Results 111 to 120 of about 10,456 (224)
In situ fatigue loading stage inside scanning electron microscope [PDF]
A fatigue loading stage inside a scanning electron microscopy (SEM) was developed. The stage allows dynamic and static high-magnification and high-resolution viewing of the fatigue crack initiation and crack propagation processes.
Brewer, David +2 more
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Experimental Study on the Microscale Milling Process of DD5 Nickel-Based Single-Crystal Superalloy
MetalsTechnological advances have expanded the use of single-crystal in microscale applications—particularly in infrared optics, electronics, and aerospace. Conducting research on the surface quality of micro-milling processes for single-crystal superalloys ...
Ying Li +6 more
doaj +1 more source
Unified constitutive model for single crystal deformation behavior with applications [PDF]
Single crystal materials are being used in gas turbine airfoils and are candidates for other hot section components because of their increased temperature capabilities and resistance to thermal fatigue.
Jordan, E. H. +2 more
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Jixie qiangdu, 2015 A low cycle fatigue life prediction method for single crystal nickel-base superalloys at high temperature is presented,and the method can consider the effect of average stress,strain ratio and crystal orientation on fatigue life.Firstly,a fatigue life ...
CHEN Hong, JIANG HongDe
doaj
The continuing battle against defects in nickel-base superalloys [PDF]
In the six decades since the identification of age hardenable nickel-base superalloys their compositions and microstructures have changed markedly. Current alloys are tailored for specific applications.
Dreshfield, R. L.
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Composition Optimization in Alloy Design for Nickel-Based Single Crystal Superalloy: A Review
MetalsThis article presents a review of the composition optimization progress of nickel-based single crystal (SC) superalloy design in recent years in order to obtain better high-temperature performance for the development of the aviation industry.
Yu Zhou +9 more
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Hydrogen induced fracture characteristics of single crystal nickel-based superalloys [PDF]
A stereoscopic method for use with x ray energy dispersive spectroscopy of rough surfaces was adapted and applied to the fracture surfaces single crystals of PWA 1480E to permit rapid orientation determinations of small cleavage planes. The method uses a
Chen, Po-Shou, Wilcox, Roy C.
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Understanding the roles of the strategic element cobalt in nickel base superalloys [PDF]
The United States imports over 90% of its cobalt, chromium, columbium, and tantalum, all key elements in high temperature nickel base superalloys for aircraft gas turbine disks and airfoils. Research progress in understanding the roles of cobalt and some
Dreshfield, R. L., Stephens, J. R.
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Anisotropy of nickel-base superalloy single crystals [PDF]
The influence of orientation on the tensile and stress rupture behavior of 52 Mar-M247 single crystals was studied. Tensile tests were performed at temperatures between 23 and 1093 C; stress rupture behavior was examined between 760 and 1038 C.
Dreshfield, R. L. +2 more
core +1 more source
On Thermomechanical Fatigue of Single-Crystal Superalloys
, 2014 Thanks to their excellent mechanical and chemical properties at temperatures up to 1000 °C, nickel-based superalloys are used in critical components in high-temperature applications such as gas turbines and aero engines. One of the most critical components in a gas turbine is the turbine blade, and to improve the creep and fatigue properties of this ...
openaire +4 more sources