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Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys

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Science  23 Nov 2018:
Vol. 362, Issue 6417, pp. 933-937
DOI: 10.1126/science.aas8815

Nanoparticle superalloy

Improving the strength of a metal alloy is hard to do without sacrificing the ductility. Yang et al. designed an iron-nickel-cobalt (Fe-Ni-Co) alloy laced with aluminum-titanium (Al-Ti) nanoparticles with both high strength and ductility. The key was getting the composition tuned correctly, because the Fe-Ni-Co matrix reacts with the Al-Ti nanoparticles. This was vital for avoiding environmental embrittlement, enhancing work hardening, and improving ductility.

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