As in other countries,significant achievements in theresearch of cast superalloys for many years have also beenobtained in China.These results are important con
1.IntroductionThe commercial Al-Li alloys are com-plex alloys.Only a little change in chemicalcomposition and heat treatment process willlead to a big effect on
1.IntroductionSince the Nd-Fe-B magnets appearedin 1983,researchers,producers and users ofthe permanent magnetic materials have paidgreat attention to them.Beca