Results 1 to 10 of about 3,032 (138)

Rejuvenation of Retired Power Cables by Heat Treatment: Experimental Simulation in Lab [PDF]

IEEE Access, 2020
In this work, heat treatment was performed on three retired 110 kV AC cables with service years of 0, 15 and 30, and the effects on the thermal and electrical performance of the cable insulation were investigated.
Yue Xie, Yifeng Zhao, Shuzhen Bao, Pengyu Wang, Jiasheng Huang, Gang Liu, Yanpeng Hao, Licheng Li   +7 more
doaj   +2 more sources

Microstructure evolution of creep damaged DZ411 superalloy during rejuvenation heat treatment

Journal of Aeronautical Materials, 2019
The simple solution and aging treatment processes were adopted to rejuvenate the microstructure of creep damaged DZ411 superalloy. The microstructure evolution of superalloy during rejuvenation process was investigated by OM and SEM, and then the ...
TANG Wenshu, XIAO Junfeng, GAO Sifeng, LI Yongjun, NAN Qing, ZHANG Jiong   +5 more
doaj   +2 more sources

Comparative Study on Hot Metal Flow Behaviour of Virgin and Rejuvenated Heat Treatment Creep Exhausted P91 Steel

Applied Sciences, 2023
This article reports on the comparative study of the hot deformation behaviour of virgin (steel A) and rejuvenated heat treatment creep-exhausted (steel B) P91 steels.
Shem Maube, Japheth Obiko, Josias Van der Merwe, Fredrick Mwema, Desmond Klenam, Michael Bodunrin   +5 more
doaj   +2 more sources

Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy [PDF]

Applied Sciences, 2020
Interrupted creep tests were performed on a polycrystalline Ni-base superalloy, and rejuvenation heat treatment (RHT) was carried out to restore the creep resistance.
Linning Wang, Yuan Liu, Jingjing Liang
doaj   +2 more sources

Influence of Cooling Scenarios on the Evolution of Microstructures in Nickel-Based Single Crystal Superalloys

Crystals, 2022
The reprecipitation and evolution of γ’ precipitates during various cooling approaches from supersolvus temperature are studied experimentally and via phase field simulation in nickel-based single crystal superalloys.
Zhengxing Feng, Zhixun Wen, Guangxian Lu, Yanchao Zhao   +3 more
doaj   +3 more sources

Influence of Rejuvenation Heat Treatment on Creep Property for Nickel-Based Directionally Solidified Superalloy

Chinese Journal of Mechanical Engineering
Creep is one of the most typical failure modes for the turbine blades of an aero-engine. The microstructure of the turbine blades after long-term service can be adjusted by rejuvenation heat treatment (RHT) to restore its creep properties.
Rongqiao Wang, Mingrui Li, Jinchao Pan, Wenchao You, Liucheng Zhou, Yan Zhao, Dianyin Hu   +6 more
doaj   +2 more sources

Investigations on microstructural and mechanical properties of long-term thermally exposed superalloy Mar-M247 after rejuvenation heat treatment

Journal of Materials Research and Technology
Mar-M247 is a polycrystalline nickel-based superalloy utilized for blades in heavy-duty gas turbines. However, the microstructure degradation of the alloy during long-term aging includes coarsening of the γ′ phase and precipitation of TCP phase, which ...
Song Wu, Lexin Yang, Yubing Pei, Fenling Wang, Changshuai Wang, Chao Luo, Bin Zhou, Xiufang Gong   +7 more
doaj   +2 more sources

Effect of rejuvenation heat treatment on re-service aging stability of γ′phase in directionally solidified superalloy

Journal of Aeronautical Materials, 2021
High temperature aging treatment was first conducted on the rejuvenated directionally solidified superalloy to simulate the re-service aging damage of turbine blades and the virgin directionally solidified superalloy respectively.
TANG Wenshu, XIAO Junfeng, NAN Qing, GAO Sifeng, LI Yongjun, ZHANG Jiong   +5 more
doaj   +1 more source

Effect of aging heat treatment on microstructure of Ni-based single crystal superalloys

AIP Advances, 2021
The precipitation and evolution of γ′ precipitates for various aging heat treatment regimes are studied experimentally in Ni-based single crystal superalloys for both standard heat treatment and long-term aging samples.
Zhengxing Feng, Zhixun Wen, Meng Li, Yanchao Zhao, Zhufeng Yue   +4 more
doaj   +1 more source

A new rejuvenation heat treatment of crept Ni-based superalloy single crystals

IOP Conference Series: Materials Science and Engineering, 2022
Abstract Ni-based superalloys are widely used in harsh environments due to their exceptional high-temperature mechanical properties, and their microstructures are inevitably subjected to degradation, including accumulation of strain/stress, generation of high density of dislocations, and rafting of γ′-particles, under creep damage.
Sicong Lin, Hao Shen, Guangni Zhou, Weifeng He, Kai Chen   +4 more
openaire   +1 more source