Results 1 to 10 of about 1,841 (194)

Life prediction of a Ni-base superalloy

Bulletin of Materials Science, 2011
Rene 80 samples were creep–rupture tested in air between 1144 and 1255 K at various stress levels. The mean stress exponent, n, and the mean activation energy for creep were calculated from the experimental results. The accelerated creep life of the alloy was evaluated by using iso-stress parametric equations and Monkman–Grant method.
M AGHAIE-KHAFRI, M NOORI
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Potential of carbide strengthened economical wrought nickel-based alloy for high temperature

Journal of Materials Research and Technology
A carbide strengthened wrought Ni-based superalloy is developed. The alloy depends on carbide dispersion strengthening. A high deformation plasticity in homogeneous alloy is shown in the 1100–1200 °C isothermal compression test and the improvement of ...
Shuo Chen, He Jiang, Fa Wang, Jianxin Dong   +3 more
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Strength of nanoporous Ni-based superalloy membranes

Journal of Physics: Conference Series, 2010
Nanoporous Ni-based superalloy membranes are a new material class. They are fabricated from the two phase γ/γ' base material by thermomechanical processing, followed by selective phase extraction. Compared to other metallic membrane materials, they stand out due to an extremely regular and fine channel-like porosity on the nanoscale.
J Rösler, O Näth
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Mechanical Properties of Powder Injection Molded Ni-Based Superalloys [PDF]

Advanced Materials Research, 2011
This paper describes the microstructural and mechanical properties of powder injection moulded (PIM) Ni based superalloys. Ni-based superalloys were mixed with a polymeric binder (paraffin wax, carnauba wax, stearic acid and PP) and injection moulded as standard tensile bars. The critical powder loading for injection moulding were 62.5 vol.
Gulsoy, H. Ozkan, Ozbek, Sunullah, Gunay, Volkan, Baykara, Tarik   +3 more
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On Crystal Mosaicity in Single Crystal Ni-Based Superalloys [PDF]

Crystals, 2019
In the present work, we investigate the evolution of mosaicity during seeded Bridgman processing of technical Ni-based single crystal superalloys (SXs). For this purpose, we combine solidification experiments performed at different withdrawal rates between 45 and 720 mm/h with advanced optical microscopy and quantitative image analysis.
Philipp Hallensleben, Felicitas Scholz, Pascal Thome, Helge Schaar, Ingo Steinbach, Gunther Eggeler, Jan Frenzel   +6 more
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Simulation of oxidation-nitridation-induced microstructural degradation in a cracked Ni-based superalloy at high temperature

MATEC Web of Conferences, 2014
In turbine engines, high temperature components made of superalloys may crack in a creep process during service. With the inward flux of the gases, e.g.
Yuan Kang, Peng Ru Lin, Li Xin-Hai, Johansson Sten, Wang Yan-Dong   +4 more
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Computational Tools for Designing Ni-Base Superalloys

Superalloys 2004 (Tenth International Symposium), 2004
The main objective of this work is to develop a set of integrated computational tools that can be employed to design Ni-base superalloys. In particular, we developed reliable thermodynamic, kinetic and lattice parameter databases for the Ni-Al-Mo superalloys by combining first-principles calculations and CALPHAD (CALculation of PHAse Diagrams ...
J.Z. Zhu, S.H. Zhou, Y. Wang, T. Wang, L.Q. Chen, R.A. MacKay, Z.-K. Liu   +6 more
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Large scale 3-D phase-field simulation of coarsening in Ni-base superalloys

MATEC Web of Conferences, 2014
In this study we present a large scale numerical simulation of γ-γ′ microstructure evolution in Ni-base superalloy using the multi-phase field method in three dimensions. We numerically simulated precipitation hardening heat treatment cycles. Large scale
Kumar Rajendran Mohan, Shchyglo Oleg, Steinbach Ingo   +2 more
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Effect of solid solution temperature on microstructure of Hf-containing K416B Ni-based superalloy with high W-content

Journal of Aeronautical Materials, 2019
By means of microstructure observation on Hf-containing K416B Ni-based superalloy with high W-content after solid solution heat treatment at different temperatures, the effect of solid solution temperature on microstructure of the alloy was investigated.
HOU Guichen, SU Haijun, XIE Jun, XUN Shuling, YU Jinjiang, SUN Xiaofeng, ZHOU Yizhou   +6 more
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The dynamic recrystallization of the Ni-based superalloy under the supergravity stress and high temperature

Materials Research Letters
The occurrence of recrystallization will greatly decrease the service life of superalloy blades. The dynamic recrystallization of a Ni-based single crystal superalloy under supergravity stress and high temperature was studied. When tested at 950 °C, only
Wenshuai Wang, Haibo Long, Xueqiao Li, Guo Yang, Hua Wei, Shengcheng Mao, Lihua Wang, Ze Zhang, Xiaodong Han   +8 more
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