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Micromechanical Behavior of Single-Crystal Superalloy with Different Crystal Orientations by Microindentation
Joint Authors
Li, Jinghui
Li, Fuguo
Dong, Junzhe
Yuan, Zhanwei
Zhang, Shuo
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-27
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In order to investigate the anisotropic micromechanical properties of single-crystal nickel-based superalloy DD99 of four crystallographic orientations, (001), (215), (405), and (605), microindentation test (MIT) was conducted with different loads and loading velocities by a sharp Berkovich indenter.
Some material parameters reflecting the micromechanical behavior of DD99, such as microhardness H, Young’s modulus E, yield stress σy, strain hardening component n, and tensile strength σb, can be obtained from load-displacement relations.
H and E of four different crystal planes evidently decrease with the increase of h.
The reduction of H is due to dislocation hardening while E is related to interplanar spacing and crystal variable.
σy of (215) is the largest among four crystal planes, followed by (605), and (001) has the lowest value.
n of (215) is the lowest, followed by (605), and that of (001) is the largest.
Subsequently, a simplified elastic-plastic material model was employed for 3D microindentation simulation of DD99 with various crystal orientations.
The simulation results agreed well with experimental, which confirmed the accuracy of the simplified material model.
American Psychological Association (APA)
Li, Jinghui& Li, Fuguo& Dong, Junzhe& Yuan, Zhanwei& Zhang, Shuo. 2015. Micromechanical Behavior of Single-Crystal Superalloy with Different Crystal Orientations by Microindentation. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1069293
Modern Language Association (MLA)
Li, Jinghui…[et al.]. Micromechanical Behavior of Single-Crystal Superalloy with Different Crystal Orientations by Microindentation. Journal of Nanomaterials No. 2015 (2015), pp.1-15.
https://search.emarefa.net/detail/BIM-1069293
American Medical Association (AMA)
Li, Jinghui& Li, Fuguo& Dong, Junzhe& Yuan, Zhanwei& Zhang, Shuo. Micromechanical Behavior of Single-Crystal Superalloy with Different Crystal Orientations by Microindentation. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1069293
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069293