淬火冷却速度对碳素钢显微组织的影响  

EFFECT OF COOLING RATE DURING QUENCHING ON THE MICROSTRUCTURES OF CARBON STEEL

作　　者：侯豁然[1] 刘清友[1] 孙新军[1] 董瀚[1] 

机构地区：[1]钢铁研究总院

出　　处：《钢铁》2004年第1期44-46,71,共4页Iron and Steel

摘　　要：在 Gleeble2 0 0 0热模拟实验机上对普通碳素钢 Q2 35进行了不同温度的单道次变形实验 ,对变形后的试样采用三种不同的介质以不同冷却速度进行淬火 ,分别为水、- 6 0℃的干冰酒精溶液和含 5 0 % Na Cl的冰盐水。实验结果表明 ,不同冷却速度对淬火后的组织状态影响很大。在冰盐水中淬火 ,钢的淬透性较高 ,变形后原始奥氏体状态基本上得到保留。在干冰酒精中淬火钢的淬透性最差。The single pass compression tests at different temperatures were carried out on a Gleeble 2000 thermomechnical simulator for steel Q235 quenched immediately after deformation into different quenching media such as water, -60 ℃ dry ice alcohol solution and ice salt water with 50 % NaCl The results show that the microstructure depends on the cooling rate The hardenbility of the steel is high when quenching in the ice salt water, the original austenite is maintained mainly after quenching except some ferrite exists at the center of the samples The hardenbility of the steel quenched in dry ice is the lowest

关 键 词：淬火 冷却速度 碳素钢 显微组织 变形诱导铁素体相变 

分 类 号：TG156.3[金属学及工艺—热处理]