Results 81 to 90 of about 831 (157)

An Improved Model for Predicting Fatigue Crack Initiation Life of GH4169

, 2010
An improved model has been developed to predict fatigue crack initiation life using the criterion of minimizing the Gibbs free energy change considering plastic energy.
Dong Lei, Ge Li, Bin Kai Shi, Jian Hua Zhao   +3 more
core   +1 more source

Experimental on ultrahigh frequency vibration fatigue of GH4169 nickel-based superalloy

Journal of Aeronautical Materials
To address the very high cycle fatigue（VHCF）issue of GH4169 nickel-based superalloy，which is widely utilized in aero-engines，a fatigue specimen subjected to 20 kHz ultrahigh frequency vibration is designed and tested utilizing a piezoelectric ultrasonic ...
WANG Zhaohan, PAN Kai, CHEN Yonghui, HANG Chao, WANG Yongjie, YAN Qun   +5 more
doaj   +1 more source

Preparation and Thermal Shock Performance of ZrO₂/NiCrAlY Thermal Barrier Coating

Journal of Aeronautical Materials, 2017
Electric spark deposition (ESD) combining with micro-arc oxidation (MAO) were employed to fabricate ZrO2/NiCrAlY thermal barrier coating (TBC) on GH4169 substrate.
WANG Lingshuang, CAO Guojian, TANG Guangze, XU Wanjiao, MA Xinxin   +4 more
doaj   +1 more source

Effect of shot peening on the fatigue properties of nickel-based superalloy GH4169 at high temperature

Results in Physics, 2018
This study investigates the influence of shot peening on the fatigue properties of GH4169 alloy at 20 °C, 350 °C and 650 °C in air. Work hardened layer with nanocrystals and deformation twins was generated in GH4169 surface after shot peening ...
Xiaohui Zhao, Hongyang Zhou, Yu Liu
doaj   +1 more source

中国高温合金 GH4169 研究现状及发展趋势

, 2017
论文简述了中国高温合金 GH4169 的研究现状和未来的发展趋势。中国对 GH4169 合金已开展了大量的研究工作，该合金的质量不断 提高，满足了中国航空发动机用的需要。但是在组织均匀性、晶粒尺寸度控制、切削加工理论研究以及环轧技术方面与国际 Inconel 718 ...
倩云 李
core   +1 more source

Forming quality, microstructure, and ductility-oriented mechanical performance of laser powder bed fusion processed Ni-based superalloy using different thermal input modes

Journal of Materials Research and Technology
Thermal input modes significantly affect forming quality, microstructure, and mechanical properties of components fabricated by laser powder bed fusion (LPBF).
Jingjia Sun, Dongdong Gu, Guangjing Huang, Jianfeng Sun, Menghuan Yin, Qi Wu   +5 more
doaj   +1 more source

A novel approach for brazing MgF2 ceramic to TA15 alloy using AgCu/GH4169/Bi2O3B2O3ZnO composite braze fillers

Journal of Materiomics
A two-step brazing process was successfully employed to join MgF2 ceramic and TA15 alloy using eutectic Ag28% (in mass fraction) Cu alloy and Bi2O3B2O3ZnO (BBZ) glass as fillers, by introducing a 100 μm thick GH4169 interlayer.
Liangbo Sun, Yue Wen, Tao Liu, Chunfeng Liu, Tipeng Shan, Xinghong Zhang, Jie Zhang   +6 more
doaj   +1 more source

Material removal mechanisms and transition effects in electric arc mechanical combination machining of GH4169 nickel-based alloy

Journal of Materials Research and Technology
Electric arc machining (EAM) is an effective means of efficiently manufacturing GH4169 nickel-based alloy aerospace components. However, thermal defects lead to significant degradation of surface quality and accuracy.
Zongjie Zhou, Menglei Wang, Shengsheng Zhang, Yingxin Liu, Jianping Zhou   +4 more
doaj   +1 more source

Numerical Simulation of Hot Forging for the Disc of Superalloy GH4169

, 2011
In this paper, the hot deformation behavior of GH4169 superalloy were investigated at temperature of 900-1020°C and at strain rate of 0.001-0.1up to a 60% height reduction of the sample using isothermal constant strain rate compression tests on process ...
Yan Shu Zhang, Xiao Fei Liu
core   +1 more source

Probing microstructural evolution behaviors in laser welding of dissimilar GH4169/GH3039 subjected to varied preheating temperatures

Journal of Materials Research and Technology
The present study examined the evolution of interfacial microstructure and on the element distribution of GH4169/GH3039 dissimilar joints by laser welding under different preheating temperatures.
Xing Liu, Jianfeng Wang, Zhuanni Gao, Xiaohong Zhan   +3 more
doaj   +1 more source