Results 81 to 90 of about 1,368 (215)

Creep deformation behavior and residual life prediction of low hardness P91 steel welded joints

Journal of Materials Research and Technology
The remaining creep life of the reheat section pipeline of low hardness P91 steel replaced in a certain power plant was studied. The rupture behavior of the joint was studied using metallographic microscope (OM), scanning electron microscope (SEM), and ...
Denghui Wang, Bo Tu, Kai Yan, Fei Gao, Zihao Shen, Zheng Zhang   +5 more
doaj   +1 more source

Forecasting the distribution of precipitate diameters in the presence of changes in the structure of the material

Archives of Metallurgy and Materials, 2017
The results of investigations on the microstructure of T23 and T24 low-alloy steels as well as P91 and P92 high-chromium steels in the as-received condition and after 70.000 h annealing at 550-650°C are presented.
Zieliński A., Miczka M., Golański G.
doaj   +1 more source

Research of fracture mechanism of steel grade P91 on impact bending after preheat treatment before welding

Литьë и металлургия
The influence of modes of preliminary heat treatment (HT) of P91 steel on crack formation during impact bending test has been investigated. Curves of dependence of force variation in time and specimen deflection variation depending on the force have been
F. I. Panteleenko, V. A. Zelenin, A. L. Minkov   +2 more
doaj   +1 more source

NEGLIGIBLE CREEP OF P91 STEEL

, 2014
To avoid inclusion of the possible creep effects during normal service operation in future nuclear plants in the component design, it is important to define temperature, stress and time limits for negligible creep for P91 steel.
LUZGINOVA Natalia, HOLMSTROM Bjorn
core  

Study on Relationship of Abnormal Heat Treatment, Microstructure and Properties of P91 Steel

, 2011
Improper heat treatment may result in unsatisfactory microstructure and mechanical properties for P91 steel. In this work, the effect of abnormal heat treatment on microstructure and properties of P91 steel were studied.
Jie Ouyang, Yan Ting Feng, Xiao Guang Niu, Wen Peng Li, Xue Xia Xu   +4 more
core   +1 more source

Numerical Simulation and Experimental Research on Microstructural Evolution During Compact Hot Extrusion of Heavy Caliber Thick-Wall Pipe

Chinese Journal of Mechanical Engineering, 2019
Compact hot extrusion (CHE) process of heavy caliber thick-wall pipe is a new material-saving production process. In order to reveal the optimum hot extrusion parameters in CHE process, the effects of the extrusion parameters on the microstructural ...
Lu Jia, Yongtang Li, Tianjing Hui, Yang Zhang   +3 more
doaj   +1 more source

Present Status of Development of Supercritical and Ultra-Supercritical Boiler Tubes

Teshugang, 2016
The exploiting background and present stature of grade development for supercritical and ultra-supercritical boiler tubes are introduced in this article including the main chemical composition, mechanical properties and corrosion resistance of ferrite ...
邢娜, 黄宝, 何立波
doaj  

Study on Microstructure and Mechanical Properties of Laser Welded Dissimilar Joint of P91 Steel and INCOLOY 800HT Nickel Alloy. [PDF]

Materials (Basel), 2021
Bhanu V, Fydrych D, Gupta A, Pandey C.
europepmc   +1 more source

Boro-aluminising of P91 steel by pack cementation for protection against steam oxidation [PDF]

, 2011
High performance alloys are often the materials used for various components exposed to high temperature environments. In many cases, protective coatings are applied in these alloys, providing higher corrosion and oxidation resistance, compared to the ...
Michailidis, N, Tsipas, Sophia Alexandra, Omar, H, H Omar, N Michailidis*, Maragoudakis, N, S A Tsipas, Omar, H., N Maragoudakis   +8 more
core   +1 more source

Novel martensitic steel for ultra-supercritical power rotors: enhanced high-stress creep resistance via multi-element MC carbides

Materials Research Letters
This study presents the design of a novel heat-resistant steel derived from the P91 steel, achieved through precise control of C, Mo, V, and Cr contents, along with the addition of Ti and Ta.
Shujing Wang, Junyu Chen, Xiao Yang, Chenhui Zhu, Chao Zhao, Cheng Zhang, Jiawei Fu, Jinfeng Huang   +7 more
doaj   +1 more source