Abstract
In this work, the influence of Al and B concentration on the constituent phases and the mechanical properties of Fe100-x-yAlxB y (0 < x ≤ 35, 0 < y ≤ 25, and x + y ≤ 50) ternary alloys produced by copper mould casting was investigated. In this composition range, the rapidly solidified alloys contain two crystalline phases: α-Fe(Al) solid solution and Fe2B compound. Contour maps of compressive strength (σc) and fracture strain (εf) are plotted according to the quasi-static compression test results of the as-cast Fe-Al-B rods. These rapidly solidified Fe-Al-B crystalline alloys, such as Fe55Al30B15 as a typical sample, can show an ultra-high σc up to ∼3 GPa and a certain plasticity (∼5%). The formation of ultrafine eutectics and solid-solution strengthening of Al substitutional solution in α-Fe are considered to be responsible for the considerable improvement of strength.
| Original language | English |
|---|---|
| Pages (from-to) | S472-S475 |
| Journal | Journal of Alloys and Compounds |
| Volume | 504 |
| Issue number | SUPPL. 1 |
| DOIs | |
| State | Published - Aug 2010 |
Keywords
- Mechanical properties
- Rapid solidification
- Transition metal alloys and compounds
- X-ray diffraction
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