Sökning: id:"swepub:oai:research.chalmers.se:b33eba15-8aaa-4700-8a3e-75d47de60983" >
Bauschinger effect ...
Bauschinger effect and latent hardening under cyclic micro-bending of Ni-base Alloy 718 single crystals: Part I. Experimental analysis of single and multi slip plasticity
-
- Kreins, M. (författare)
- Rheinisch-Westfaelische Technische Hochschule Aachen,RWTH Aachen University
-
- Schilli, S. (författare)
- Hochschule Offenburg,University of Applied Sciences Offenburg
-
- Seifert, T. (författare)
- Hochschule Offenburg,University of Applied Sciences Offenburg
-
visa fler...
-
- Harihara Subramonia Iyer, Anand, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Hörnqvist Colliander, Magnus, 1979 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Wesselmecking, S. (författare)
- Rheinisch-Westfaelische Technische Hochschule Aachen,RWTH Aachen University
-
- Krupp, U. (författare)
- Rheinisch-Westfaelische Technische Hochschule Aachen,RWTH Aachen University
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
-
Ingår i: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing. - : Elsevier BV. - 0921-5093. ; 827
- Relaterad länk:
-
https://research.cha...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Cyclic micro-bending tests on fcc single crystal Ni-base Alloy 718 cantilevers with different crystal orientations were performed to analyze the influence of activated slip systems on dislocation plasticity, latent hardening and the Bauschinger effect. The investigations indicate that plasticity in single crystal micro-cantilevers is significantly influenced by two phenomena - dislocation interaction and dislocation pile-up at the neutral plane. Both phenomena occur at the same time. Their ratio seems to be determined by the activated slip systems. Slip trace analysis indicates that the activation of only one slip system leads to a strong localization of plasticity to a limited number of parallel slip bands. This results in low dislocation interaction and consequently pronounced pile-ups at the neutral plane. In multi slip orientation, the second slip system leads to activation of significantly more dislocation sources, causing a much earlier and more homogeneous elastic-plastic transition zone. In stress-strain hysteresis loops during bending, pronounced dislocation interaction in multi slip orientation leads to a more pronounced latent hardening. The results suggest that on a microstructural length scale, plasticity behavior is strongly affected by activated slip systems, which determine local dislocation phenomena. Based on the results presented in this paper, a finite element analysis of latent hardening and the Bauschinger effect using a single crystal plasticity model with latent kinematic hardening is presented in Part II.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Nickel-based superalloys
- Slip trace analysis
- Single crystal plasticity
- Cyclic micro-bending
- Bauschinger effect
- Latent kinematic hardening
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas