Results 11 to 20 of about 621 (208)

Partial-solution rejuvenation heat treatment of directionally solidified DSM11 superalloy

Cailiao gongcheng
In view of the microstructure damage and property degradation of directionally solidified DSM11 service turbine blades， it is urgent to study the partial-solution rejuvenation heat treatment.
ZHOU Qiang, HUA Xiaoyu, HUANG Chunrong, ZHENG Weiwei   +3 more
doaj   +2 more sources

Surface plastic deformation study of directionally solidified nickel-based superalloy machined by ultrasonic vibration grinding

Journal of Materials Research and Technology
Directionally solidified nickel-based superalloy exhibits anisotropic mechanical properties attributed to the removal of detrimental transverse grain boundaries.
Zhigang Dong, Renke Kang
exaly   +3 more sources

The influence of cyclic creep on the long-term oxidation behavior of a directionally-solidified nickel-based superalloy

Journal of Materials Research and Technology
This work investigates the effect of cyclic creep on the long-term oxidation of a directionally-solidified nickel-based superalloy DZ445 up to 1800 h. The stress application of cyclic creep refines the oxides, increases the oxidation weight gain, reduces
Congjiang Zhang, Haoyu Zhou, Shaofeng Liang, Jiahao Yang, Chuanxin Shi, Hongbin Yu, Weili Ren, Biao Ding, Tianxiang Zheng, Yunbo Zhong, Peter K. Liaw   +10 more
doaj   +2 more sources

Freckle Defect Formation near the Casting Interfaces of Directionally Solidified Superalloys. [PDF]

Materials (Basel), 2016
Freckle defects usually appear on the surface of castings and industrial ingots during the directional solidification process and most of them are located near the interface between the shell mold and superalloys. Ceramic cores create more interfaces in the directionally solidified (DS) and single crystal (SX) hollow turbine blades.
Hong J, Ma D, Wang J, Wang F, Sun B, Dong A, Li F, Bührig-Polaczek A.   +7 more
europepmc   +5 more sources

Anisotropy in the Creep–Fatigue Behaviors of a Directionally Solidified Ni-Based Superalloy: Damage Mechanisms and Life Assessment

Crystals
Aero-engine turbine vanes made from directionally solidified nickel-based superalloys often fail with crack formation from the external wall of cooling channels.
Anping Long, Xiaoshan Liu, Lei Xiao, Gaoxiang Zhang, Jiangying Xiong, Ganjiang Feng, Jianzheng Guo, Rutie Liu   +7 more
doaj   +2 more sources

On the origin of mosaicity in directionally solidified Ni-base superalloys [PDF]

Acta Materialia, 2021
This article addresses the formation of low angle grain boundaries which give rise to mosaicity, a phenomenon which has only recently received attention in the single crystal Ni-base superalloy field. In this work, post-mortem advanced microscopy characterisation techniques are employed to deduce the dendrite tip growth kinetics from transverse ...
Joel Strickland, Bogdan Nenchev, Karl Tassenberg, Samuel Perry, Gareth Sheppard, Hongbiao Dong, Ruiyao Zhang, Genoveva Burca, Neil D'Souza   +8 more
openaire   +1 more source

Effect of Y on Oxidation Behavior of Directionally Solidified Ni-Based Single-Crystal Superalloy

Chinese Journal of Mechanical Engineering
The effect of yttrium (Y) addition on the oxidation behavior of a Ni-based directionally solidified single-crystal superalloy is investigated in this study. Isothermal oxidation tests for samples with different levels of Y addition are conducted at 1100 °
Zihan Zhao, Kai Guan, Renjie Cui, Jianchao Qin, Zhaohui Huang   +4 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

Creep Mechanism and Microstructure Evolution of a Directionally Solidified Ni-Based Superalloy with Different Orientations at 850 °C. [PDF]

Materials (Basel)
The creep properties of directionally solidified superalloys are largely influenced by the degradation rate of the γ/γ’ microstructure and the dislocation motion, which exhibit distinct mechanisms under varying temperature and stress ...
Long A, Xiong J, Wei B, Zhang G, Feng G, Guo J, Liu R.   +6 more
europepmc   +2 more sources

Studies of the Influence of Beam Profile and Cooling Conditions on the Laser Deposition of a Directionally-Solidified Superalloy. [PDF]

Materials (Basel), 2018
In the laser deposition of single crystal and directionally-solidified superalloys, it is desired to form laser deposits with high volume fractions of columnar grains by suppressing the columnar-to-equiaxed transition efficiently.
Yang S, Du D, Chang B.
europepmc   +2 more sources