Mechanical properties of rapidly solidified Fe-Al-B ternary alloys

作者：Li Ran^*; Pang Shujie; Stoica Mihai; Park Jin Man; Kuehn Uta; Zhang Tao; Eckert Juergen

来源：Journal of Alloys and Compounds, 2010, 504: S472-S475.

DOI：10.1016/j.jallcom.2010.02.082

• Transition metal alloys and compounds
• Rapid solidification
• Mechanical properties
• X-ray diffraction

In this work, the influence of Al and B concentration on the constituent phases and the mechanical properties of Fe(100-x-y)Al(x)B(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: alpha-Fe(Al) solid solution and Fe(2)B compound. Contour maps of compressive strength (sigma(c)) and fracture strain (epsilon(f)) 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 Fe(55)Al(30)B(15) as a typical sample, can show an ultra-high sigma(c) up to similar to 3 GPa and a certain plasticity (similar to 5%). The formation of ultrafine eutectics and solid-solution strengthening of Al substitutional solution in alpha-Fe are considered to be responsible for the considerable improvement of strength.

• 出版日期2010-8
• 单位北京航空航天大学