Micromechanics of primary creep in Ni base superalloys
نویسندگان
چکیده
منابع مشابه
Mechanisms of creep deformation in polycrystalline Ni-base disk superalloys
Mechanisms of creep deformation in polycrystalline Ni-base disk superalloys R.R. Unocic a,∗, G.B. Viswanathan a, P.M. Sarosi a, S. Karthikeyan b, J. Li a, M.J. Mills a a Department of Materials Science and Engineering, The Ohio State University, 477 Watts Hall, 2041 College Road, Columbus, OH 43210, USA b Department of Materials Engineering, Indian Institute of Science Bangalore, Karnataka 5600...
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Novel techniques for characterizing and assessing the properties of Ni-base superalloys are becoming increasingly important to the accelerated development of new structural alloys and the advancement of physics-based mechanical property models. Instrumented indentation techniques have long served as a useful approach for probing the mechanical response of a wide range of engineering materials. ...
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Both polycrystalline (PC) and directionally-solidified (DS) Ni-base superalloys are commonly applied as turbine materials to primarily withstand creep conditions manifested in either marine-, airor land-based gas turbines components. The thrust for increased efficiency of these systems, however, translates into the need for these materials to exhibit considerable strength and temperature resist...
متن کاملMicrostructural aspects of fatigue in Ni-base superalloys.
Nickel-base superalloys are primarily used as components in jet engines and land-based turbines. While compositionally complex, they are microstructurally simple, consisting of small (50-1000 nm diameter), ordered, coherent Ni(3)(Al,Ti)-type L1(2) or Ni(3)Nb-type DO(22) precipitates (called γ(') and γ(''), respectively) embedded in an FCC substitutional solid solution consisting primarily of Ni...
متن کاملDeformation Mechanisms in Ni-base Disk Superalloys at Higher Temperatures
This paper presents results from a research initiative aimed at investigating high temperature creep deformation mechanisms in Ni-base superalloys through a combination of creep experiments, TEM deformation mechanism characterization, and state of the art modeling techniques. The effect of microstructure on dictating creep rate controlling deformation mechanisms was revealed for specimens with ...
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ژورنال
عنوان ژورنال: International Journal of Plasticity
سال: 2018
ISSN: 0749-6419
DOI: 10.1016/j.ijplas.2018.04.009