Due to their relatively light weight and high strength, there is an increasing demand from automobile and aerospace industries for magnesium alloys. Reduced weight of engines, wheels and other components leads to higher performance, lower fuel consumption and reduced emissions. In recent decades, several commercial magnesium alloys have been developed. Some of these are widely used, but still suffer from poor mechanical properties at high temperatures. QE22 and WE43 are available in the market and are designed for elevated temperature applications, however their high costs are a barrier to many applications.
Researchers at The University of Queensland have developed a new series of magnesium alloys with higher strength/density ratio than QE22, but with equivalent stress relaxation values at high temperature (180°C), while the raw material cost is much lower than for QE22 and WE43.
UQ alloys are:
- less expensive than commercial alloys (~25% less than WE43 and ~57% less than QE22 on average).
- lighter than commercial alloys (7% lighter than WE43 and 10% lighter than QE22 on average)