摘要
利用金相显微镜、SEM、EDS和万能试验机分析了过热器管TP347HFG钢高温运行1. 2×10~4h和7. 5×10~4h后的组织与性能。结果表明,高温服役1. 2×10~4h和7. 5×10~4h后,TP347HFG钢仍保持明显的孪晶特征,析出的NbC有利于保持材料的组织稳定性。TP347HFG钢高温服役后力学性能能够保持稳定,随服役时间增加,强度增加而塑性变化不大。
The microstructure and properties of superheater tube made of TP347 HFG steel after running for 1. 2 × 10~4 h and 7. 5 × 10~4 h at high temperature was analyzed by means of metallographic microscope,SEM,EDS and universal testing machine. The results show that the TP347 HFG steel after service for 1. 2 × 10~4 h and 7. 5 × 10~4 h at high temperature can still maintain obvious twin characteristics,the Nb C precipitated is conducive to maintaining the structural stability of the material. The mechanical properties of the material can remain stable after service at high temperature,the strength increased with the serviced time extend while the plasticity changed little.
作者
宋涛
王志武
Song Tao;Wang Zhiwu(College of Machinery and Automation,Zhixing College of Hubei University,Wuhan Hubei 430011,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan Hubei 430072,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第4期60-62,共3页
Heat Treatment of Metals
关键词
TP347HFG钢
高温服役
组织
析出相
力学性能
TP347HFG steel
high temperature service
microstructure
precipitates
mechanical properties
