Microstructure and mechanical properties of T92 and 310HCBN tubes for 1000 MW ultra-supercritical boilers

Lei Zhang; Chenxi Wang; Haoyang Ma; Qiang Zhang

doi:10.1117/12.3033430

16 October 2024 Microstructure and mechanical properties of T92 and 310HCBN tubes for 1000 MW ultra-supercritical boilers

Lei Zhang, Chenxi Wang, Haoyang Ma, Qiang Zhang

Author Affiliations +

Proceedings Volume 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024); 132910X (2024) https://doi.org/10.1117/12.3033430
Event: Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 2024, Changchun, China

Abstract

Taking a 1000 MW ultra-supercritical boiler heating surface pipe as the research object, the microstructure and mechanical properties of T92/TP310HCbN secondary reheater pipe and its welded joints after its service for about 60, 000 h were analyzed. The deterioration degree of the two materials and welded joints after long-term service was studied. The results show that the microstructure of welded joints and base materials of T92/TP310HCbN steel is normal and no obvious aging phenomenon is observed after high-temperature service. In terms of mechanical properties, the yield strength and tensile strength of the two kinds of steel pipe welds meet the standard requirements, but the elongation of TP310HCbN steel pipe after fracture decreases obviously, indicating that its brittleness increases. In addition, the hardness value of the coarse crystal zone on the side of T92 steel is high, and the metal supervision in this area should be strengthened to ensure the safe operation of dissimilar steel welded joints under long-term high temperatures and high pressures.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lei Zhang, Chenxi Wang, Haoyang Ma, and Qiang Zhang "Microstructure and mechanical properties of T92 and 310HCBN tubes for 1000 MW ultra-supercritical boilers", Proc. SPIE 13291, Ninth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2024), 132910X (16 October 2024); https://doi.org/10.1117/12.3033430

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE