Long Term Properties and Microstructural Evolution of ASTM Grade 23

被引：0
|
作者：
Caminada, S. [1 ]
Cumino, G. [1 ]
Cipolla, L. [2 ]
Vipraio, S. Tiberi [2 ]
Di Gianfrancesco, A. [2 ]
机构：
[1] TenarisDalmine, Piazza Caduti 6 Luglio 1944 1, I-24044 Dalmine, BG, Italy
[2] Ctr Sviluppo Mat, I-00128 Rome, Italy
来源：
ADVANCES IN MATERIALS TECHNOLOGY FOR FOSSIL POWER PLANTS: PROCEEDINGS FROM THE SIXTH INTERNATIONAL CONFERENCE, 2010 | 2011年
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
ASTM Grade 23 is a 2.25Cr-0.3Mo-1.5W-V-Nb-B steel widely used for the fabrication of boiler components of the most recent ultra super critical power plants; it combines high creep resistance, enhanced oxidation and corrosion resistance and good weldability. Microstructural, mechanical, and creep properties of seamless tubes and pipes after normalising and tempering heat treatment are compared with those obtained after cold bending and hot induction bending. The creep resistance is obtained through the precipitation of fine carbides after tempering. A broad program of TEM investigations on crept samples has been carried out in order to assess the evolution of the microstructure and its phases after long term high-temperature exposure, in terms of chemical composition, size and distribution of precipitates.
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页码：127 / 139
页数：13
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