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Article ID: 1003-6326(2005)02-0275-05 Preparation and mechanical properties of Ni-Cr-Al alloy by EB-PVD GUAN Chun-long(关春龙), HE Xiao-dong(赫晓东), LI Yao(李 垚) (Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) Abstract: Ni-Cr-Al alloy was deposited by electron beam-physical vapor deposition(EB-PVD) method. The microstructure was investigated......
in Ni-Cr-Al alloy were performed at 873 K based on microscopic phase-field model. It is found that the substitution of Cr is affected by Cr and Al contents and limits of occupation probabilities... is formed at the boundary of L12 phase. Key words: Ni-Cr-Al alloy; microscope phase-field; precipitation; substitution; simulation ......
to the formation of relatively continuous and protective Al2O3 oxides on the surface of the foam.Key words:Ni-Cr-Al based superalloy foam？ high temperature oxidation？ oxide scale？ pore conformation stability...Oxidation behaviors of Ni-Cr-Al superalloy foams at 1 000 °C in airTANG Hui-ping(汤慧萍)1, WANG Yan(王岩)2, LIU Yong(刘咏)3, LI Wei-jie(李维杰)4, HAN Chao(韩朝)4(1. State Key Laboratory of Porous Metals......
to a large extend. Key words: Ni-Cr-Al based alloy; hot corrosion; Cr content; preoxidation; kinetics; corrosion mechanism 1 Introduction Ni-Cr-Al based alloy is a widely used superalloy which offers... the concentration of Cr, preoxidation and the LTHC behavior of Ni-Cr-Al based alloy. The mechanisms of LTHC for Ni-Cr-Al alloy with different initial states were also discussed. 2 Experimental The compositions......
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Technology, 1994, 68-69: 10-16. [2] LIU Z Y, GAO W. Oxidation behaviour of microcrystalline Ni-Cr-Al alloy coatings at 900 °C [J]. Scripta Materialia, 1998, 38(6): 877-885. [3] XU C Z, JIAG S M, BAO Z B...-electrodeposition of Ni with Cr (40 nm) and Al (100 nm) nanoparticles from a nickel sulfate bath, and its oxidation at 800 °C in air and hot corrosion under molten 75% Na2SO4 + 25% NaCl salts (mass......
precipitates forms on Ni-10Al, while Ni-5Cr-10Al develops a protective layer. So the addition of Cr promotes the formation of alumina scale. The possible mechanism of Cr on the oxidation of Ni-Al alloy is discussed. Key words: Ni-Cr-Al alloy; Ni-10Al alloy; oxidation; third-element effect 1 Introduction Binary and ternary Ni-based alloys are often used as model systems to study the processes occurring......
; Abstract: The precipitation process of Ni-Cr-Al alloy with low Al content was studied at atomic scale based on the microscopic phase-field kinetic model coupled with elastic strain energy. The aim... follows the rule of preferential selected coarsening. Key words: Ni-Cr-Al alloy; elastic strain energy; microscopic phase-field; precipitation process; simulation ......
Microscopic Phase-field Simulation of Competition Mechanism Between Ll2 and D022 Structure in Ni-Cr-Al AlloyZhong CHU, Zheng CHEN, Yongxin WANG, Yanli LU and Yongsheng LI State Key Lab... and ordering parameters of Ni-14.5 Cr-16.5 Al alloy during early precipitation process at different temperatures based on microscopic phase-field theory; the relationship between precipitation sequence......
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