superalloyswelding/ Laves phasesuperalloy 718 weld metalssolidificationNb segregationEffects of the thermally grown wustite on the fatigue crack initiation and growth in HSLA steel are evaluated as a function of oxide thickness, strain amplitude, and gaseous environment in the push-pull plastic strain ...
Grain refinement of superalloys K3 and K4169 by the addition of refiners Grain refinement of superalloys K3 and K4169 is achieved by adding refiners A, B, or mixed refiner (A+B) into the melt of alloy K3, and refiner C into the ... Y Xiong,A Yang,Y Guo,... - 《Science & Tec...
Microstructural development in high volume fraction gamma prime Ni-base oxide-dispersion-strengthened superalloys The mechanical alloying process has successfully combined oxide-dispersion-strengthening with conventional gamma prime precipitation hardening for advanced... SKKC Benn - 《Metallurgical & Materials Tr...
TOPOLOGICALLY CLOSE-PACKED PHASES IN SUPERALLOYS: New Phases and Domain Structures 1 Introduction2 Description of topologically close-packed structures2.1 Coordination polyhedra2.2 Atom layers2.3 Structure units2.4 Classification of phases3 Experimental high-resolution electron microscopy3.1 Preparation of specimens...
Phase Extraction and Analysis in Superalloys—Second Summary of Investigations by ASTM Subcommittee E04.91 A definite procedure has been established to minimize errors in the identification of X-ray diffraction patterns of superalloy phases. The need for ... RT Horstman,KC Lieb,RL Meltzer,... -...
Livingston J D.Laves-phase superalloys?. Physica Status Solidi . 1992LIVINGSTON J D. Laves-phase superalloys?[J]. Physica Status Solidi(a), 1992, 131(2): 415-423.J. D. Livingston, Laves-phase superalloys?, Phys. Stat. Sol. A 131 (1992) 415-423....
Understanding the formation and elimination mechanism of TCP phases is the key to promote the development of superalloys. In this study, C15-Laves phase was first found in a Hf-containing Co-based superalloy, meanwhile, the formation mechanism and thermal stability of the C15-Laves phase were ...
Topologically close-packed (TCP) phases such as Laves phases are usually considered to harm the mechanical properties of classical superalloys for high-temperature applications. However, if an optimal fraction and size are designed, this situation can completely change for some compositionally complex ...
Multiphase NiAl Ta Cr alloys are regarded as promising for structural high temperature applications and have been selected for a materials development which aims at applications in gas turbines at temperatures above those of Ni base superalloys, such alloy can be prepared by ingot metallurgy and ...
Laves phases are regarded as topologically close pack phases in superalloys, which damage mechanical properties, especially notch sensitivity of the material. However, here we innovatively found that the formation of large blocky primary Laves phase in Thermo-Span alloys does not cause notch sensitivity...