摘要
利用MMS-200热模拟试验机和C-Strain传感器研究了SY740非调质钢在连续冷却过程中的相变行为,确定了SY740非调质钢的临界温度为Ac1=720℃,Ac3=827℃,由此探讨了不同冷却速率下相变温度区间的显微组织,并对相应的显微组织进行了硬度测量,分析了冷却速率对非调质钢组织与性能的影响。根据试验结果制定生产过程控制参数,产品质量满足用户特定要求。
The phase transition behavior of SY740 non-quenched and tempered steel during continuous cooling process was studied by using MMS-200 thermal simulation machine and C-Strain sensor, and the critical temperature of the steel was determined to be A c 1=720 ℃ and A c 3=827 ℃. The microstructure of phase transition temperature zone at different cooling speeds was discussed. The hardness of corresponding microstructure was measured, and the influence of cooling rate on the structure and properties was analyzed. According to the test results, control requirements of production process was worked out, the product quality can meet specific requirements of customers.
作者
郭泽尧
彭碧辉
袁桥军
Guo Zeyao;Peng Bihui;Yuan Qiaojun(Xiangtan Iron & Steel Group Corp, Xiangtan 411101,China;Xiangtan Biological & Mechanical Electrical School, Xiangtan 411134,China)
出处
《金属制品》
2019年第4期40-43,共4页
Metal Products
关键词
非调质钢
连续冷却
相变
珠光体
临界温度
non-quenched and tempered steel
continuous cooling
phase transition
pearlite
critical temperature
