Abstract
We have studied the deformation behavior of the inter-particle regions using a high strength nanostructured alloy (Al84Ni7Gd6Co3) produced by hot pressing of amorphous powders. The inter-particle regions, including soft aluminum and pores, are relatively weak compared to the consolidated particles. Plastic deformation, crack branching and deflection are observed in the inter-particle regions, giving rise to the arrest of cracks. High density of stacking faults and/or nanotwins are formed in the inter-particle regions after plastic deformation. The fracture mode of the Al84Ni7Gd6Co3 nanostructured alloy changes from the inter-particle failure to trans-particle failure with decreasing volume fraction of the inter-particle regions.
Original language | English |
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Pages (from-to) | 25-28 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 185 |
DOIs | |
Publication status | Published - 2016 Dec 15 |
Keywords
- Deformation and fracture
- Metals and alloys
- Sintering
- Triple point
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering