| Title: |
Intergranular Fracture of Lithium Fluoride–22% Calcium Fluoride Hypereutectic Salt at 800 K |
| Authors: |
Raj, Subramanium V.; Whittenberger, J. Daniel |
| Source: |
Journal of the American Ceramic Society ; volume 73, issue 2, page 403-408 ; ISSN 0002-7820 1551-2916 |
| Publisher Information: |
Wiley |
| Publication Year: |
1990 |
| Collection: |
Wiley Online Library (Open Access Articles via Crossref) |
| Description: |
Constant‐velocity compression tests were conducted at 800 K on as‐cast LiF‐22 mol% CaF 2 hypereutectic salt with engineering strain rates varying between 1.8 × 10 −6 and 2.3 × 10 −1 s −1 . Considerable stain hardening was observed during the initial stages of deformation, and the true stress‐strain curves exhibited maxima. Plots of the true strain rate against the flow stress at the proportional limit and the peak stress exhibited a power‐law relation with stress exponents of 7.7. Microstructural examination of the deformed specimens showed extensive grain‐boundary cracking and cavitation. These results suggest that grain‐boundary cracking and interfacial sliding is important for cavity nucleation at the grain boundaries and at the LiF‐CaF 2 interfaces, and cavity growth and interlinkage, which appear to depend on the morphological differences between different grain boundaries, occur through the preferential failure of the weaker LiF phase. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1111/j.1151-2916.1990.tb06525.x |
| DOI: |
10.1111/j.1151-2916.1990.tb06525.x/fullpdf |
| Availability: |
https://doi.org/10.1111/j.1151-2916.1990.tb06525.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1151-2916.1990.tb06525.x; http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1151-2916.1990.tb06525.x/fullpdf |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| Accession Number: |
edsbas.2C01E7A0 |
| Database: |
BASE |