Nb-Ti微合金化船板钢CCSD36连铸板坯的高温力学性能  

Mechanical Properties of Cast Slab of Nb-Ti Microalloy Steel CCSD36 for Ship Plate at Elevated Temperature

作　　者：赵俊花[1] 朱立光[1] 孙亮[1] 

机构地区：[1]河北理工大学冶金与能源学院,唐山063009

出　　处：《特殊钢》2009年第4期66-67,共2页Special Steel

摘　　要：用Gleeble-1500热模拟试验机测试了CCSD36钢(%:0.14C、1.31Mn、0.02Nb、0.02Ti)250 mm×2100mm铸坯600～1350℃的强度(R_m)和断面收缩率(Z),并分析了600～1150℃拉伸试样断口的显微组织。得出该钢在1300～900℃Z值≥80%,具有高的延塑性;850～720℃Z值降至52%～55%(Ⅲ脆性区),因此CCSD36钢铸坯的矫直温度应≥900℃。The tensile strength （Rm） and reduction of area （Z） of 250 mm × 2 100 mm east slab of steel CCSD36 （% ：0.14C, 1.31Mn, 0. 02Nb, 0.02Ti） at 600 - 1 350 ℃ has been measured by using Cleeble-1500 thermal simulation testing machine and the structure of fracture of tensile specimen tested at 600 - 1 150 ℃ was analyzed. It was obtained that the steel had high plasticity at 1 300 - 900 ℃, of which the Z value at this temperature range was ≥80% , and the Z value of steel decreased to 52% - 55% at 850 -720 ℃ （ Ⅲ brittle zone） , therefore the strengthening temperature of cast slab of steel CCSD36 should be ≥900 ℃.

关 键 词：船板钢CCSD36 连铸板坯 矫直温度 

分 类 号：TF777[冶金工程—钢铁冶金] TG142.31[一般工业技术—材料科学与工程]