Microstructural Aspect of Long Term Service of the Austenitic TP347HFG Steel / Wpływ Długotrwałej Eksploatacji Na Mikrostrukturę Stali TP347HFG

Archives of Metallurgy and Materials

J. Słania¹  A. K. Lis²  G. Golański²  A. Zieliński³ 

[1] Czestochowa University of Technology , Welding Departament , Armii Krajowej 19c, 42-200 Czestochowa , Poland;Czestochowa University of Technology, Institute of Materials Engineering , Armii Krajowej 19, 42-200 Czestochowa , Poland;Institute for Ferrous Metallurgy, K. Miarki 12-14, 44-120 Gliwice , Poland

关键词: Keywords: TP347HFG steel;    microstructure;    TEM;   

DOI  :  10.1515/amm-2015-0463

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The paper presents the results of research on the microstructure of austenitic creep-resisting TP347HFG steel after longterm service. The tests of the microstructure were performed using SEM and TEM. The identification of precipitates was carried out using selective electron diffraction. It has been shown that long-term service mostly contributes to the processes of precipitation of secondary NbC carbides inside grains and M23C6 carbides on grain boundaries. In the microstructure of the examined steel, also the processes of polygonization and recrystallization of the matrix were revealed.

【 授权许可】

Unknown