退火温度对0.2C-1.5Si-1.5Mn-(0.5Cu)TRIP钢组织的影响  

Effect of Annealing Temperature on Structure of 0.2C-1.5Si-1.5Mn-(0.5Cu) TRIP Steel

作　　者：景财年[1] 王作成[2] 李长龙[1] 罗辉[1] 李成美[1] 刘一梅[1] 

机构地区：[1]山东建筑工程学院材料系,济南250014 [2]山东大学材料科学与工程学院,济南250061

出　　处：《特殊钢》2005年第2期20-22,共3页Special Steel

摘　　要：用彩色金相法、X 射线衍射、扫描电镜研究了成分 (% )为 0 2C 1 5Si 1 5Mn和 0 2C 1 5Si 1 5Mn 0 5CuTRIP钢 75 0～ 780℃不同退火温度对组织的影响。结果表明 ,含 0 5 %CuTRIP钢 75 0℃、76 0℃、780℃退火的残余奥氏体体积含量为 15 2 %～ 17 2 % ,770℃退火为 15 2 %～ 15 7% ;不含CuTRIP钢 76 0℃和 770℃退火的残余奥氏体体积含量分别为 12 5 %～ 12 9%和 14 6 %～ 15 1% ,低于 75 0℃和 780℃退火的奥氏体量分别为 17 0 %～ 17 5 %和 16 0 %～ 16 4 %。随退火温度由 75 0℃提高至 780℃ ,两种钢中的铁素体量由～70 %降至～ 5 0 % ,贝氏体量由～ 10 %增至～ 30 %The effect of annealing temperature between 750 ℃ and 780 ℃ on structure of two TRIP steel - 0.2C-1.5Si-1.5Mn and 0.2C-1.5Si-1.5Mn-0.5Cu has been studied by color metallograph method, X-ray diffraction and scanning electron micrograph. The test results showed that for the TRIP steel containing 0.5Cu, the retained austenite volume fraction was 16.2%～17.2% when annealed at 750 ℃, 760 ℃ and 780 ℃ and it was 15.2%～15.7% when annealed at 770 ℃; and for free Cu TRIP steel, when annealed at 760 ℃ and 770 ℃, the retained austenite volume fraction was 12.5%～12.9% and 14.6%～15.1% respectively which lower than that fraction - 17.0%～17.5% and 16.0%～16.4% when annealed at 750 ℃ and 780 ℃ respectively. With the annealing temperature increased from 750 ℃ to 780 ℃ the ferrite volume fraction in steel decreased from ～70% to ～50%, and the bainite volume fraction in steel increased from ～10% to ～30%.

关 键 词：退火温度 钢组织 TRIP钢 残余奥氏体 X-射线衍射 扫描电镜研究 体积含量 铁素体量 金相法 贝氏体 Cu 

分 类 号：TG156.2[金属学及工艺—热处理]