : ; ; ; ; : TG1561 4 : A : 0254-6051( 2010) 01-0063-03 Normalization process ofE36 gra e ship plate steel 1 1 1 1 1 1 1 2 2 HU Sh i-chao, ZENG Ben , GU Yu-w ei, ZHU Song-he , ZENG W ei-m ing, WU Jing, ZHANG H eng-hua , ZHU A i-ling , LIN Guo-qiang ( 11School ofM aterials Science and Engineering, ShanghaiUn iversity, Shanghai 200072, Ch ina; 21Nanjing Iron Steel Co1, Ltd1, Product Developm ent Center, Nanjing Jiangsu 210035, Ch ina) Abstract: E ffects of normalizing temperature and tmi e on m icrostructure and mechan ical properties of E3 grade sh ip plate steel w ith thickness 0 mm were studied by usingm echanical properties test and opticalm icroscope1The results show that elongation of E3 grade ship p late steel after thermo m echan ical con trol process(TMCP) increases greatly w ith normalization, especially low-temperature mi pact toughness is obviously mi proved1Grains size grows up and the low-temperature mi pact toughness decreases w ith norm alizing temperature increasing1 Pearlite bands are b roken up and m ischcrystal is elmi inatedw ith norm aliz ing holding tmi e increasing, wh ich can mi prove the low- tem perature mi pact toughness1The optmi al norm al