Issue 16/2017 - Shanghai Jiaotong University has developed a super strong nano-ceramic aluminum alloy

Shanghai Jiaotong University has developed a super strong nano-ceramic aluminum alloy The scientific research team led by Wang Haowei, professor of the School of Materials Science and Engineering of Shanghai Jiaotong University, has developed a super-strong nano-ceramic aluminum alloy
, which is expected to drive the fields of aviation, automobiles and high-speed rail into a lighter and more energy-saving new material era
.

It is understood that materials have strength and stiffness, roughly speaking, the former is the ability to resist destruction, the latter is the ability to
resist deformation.
At present, the international traditional method is to first make ceramics into particles or fibers, and then use stirring casting or powder metallurgy to mix aluminum alloys to obtain aluminum matrix composites, which can improve the strength and rigidity of materials, but there will be a series of problems such as difficult processing and forming, poor strength and plasticity and unstable performance, which seriously hinder engineering applications
.

The researchers adopted the "in-situ autogenous technology" to control the autogeneration through melt, and the size of ceramic particles was reduced from tens of microns to nanometers, breaking through the application bottlenecks
such as low plasticity and difficult processing of ceramic aluminum matrix composites.
"Nano-ceramic aluminum alloy 3D printed components can achieve the performance of
forgings.
We are stepping up cooperation to promote the use of this new material
with China's independent intellectual property rights in domestic large aircraft.
Professor Wang Haowei said
.