Thermal stability comparison of nanocrystalline Fe-based binary alloy pairs
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- National Metal and Materials Technology Center (MTEC), Thani (Thailand); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Here, the widely recognized property improvements of nanocrystalline (NC) materials have generated significant interest, yet have been difficult to realize in engineering applications due to the propensity for grain growth in these interface-dense systems. While traditional pathways to thermal stabilization can slow the mobility of grain boundaries, recent theories suggest that solute segregation in NC alloy can reduce the grain boundary energy such that thermodynamic stabilization is achieved. Following the predictions of Murdock et al., here we compare for the first time the thermal stability of a predicted NC stable alloy (Fe-10at.% Mg) with a predicted non-NC stable alloy (Fe-10at.% Cu) using the same processing and characterization methodologies. Results indicate improved thermal stability of the Fe-Mg alloy in comparison to the Fe-Cu, and observed microstructures are consistent with those predicted by Monte Carlo simulations.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1239366
- Report Number(s):
- SAND2016-0884J; 619002
- Journal Information:
- JOM. Journal of the Minerals, Metals & Materials Society, Vol. 635, Issue 3; ISSN 1047-4838
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Amorphous Intergranular Films Enable the Creation of Bulk Nanocrystalline Cu–Zr with Full Density
|
journal | August 2019 |
Achieving Ultralow Wear with Stable Nanocrystalline Metals
|
journal | June 2018 |
High Temperature Mechanical Properties and Microstructures of Thermally Stabilized Fe-Based Alloys Synthesized by Mechanical Alloying Followed by Hot Extrusion
|
journal | December 2019 |
Similar Records
Bulk nanocrystalline Al alloys with hierarchical reinforcement structures via grain boundary segregation and complexion formation
Feasibility of formation of nanocrystalline Fe-Cr-Y alloys: Mechanical properties and thermal stability