Keil, Tom ; Minnert, Christian ; Bruder, Enrico ; Durst, Karsten (2022):
Solid solution hardening effects on structure evolution and mechanical properties of nanostructured binary and high entropy alloys after high pressure torsion. (Publisher's Version)
In: IOP Conference Series: Materials Science and Engineering, 1249, IOP Publishing, e-ISSN 1757-899X,
DOI: 10.26083/tuprints-00021999,
[Article]
![]() |
Text
MSE_1249_1_012003.pdf Copyright Information: CC-BY 3.0 Unported - Creative Commons, Attribution. Download (2MB) |
Item Type: | Article |
---|---|
Origin: | Secondary publication DeepGreen |
Status: | Publisher's Version |
Title: | Solid solution hardening effects on structure evolution and mechanical properties of nanostructured binary and high entropy alloys after high pressure torsion |
Language: | English |
Abstract: | Two different alloy series (Cu-X, Ni-X) have been selected to investigate the effects of solutes on the saturation grain size, the thermal stability and mechanical properties after high pressure torsion. The results of the Cu-X series indicate that the saturation grain size does not correlate with the stacking fault energy but shows good agreement with solid solution hardening according to the Labusch model. This correlation does not only hold for binaries, but also for chemically complex high entropy alloys (Ni-X) in the form of (CrMnFeCo)xNi1-x, where the Varvenne model is used to describe solid solution hardening. The alloy series exhibit a grain size in the range of 50 – 425 nm after high pressure torsion and the solutes increase the strength as well as the thermal stability of the alloys after annealing. The nanostructured alloys exhibit an enhanced strain rate sensitivity exponent, as determined from nanoindentation strain rate jump and constant contact pressure creep testing, whereas an enhanced rate sensitivity is found at low strain rates. The relatively lower rate sensitivity of the alloys as well as their higher thermal stability indicate, that defect storage and annihilation is strongly influenced by a complex interaction of solutes, dislocations and grain boundaries. |
Journal or Publication Title: | IOP Conference Series: Materials Science and Engineering |
Volume of the journal: | 1249 |
Place of Publication: | Darmstadt |
Publisher: | IOP Publishing |
Collation: | 14 Seiten |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy |
Date Deposited: | 12 Aug 2022 12:08 |
Last Modified: | 30 Aug 2022 11:11 |
DOI: | 10.26083/tuprints-00021999 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-219994 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21999 |
PPN: | 498704769 |
Export: |
![]() |
View Item |