温度对中碳钢淬火组织塑性变形力学行为的影响  

Effect of Temperature on the Mechanics Behavior of Quenched Medium Carbon Steel During the Plastic Deformation

作　　者：周继锋[1,2] 高聿为[2] 荆天辅[2] 

机构地区：[1]江苏省特种设备安全监督检验研究院张家港分院,江苏张家港215600 [2]亚稳材料制备技术与科学重点实验室燕山大学材料科学与工程学院,河北秦皇岛066004

出　　处：《物理测试》2011年第4期20-22,共3页Physics Examination and Testing

摘　　要：利用Gleeble3500热力模拟试验机对中碳钢M和P+F组织的温加工流变应力在不同的变形参数条件下进行了对比研究。结果表明:存在临界温度和临界应变量,使M组织的流变应力等于和低于F+P组织;应变速率(.ε)为0.01 s-1时,650～700℃压缩,M和F+P的流变行为近于一致,M组织的加工软化作用都大于F+P组织,二者的σ-ε曲线存在交点,交点所对应的ε值为临界应变量。Comparison of the warm deformation stress changing quenching and annealing in medium carbon steel was studied using a Gleeble3500 simulation machine.The results show that critical temperature and critical strain make the flow stress of M equal to or lower than that of F＋P structure.When strain rate（ε·） is 0.01 s-1 and the compression temperature is between 650 ℃ and 700 ℃,the flow behavior of M and F＋P structure is similar,and the working softening of M structure is always larger than that of F＋P structure.Their σ-ε curves have point of intersection and the ε corresponding to the point is critical strain.

关 键 词：马氏体 温变形 流变应力 临界应变量 临界温度 

分 类 号：O344[理学—固体力学]