块体非晶合金铸造成形的研究新进展
New Development of Research on Casting of Bulk Amorphous Alloys
(a) suction casting over brass inserts was used to create a cup from a Ti-based BMG
(b) comparing the outer shape of the BMG cup to a machined steel flexspline
(c) the minimum thickness of the cup using suction pressure was 2 mm. The wall was thinned via conventional machining
(d) electrial discharge machining (EDM) was used to machine the teeth in the flexspline resulting in the final shape
(e) attempts were made to cast the teeth of the flexspline using and EDMed mold (inset)
(f) comparison of fully prototyped BMG flexspline with a steel version
(g) an assembled, functioning strain wave gear (SWG) utilizing a BMG flexspline from Fig.8f
(h) DSC traces of three BMG alloys cast into flexsplines. The lower two plots were prototyped using lab-grade material while the other plot is from a commercially cast part
(i) XRD spectra of three BMG alloys cast into flexsplines, showing mostly amorphous microstructure even in fairly large parts
