POST－DEFORMATION TENSILE PROPERTIES IN A RAPIDLY SOLIDIFIED POWDER METALLURGY MR64 ALLOY
(1.Harbin Institute of Technology; Harbin 150001 ; China
2.Instdute of Metal Research; Acatlentia Sinica; Shenyang 110006 ; China)
2.Instdute of Metal Research; Acatlentia Sinica; Shenyang 110006 ; China)
Abstract: A superplastic elongation of 260% of rapidly solidified powder metallurgy (PM) MR64 al-loy can be obtuined at the strain rate of 8. 33 × 10-3 s-1 and the temperature of 490 ℃. The re-lationship between mechanieal properties and cavities, behavior has been demonstrated, and itwas found that the strength and the ductility of the alloy decrease with incrcasing cavityamount.
Key words: MR64 alloy rapid solidification powder metallurgy superplasticity mechani-cal properties cavity