A light-weight high-entropy alloy Al20Be20Fe10Si15Ti35
- 344 Downloads
A light-weight high-entropy alloy (LWHEA) Al20Be20Fe10Si15Ti35 has been developed to have unique mechanical properties and oxidation resistance. One major and two minor phases are observed in the as-cast microstructure. The density of the alloy is 3.91 g cm−3, and its hardness is HV 911, which is higher than quartz. The hardness and hardness to density ratio are the highest of all light-weight alloys reported before. In addition, it has excellent oxidation resistance at 700°C and 900°C, which far exceeds that of Ti-6Al-4V. Thus, the combination of properties is promising for high-temperature applications, which require light weight, wear-resistant and oxidation-resistant components.
Keywordshigh-entropy alloy light weight low density oxidation resistance
Unable to display preview. Download preview PDF.
- 1.Committee H. Metals Handbook, Properties and Selection: Irons, Steels, and High Performance Alloys. Ohio: ASM international, Materials Park, 1990Google Scholar
- 2.Committee H. Metals Handbook, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials. Ohio: ASM international, Materials Park, 1990Google Scholar
- 15.Smith W F. Structure and Properties of Engineering Alloys. New York: McGraw-Hill, 1993Google Scholar
- 28.Wikipedia. Beryllium. Retrieved 22 April 2017. Https://en.wikipedia.org/wiki/Beryllium, 2017Google Scholar
- 29.Deoboer F R, Boom R, Mattens W C, et al. Cohesion in Metals: Transition Metal Alloys. Amsterdam: Elsevier Scientific Publisher, 1988Google Scholar
- 31.Dieter G E, Bacon D J. Mechanical Metallurgy. New York: McGraw- Hill, 1988Google Scholar
- 33.Ashby M F. Materials Selection in Mechanical Design. Burlington: Butterworth-Heinemann, 2011Google Scholar