Results 181 to 190 of about 617,177 (261)

Microstructural evolution and creep mechanisms in Ni-based single crystal superalloys: A review

, 2020
Nickel-based single crystal superalloys (Ni-SXs) are of great interests in aircraft industry due to their excellent high temperature creep strength deriving from the rigid gamma/gamma prime (γ/γ′) microstructure and the single crystal nature.
Wanshun Xia, Xinbao Zhao, L. Yue, Ze Zhang   +3 more
semanticscholar   +1 more source

Predicting creep rupture life of Ni-based single crystal superalloys using divide-and-conquer approach based machine learning

, 2020
Creep rupture life is a key material parameter for service life and mechanical properties of Ni-based single crystal superalloy materials. Therefore, it is of much practical significance to accurately and efficiently predict creep life.
Yue Liu, Junming Wu, Zhichao Wang, Xiao-Gang Lu, M. Avdeev, S. Shi, Chong-yu Wang, Tao Yu   +7 more
semanticscholar   +1 more source

Interface dislocations in superalloy single crystals

Acta Materialia, 1999
The overall stress state in [gamma]-channels of [gamma]/[gamma][prime]-microstructures has three components misfit stresses (due to [gamma]/[gamma][prime]-misfit), dislocation stress fields and the external stress. In the present study glide and climb forces on [gamma]-channel dislocations (from one slip system a[sub 0]/2[01[bar 1]](111)) are studied ...
M. Probst-Hein, A. Dlouhy, G. Eggeler
openaire   +1 more source

The effect of coarsening of γ′ precipitate on creep properties of Ni-based single crystal superalloys during long-term aging

, 2020
The correlation between the coarsening of γ′ precipitate and creep properties during long-term aging at 1000 °C for 100–1000 h of a fourth-generation nickel-based single crystal superalloy was investigated.
Yingjie Huang, X. G. Wang, C. Cui, Junchun Li, L. Ye, G. Hou, Yun Yang, Jinning Liu, Jinhu Liu, Y. Z. Zhou, X. Sun   +10 more
semanticscholar   +1 more source

A Comparable Study on Stray Grain Susceptibilities on Different Crystallographic Planes in Single Crystal Superalloys

Acta Materialia, 2020
The substrate orientation can affect the stray grain formation in laser remelted single crystal superalloys. A systematic investigation on the effect of substrate orientation on stray grain susceptibility was performed by varying laser scanning ...
J.C. Guo, P. Rong, L. Wang, W.J. Chen, S.X. Han, R.N. Yang, X.W. Lei, W. Yao, N. Wang   +8 more
semanticscholar   +1 more source

Microsegregation Behavior of Single Crystal Superalloy

Advanced Materials Research, 2014
The major advancements in some mechanical properties of single crystal superalloys can be attributed to the carbon addition. The present study investigated the effect of carbon addition levels on the microsegregation behavior of single crystal superalloys.
Zhu Huan Yu, Jun Feng Qiang
openaire   +1 more source

Fretting fatigue damage mechanism of Nickel-based single crystal superalloys at high temperature

, 2020
A novel high temperature fretting fatigue test apparatus was developed to investigate the fretting fatigue mechanism of Nickel-based single crystal (NBSX) superalloys at elevated temperature.
Sun Shouyi, Lei Li, K. He, Z. Yue, Weizhu Yang, Yuan-Zhou Zhiyuan   +5 more
semanticscholar   +1 more source

Fatigue in Single Crystal Nickel Superalloys

1991
Abstract : This program investigates the seemingly unusual behavior of single crystal airfoil materials. The fatigue initiation processes in single crystal (SC) materials are significantly more complicated and involved than fatigue initiation and subsequent behavior of a (single) macrocrack in conventional, isotropic, materials.
Charles Annis, Daniel P. DeLuca
openaire   +2 more sources

Linear Friction Welding of a Single Crystal Superalloy

Materials Science Forum, 2012
The effect of forging pressure on linear friction welding (LFW) behaviour of a single crystal Ni-based superalloy was investigated. Crystal orientations of the specimens were controlled and results indicated that welding success is dependent on proximity of the oscillation direction to the <011> direction.
Wanjara, P., Dalgaard, E., Gholipour, J., Larose, J.   +3 more
openaire   +1 more source

Creep deformation modelling of superalloy single crystals

Acta Materialia, 2000
Abstract A model of creep deformation in arbitrarily oriented nickel-base superalloy single crystals has been developed. This model extends the preceding model of the present authors [Svoboda, J. and Lukas, P., Acta mater. , 1998, 46 , 3421] covering the case of creep in 〈001〉 oriented crystals.
J. Svoboda, P. Lukáš
openaire   +1 more source