STRUCTURE OF THE S304H STEEL AFTER 20,000 HOURS OF AGEING

被引:0
|
作者
WERSTA, R. [1 ]
ZIELINSKI, A. [2 ]
SROKA, M. [3 ]
PUSZCZALO, T. [3 ,4 ]
SOWKA, K. [3 ,4 ]
机构
[1] Off Tech Inspect, Reg Branch Off Based Wroclaw, 51 Grabiszynska St, PL-53503 Wroclaw, Poland
[2] Lukasiewicz Res Network, Inst Ferrous Met, K Miarki 12-14, PL-44100 Gliwice, Poland
[3] Silesian Tech Univ, Depa Engn Mat & Biomat, 18 AS Konarskiego St, PL-44100 Gliwice, Poland
[4] ZRE, 13 Gen Jankego St, PL-40615 Katowice, Poland
关键词
S304H steel; microstructure; precipitates; ageing; Cu_rich phase; sigma phase; MECHANICAL-PROPERTIES; MICROSTRUCTURE; PRECIPITATION; AUSTENITE; BEHAVIOR; SERVICE; LIFE;
D O I
10.24425/amm.2022.137781
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The S304H steel is used in the construction of pressure components of boilers with supercritical operating parameters. The paper presents the results of the research on the microstructure after ageing for 20,000 hours at 650 and 700??C. The microstructure examination was performed using scanning and transmission electron microscopy. The precipitates were identifies using transmission electron microscopy. The influence of ageing time on microstructure changes and the precipitation process of the tested steel is described. The presented research results are an element of material characteristics of the new generation of steel, which are used in the design work of pressure devices of steam boilers and in diagnostic work during operation.
引用
收藏
页码:487 / 493
页数:7
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